The circuit
The 51\times203 matrix. Rows are wires and columns are rotations. A 1 means the wire takes part in the rotation, and the number beside each wire is its row weight. Scroll sideways to see every column.
| wire | 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 |
|---|---|
| out 0 (81) | ·11··1··1···11·11···11······1····1111··11··11·····1·1··1···1··1·1··11111·1······1··1···11··11·1·11··1·1·1···1··1·111·11···1·1········1···1111·11·1·1····1·······1···1···1111111··1········1··1···11·11·1·11 |
| out 1 (93) | 1·1··1··1··1···11···111·····1····111··1111·1···1··1·1·11··11111·1··11111·11·····1··1··11····1·11111···1·1··11·11··1··11···1·11·······1···111·11111····1········11·1·11·11111111··11·······1··1··11···1·1111 |
| out 2 (75) | ·111·111··1111········1·········1·111·1111111·1111·1·1111···11············1·········1··1······1·1···1·11111··11··1·1·········1··········1·11111111·1·111·1·11··111···1·1··········1···········1··1·····1·1· |
| out 3 (75) | ·111·111··1111········1··········111·11111··11·111·1·1111···11············1········1··1·····111··1··1·11111··11··1·1·········1···········111·1111··11·11·1·11··111···1·1··········1··········1··1····111··1 |
| out 4 (27) | ······1····111········1··················1····1···········1·11············1················1·····1·······1····1··1·1·········1··················1····1·······1····1··1·1··········1·················1·····1 |
| out 5 (89) | 1·1··1··11·111·11···11······1····111··1111··1··1··1·1··11·11··1·1··11111·1······1··1··11····111·111···1·1···1·11·111·11···1·1········1···111·1111··1··1·········111·1···1111111··1········1··1··11···111·11 |
| out 6 (85) | 11·1··11···1···11···111·····1·······1·11·····1··1111111111·1111·1··11111·11·····1·····1·11······1·1·1··1·11···11··1··11···1·11·······1······111·····1··1·1·11··111··11·11111111··11·······1·····1·11·····1· |
| out 7 (83) | 1111·1111·11·1·····1·1·1····1···1111··1·1··1··1·11·1·11·1····1·········1·1······1·····11·1·11·111·1·1·11111·111····1·····1··1·1······1··1111·1·1·1···1·1·1·11··1·1·····1······1··1·1······1·····11·111·111· |
| out 8 (51) | 1··1····1··111········1·········1···1·11····11·1·······1··1·11············1········1··1·11·····11·1····1····1·1··1·1·········1··········1···111····11·1···1·····1·1··1·1··········1··········1··1·11····11· |
| out 9 (75) | 1111·1111·11·1·····1··········1·11111···11····1·11·1·11·1····1·········1·········1·····111··11111·1·1·11111·111····1·····1··············11111··11····1·1·1·11··1·1·····1······1·············1····111·11111· |
| out 10 (91) | ·11····1··1111··1···11·1··1·11·1··1·1·1111··11·1···1···1··1111111···1·1····1·1·11··1·····1·11·11····1·1···1··11··111·11···1·1·1···1··111··1·11111··11·1····1····1·1·11·111·1·1······1·1··11··1·····111·11·· |
| out 11 (73) | ··1··1··1··1···11··11·············111·1·1··1······1·1··1··1111··1··1111············11··1·1·11·1111····1·1···1·11··1·111··11···············1111·1·1··············1·1·11·1·11111···············11··1·111·1111 |
| out 12 (75) | ·111·1111·1······1·1·1············11····11·1·1·111·1·11·1·1·········1··1·1·········11·1111··1·11·1··1·11111·11···········1··1·············11···111··1·11·1·11··1·11········1··1··1···········11·1111·1·11·1 |
| out 13 (31) | ································1·1·1·1··1·11·1····································1·11·1··1·1·1·1······································1·1·11··11·1·1·······································1··1·1·1·1·1·1 |
| out 14 (87) | 1111·1111·11·1·····1·11·····1·····11···11··1··1·11·1·11·1····1·········1·111····1··11·111··11·111·1·1·11111·111····1·····1··11·1·····1····11··11·1···1·1·1·11··1·1·····1······1··11·1·····1··11·111·11·111· |
| out 15 (93) | ·1·1··11··1····11···111·····1···11··1·11······11·11111111·11111·1··11111·11·····1··11·1·11·······1·11··1·11··1·1··1··11···1·11·······1··11··111······11··1·11··1111·11·11111111··11·······1··11·1·11······1 |
| out 16 (55) | 1·······1···1······1········1···1···1·1··1·11111·······1····1··········11·······1··1··1·1··1·1·1111·········1····1·······1·1·········1··1···11··11·1111·········1····1········1·1·········1··1··1·1·1·1·111 |
| out 17 (47) | 1·······1··1····················11··1·1··1·1·111·1·····1··1························11·1·1··1·1··111··1······1·1·························11··11··11··111··1······1·1··························11·1·1·1·1··11 |
| out 18 (43) | ·····················11·1·······11····11·1·11·1··························11··1·····11···11·1·1·1·1··························11··········11···11·11·1·1···························11···1······11···111·1·1·1 |
| out 19 (27) | ······················1····11····1·····1·1····1···························1·····1···1····1·1·····1···························1·····1·1···1····1·1····1····························1·····1·1···1····11·····1 |
| out 20 (79) | 1111·1111·11·1·····1··1··1······1·111··111·11·1·11·1·11·1····1·········1··1·········1··11···1·1·1·1·1·11111·111····1·····1···1···1······1·111·1111·1·1·1·1·11··1·1·····1······1···1····1······1··11··1·1·1· |
| out 21 (97) | 1·11··1·1··111·1·····111··1··1·1111···1111·111·1111·1·111··········1·1·1··11·1·1····1·1··1·11111··1···11·1··1·11·111·1······111···1···11111··11111·11·11·1·····111····1···1·1·1···1·1·1··1····1·1··111111·· |
| out 22 (99) | ·1·1·111··1·····1··111······1···11··1·11···11·111111·1111·11111·11·1111··1······1··11·1·11···1·1·1··1··1111··1·1··1··11··11·1········1··11··111··1·1·111·1·11··1111·11·1111111···1········1··11·1·11··1·1·1 |
| out 23 (27) | 1···1·······11········1·········1·····1········1···1········11············1········1····1·········1··············1·1·········1··········1····1········1····1·········1·1··········1··········1····1········ |
| out 24 (75) | ·111·1111·1·1·1······1··········1·111·111··11·1111·1·11·1·1·1···1········1··········1··1···11·1·1···1·11111·11···1··········1···········1·111111·1·1·111·1·11··1·11··1···1·······1············1··1··11·1·1· |
| out 25 (43) | ·······11···11········1·········11····11···11··········1····11············1········11···11···1·1··········1·1····1·1·········1··········11···11··1·1··········1·1····1·1··········1··········11···11··1·1·· |
| out 26 (77) | ·1·1··11··111··11·1·11··········1···1·11·······1111111111··1·11·1··11·11·1·········1··1·11··········1··1·11··111·11··11···1·1···········1···111·······11·1·11··111··1··11111·11··1···········1··1·11······· |
| out 27 (75) | ·111·1111·1··1·······1···········1111···11·····111·1·11·1·11·1···········1·········1···111··111111··1·11111·11··1··1········1············1111··11·····11·1·11··1·11·1··1·········1···········1···111·111111 |
| out 28 (85) | ·1·1··11··11·1·11···11··········11··1·1··1····11111111111··11·1·1···1111·1·········11·1·1··1·····1··1··1·11··111··11·111··1·1···········11··11··1····111·1·11··111··11··11·1111··1···········11·1·1·1·····1 |
| out 29 (87) | ·111·111··1111·······11···1·1·····11····1·····1111·1·1111···11···········11···1·1··11·1111·111111···1·11111··11··1·1········11····1··1····11···1·····111·1·11··111···1·1·········11·······1··11·1111111111· |
| out 30 (83) | ·111·1111·1·11·····1·1··········1·11··1·1··1·11111·1·11·1·1·11········11·1··········1·11·1·11·11····1·11111·11···1·1····11··1···········1·11·1·1·1··1111·1·11··1·11··1·1·····11··1············1·11·111·11·· |
| out 31 (49) | ··1·····1···11·····1········1·········1··1·1111···1····1····11·········1········1·······1··1·1·111····1·····1··1·1·1·····1···········1·······1··11·111··········1··1·1·1······1···········1·······1·1·1·111 |
| out 32 (83) | ·111·111··1111·······1······1··11·11··1·1··11·1111·1·1111···11···········1······1·1·1·11·1·11·1·1···1·11111··11··1·1········1········1·11·11·1·1·1·1·111·1·11··111···1·1·········1········1···1·11·111·1·1· |
| out 33 (75) | ·111·111··1111········1···········1···1·1··1·11111·1·1111···11············1········11·11·1·11·11····1·11111··11··1·1·········1············1··1·1·1··1111·1·11··111···1·1··········1··········11111·111·11·· |
| out 34 (75) | ·111·111··1111········1··········1111···11····1111·1·1111···11············1········1···111··11·11···1·11111··11··1·1·········1···········1111··11·1··111·1·11··111···1·1··········1··········1···111·11·11· |
| out 35 (83) | 1111·1111·11·1·····1·11······1····11··1·1··1·1··11·1·11·1····1·········1·11········11·11·1·11·11·11·1·11111·111····1·····1··11········1···11·1·1·1··1··1·1·11··1·1·····1······1··11········1·11·11·111·11·1 |
| out 36 (85) | ·1·1··111·1·1··11·····1··········1·····1·1·11·111111111·1·11·11·1··11111··1·········1····1·1·1·1·1··1··1·11·11·1·11··11······1···········1····1·11·1·111·1·11··1·11·1··111111111··1···········1····11·1·1·1 |
| out 37 (31) | ································11····1111···11····································11···1111····11······································11···1111···11·······································11···111····11 |
| out 38 (85) | ·1·1··111·1··1·1····1·1·········11····11·1····111111111·1·111·1·1·111111··1········11···11·1·····1··1··1·11·11·1··11·1····1··1··········11···11·1····111·1·11··1·11·11··1111111···1··········11···111·····1 |
| out 39 (79) | 1111·1111·11·1·····1·1··········1·11····11·1·11·11·1·11·1····1·········1·1·····1····1·1111··1·11··1·1·11111·111····1·····1··1·······1···1·11···111··11·1·1·11··1·1·····1······1··1·······1····1·1111·1·11·· |
| out 40 (43) | 1·······1···1······1··1·····1···1···1·1······1·1·······1····1··········1··1·1···1··1··1·1·······1·1·········1····1·······1···1··1····1··1···11······1·1·········1····1········1···1··1····1··1··1·1······1· |
| check 41 (82) | ·1···1·11·1111·····11··1···1···11111··11····11···1·1··11·····1··1··11·····1·11·1·1·11·······11·1·1··1···1·1·111··111·1···11···1····1···11111·11····11····1·1···11······1·111······1··11··1··111······11·1·1 |
| check 42 (80) | 1111···11···1··1····11···1·1·1·1··1···1·1··11·1···1·11·11·1···1·1··1··1·1111·1·····1···111··11····1·1·11··1·1··1·1········1·1····1·1··11··1··1·1·1·1·1······1···111·····111··1··111·1·1······1···111·11···· |
| check 43 (94) | 1····1111·1·11·11··1111··11111·1····1·1·1···1111····111·1·1·11·····1111··11····1·1····1·1··1111···1·····111·11···1·1··1··11·11···111·111····11·1···1111·····1··1·11··1·1··1111···11······1··1···1·1·1111··· |
| check 44 (124) | 11·11·1111··1·11111···1111·1·11·111··1··1·11111·111·111··11·1···111·11··11·11·111·1111·1··1·11·111·1·11·1··1·1111·1111·111111··11·1·11·1···1111·1·1···1·1·11·11·11·11·111·1··111··11··111··11··11·111··1··· |
| check 45 (98) | 11·1·111·11···11·1·111··1·1····11····111·1··1···1111·111··11111···11·11··1···11···11···111·1···1··1111····11·1111···111·11····11····1·1·11·1·1···1···1····1111··11···111·1111··1···11····1·1·111··1···1···1 |
| check 46 (100) | ·1··1··11···1111·1·····11·1·111·1111··11·11····1··1··1···1·····11··111·1·1·1···11111·1·11···11·1·1···1··1··11111··11·1·1·11··1··1·11111111······11··111·11·11·11··1··11·····1··1·111111·1·1··1·1·1·1····11· |
| check 47 (92) | ·1··11·111····1·1·1·1···11·11·11·1·1·111·1·11111··1·11··11·1··11····111·1·1·11····1·····1·······1···1·11··1··11···111·1·11·····111·1··1··1·11···111···1···111···1·1·1··1·1·1··111·1·1·····111···11·1···11·1 |
| check 48 (94) | ··11··1··111·1··1111···1·····11·1·1·······1·111·111·1·1··1··1··1·1111····1·1·111·11···1·1·1···11·1····11··111··1···1···11·1···1··11111·11·1····1111····1·1··111·111··1······1111·1··1·111·11····1·1·111··1· |
| check 49 (108) | 1·11··1·1··11·1·111··111··1··1·111···1····11·1·1111·1·111····1·111111··1··11·1·1····11111·1··11···1···11·1··1·1·1·1111·1111·111···1···11··1111111·11·111·1·····111·1111·1···11·1··1·1·1··1···1·1···111··111 |
| check 50 (102) | ·111·111··1111·······11111·1·11·111·11·11·1··11111·1·1111···11··········1··11·111·111111·11·1···11··1·11111··11··1·1·······1···11·1·11·1···1·1··1111··11·1·11··111···1·1·········111··111··11··1··1·1·111·· |
The gate is read off the output rows. An output row of odd weight gives a T, a pair of output rows with odd overlap gives a CS, and an odd triple overlap gives a CCZ. The circuit is a valid factory because every such parity that touches a check row is even.
Figures of merit
Output gate
As gates: \mathrm{T}_{0}\cdot \mathrm{T}_{1}\cdot \mathrm{T}_{2}\cdot \mathrm{T}_{3}\cdot \mathrm{T}_{4}\cdot \mathrm{T}_{5}\cdot \mathrm{T}_{6}\cdot \mathrm{T}_{7}\cdot \mathrm{T}_{8}\cdot \mathrm{T}_{9}\cdot \mathrm{T}_{10}\cdot \mathrm{T}_{11}\cdot \mathrm{T}_{12}\cdot \mathrm{T}_{13}\cdot \mathrm{T}_{14}\cdot \mathrm{T}_{15}\cdot \mathrm{T}_{16}\cdot \mathrm{T}_{17}\cdot \mathrm{T}_{18}\cdot \mathrm{T}_{19}\cdot \mathrm{T}_{20}\cdot \mathrm{T}_{21}\cdot \mathrm{T}_{22}\cdot \mathrm{T}_{23}\cdot \mathrm{T}_{24}\cdot \mathrm{T}_{25}\cdot \mathrm{T}_{26}\cdot \mathrm{T}_{27}\cdot \mathrm{T}_{28}\cdot \mathrm{T}_{29}\cdot \mathrm{T}_{30}\cdot \mathrm{T}_{31}\cdot \mathrm{T}_{32}\cdot \mathrm{T}_{33}\cdot \mathrm{T}_{34}\cdot \mathrm{T}_{35}\cdot \mathrm{T}_{36}\cdot \mathrm{T}_{37}\cdot \mathrm{T}_{38}\cdot \mathrm{T}_{39}\cdot \mathrm{T}_{40}
As monomials: 0+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40 (output wires per term, separated by +)
This row stands for every gate that a CNOT circuit and S, Z and CZ gates on the outputs can reach from this one. They all prepare the same magic state. The wires are shown in the S_k-canonical frame.
Clifford correction
With every rotation a \mathrm{T}=\mathrm{diag}(1,e^{i\pi/4}), the rotations deposit the gate above times a diagonal Clifford. Undo it after the rotations and before the checks are measured, with 45 single-wire gates and 221 \mathrm{CZ} gates: \mathrm{Z} on output 1, \mathrm{S}^\dagger on output 2, \mathrm{S}^\dagger on output 3, \mathrm{S}^\dagger on output 4, \mathrm{Z} on output 6, \mathrm{S}^\dagger on output 7, \mathrm{S}^\dagger on output 8, \mathrm{S}^\dagger on output 9, \mathrm{S}^\dagger on output 10, \mathrm{S}^\dagger on output 12, \mathrm{S} on output 13, \mathrm{S} on output 14, \mathrm{Z} on output 15, \mathrm{S} on output 16, \mathrm{S} on output 17, \mathrm{S}^\dagger on output 18, \mathrm{S}^\dagger on output 19, \mathrm{S} on output 20, \mathrm{S}^\dagger on output 22, \mathrm{S}^\dagger on output 23, \mathrm{S}^\dagger on output 24, \mathrm{S}^\dagger on output 25, \mathrm{Z} on output 26, \mathrm{S}^\dagger on output 27 and 242 more (listed below). The circuit's action is then exactly the gate above, and an error-free run passes every check with certainty.
All 266 correction gates
\mathrm{Z} on output 1, \mathrm{S}^\dagger on output 2, \mathrm{S}^\dagger on output 3, \mathrm{S}^\dagger on output 4, \mathrm{Z} on output 6, \mathrm{S}^\dagger on output 7, \mathrm{S}^\dagger on output 8, \mathrm{S}^\dagger on output 9, \mathrm{S}^\dagger on output 10, \mathrm{S}^\dagger on output 12, \mathrm{S} on output 13, \mathrm{S} on output 14, \mathrm{Z} on output 15, \mathrm{S} on output 16, \mathrm{S} on output 17, \mathrm{S}^\dagger on output 18, \mathrm{S}^\dagger on output 19, \mathrm{S} on output 20, \mathrm{S}^\dagger on output 22, \mathrm{S}^\dagger on output 23, \mathrm{S}^\dagger on output 24, \mathrm{S}^\dagger on output 25, \mathrm{Z} on output 26, \mathrm{S}^\dagger on output 27, \mathrm{Z} on output 28, \mathrm{S} on output 29, \mathrm{S}^\dagger on output 30, \mathrm{S}^\dagger on output 32, \mathrm{S}^\dagger on output 33, \mathrm{S}^\dagger on output 34, \mathrm{S}^\dagger on output 35, \mathrm{Z} on output 36, \mathrm{S} on output 37, \mathrm{Z} on output 38, \mathrm{S} on output 39, \mathrm{S}^\dagger on output 40, \mathrm{S}^\dagger on check 41, \mathrm{S} on check 43, \mathrm{Z} on check 44, \mathrm{S}^\dagger on check 45, \mathrm{Z} on check 46, \mathrm{Z} on check 47, \mathrm{S} on check 48, \mathrm{Z} on check 49, \mathrm{S} on check 50, \mathrm{CZ} on output 0, output 1, \mathrm{CZ} on output 0, output 5, \mathrm{CZ} on output 0, output 6, \mathrm{CZ} on output 0, output 10, \mathrm{CZ} on output 0, output 11, \mathrm{CZ} on output 0, output 15, \mathrm{CZ} on output 0, output 21, \mathrm{CZ} on output 0, output 26, \mathrm{CZ} on output 0, output 28, \mathrm{CZ} on output 0, output 31, \mathrm{CZ} on output 0, output 36, \mathrm{CZ} on output 0, output 38, \mathrm{CZ} on output 0, check 41, \mathrm{CZ} on output 0, check 43, \mathrm{CZ} on output 0, check 45, \mathrm{CZ} on output 0, check 47, \mathrm{CZ} on output 1, output 5, \mathrm{CZ} on output 1, output 6, \mathrm{CZ} on output 1, output 10, \mathrm{CZ} on output 1, output 11, \mathrm{CZ} on output 1, output 15, \mathrm{CZ} on output 1, output 21, \mathrm{CZ} on output 1, output 26, \mathrm{CZ} on output 1, output 28, \mathrm{CZ} on output 1, output 31, \mathrm{CZ} on output 1, output 36, \mathrm{CZ} on output 1, output 38, \mathrm{CZ} on output 1, check 41, \mathrm{CZ} on output 1, check 43, \mathrm{CZ} on output 1, check 44, \mathrm{CZ} on output 1, check 45, \mathrm{CZ} on output 1, check 50, \mathrm{CZ} on output 2, check 44, \mathrm{CZ} on output 2, check 47, \mathrm{CZ} on output 2, check 50, \mathrm{CZ} on output 3, check 44, \mathrm{CZ} on output 3, check 47, \mathrm{CZ} on output 3, check 50, \mathrm{CZ} on output 4, check 44, \mathrm{CZ} on output 4, check 47, \mathrm{CZ} on output 4, check 50, \mathrm{CZ} on output 5, output 6, \mathrm{CZ} on output 5, output 10, \mathrm{CZ} on output 5, output 11, \mathrm{CZ} on output 5, output 15, \mathrm{CZ} on output 5, output 21, \mathrm{CZ} on output 5, output 26, \mathrm{CZ} on output 5, output 28, \mathrm{CZ} on output 5, output 31, \mathrm{CZ} on output 5, output 36, \mathrm{CZ} on output 5, output 38, \mathrm{CZ} on output 5, check 41, \mathrm{CZ} on output 5, check 43, \mathrm{CZ} on output 5, check 45, \mathrm{CZ} on output 5, check 47, \mathrm{CZ} on output 6, output 10, \mathrm{CZ} on output 6, output 11, \mathrm{CZ} on output 6, output 15, \mathrm{CZ} on output 6, output 21, \mathrm{CZ} on output 6, output 26, \mathrm{CZ} on output 6, output 28, \mathrm{CZ} on output 6, output 31, \mathrm{CZ} on output 6, output 36, \mathrm{CZ} on output 6, output 38, \mathrm{CZ} on output 6, check 41, \mathrm{CZ} on output 6, check 43, \mathrm{CZ} on output 6, check 44, \mathrm{CZ} on output 6, check 45, \mathrm{CZ} on output 6, check 50, \mathrm{CZ} on output 7, check 44, \mathrm{CZ} on output 7, check 47, \mathrm{CZ} on output 7, check 50, \mathrm{CZ} on output 8, check 44, \mathrm{CZ} on output 8, check 47, \mathrm{CZ} on output 8, check 50, \mathrm{CZ} on output 9, check 44, \mathrm{CZ} on output 9, check 47, \mathrm{CZ} on output 9, check 50, \mathrm{CZ} on output 10, output 11, \mathrm{CZ} on output 10, output 15, \mathrm{CZ} on output 10, output 21, \mathrm{CZ} on output 10, output 22, \mathrm{CZ} on output 10, output 26, \mathrm{CZ} on output 10, output 28, \mathrm{CZ} on output 10, output 36, \mathrm{CZ} on output 10, output 38, \mathrm{CZ} on output 10, check 41, \mathrm{CZ} on output 10, check 44, \mathrm{CZ} on output 10, check 45, \mathrm{CZ} on output 10, check 47, \mathrm{CZ} on output 10, check 48, \mathrm{CZ} on output 11, output 15, \mathrm{CZ} on output 11, output 21, \mathrm{CZ} on output 11, output 26, \mathrm{CZ} on output 11, output 28, \mathrm{CZ} on output 11, output 31, \mathrm{CZ} on output 11, output 36, \mathrm{CZ} on output 11, output 38, \mathrm{CZ} on output 11, check 41, \mathrm{CZ} on output 11, check 43, \mathrm{CZ} on output 11, check 45, \mathrm{CZ} on output 11, check 47, \mathrm{CZ} on output 12, check 44, \mathrm{CZ} on output 12, check 47, \mathrm{CZ} on output 12, check 50, \mathrm{CZ} on output 15, output 21, \mathrm{CZ} on output 15, output 26, \mathrm{CZ} on output 15, output 28, \mathrm{CZ} on output 15, output 31, \mathrm{CZ} on output 15, output 36, \mathrm{CZ} on output 15, output 38, \mathrm{CZ} on output 15, check 41, \mathrm{CZ} on output 15, check 43, \mathrm{CZ} on output 15, check 44, \mathrm{CZ} on output 15, check 45, \mathrm{CZ} on output 15, check 50, \mathrm{CZ} on output 18, check 44, \mathrm{CZ} on output 18, check 47, \mathrm{CZ} on output 18, check 50, \mathrm{CZ} on output 19, check 44, \mathrm{CZ} on output 19, check 47, \mathrm{CZ} on output 19, check 50, \mathrm{CZ} on output 21, output 26, \mathrm{CZ} on output 21, output 28, \mathrm{CZ} on output 21, output 31, \mathrm{CZ} on output 21, output 36, \mathrm{CZ} on output 21, output 38, \mathrm{CZ} on output 21, check 41, \mathrm{CZ} on output 21, check 43, \mathrm{CZ} on output 21, check 45, \mathrm{CZ} on output 21, check 47, \mathrm{CZ} on output 22, output 31, \mathrm{CZ} on output 22, check 41, \mathrm{CZ} on output 22, check 42, \mathrm{CZ} on output 22, check 46, \mathrm{CZ} on output 22, check 47, \mathrm{CZ} on output 22, check 48, \mathrm{CZ} on output 22, check 49, \mathrm{CZ} on output 23, check 44, \mathrm{CZ} on output 23, check 47, \mathrm{CZ} on output 23, check 50, \mathrm{CZ} on output 24, check 44, \mathrm{CZ} on output 24, check 47, \mathrm{CZ} on output 24, check 50, \mathrm{CZ} on output 25, check 44, \mathrm{CZ} on output 25, check 47, \mathrm{CZ} on output 25, check 50, \mathrm{CZ} on output 26, output 28, \mathrm{CZ} on output 26, output 31, \mathrm{CZ} on output 26, output 36, \mathrm{CZ} on output 26, output 38, \mathrm{CZ} on output 26, check 41, \mathrm{CZ} on output 26, check 43, \mathrm{CZ} on output 26, check 44, \mathrm{CZ} on output 26, check 45, \mathrm{CZ} on output 26, check 50, \mathrm{CZ} on output 27, check 44, \mathrm{CZ} on output 27, check 47, \mathrm{CZ} on output 27, check 50, \mathrm{CZ} on output 28, output 31, \mathrm{CZ} on output 28, output 36, \mathrm{CZ} on output 28, output 38, \mathrm{CZ} on output 28, check 41, \mathrm{CZ} on output 28, check 43, \mathrm{CZ} on output 28, check 44, \mathrm{CZ} on output 28, check 45, \mathrm{CZ} on output 28, check 50, \mathrm{CZ} on output 30, check 44, \mathrm{CZ} on output 30, check 47, \mathrm{CZ} on output 30, check 50, \mathrm{CZ} on output 31, output 36, \mathrm{CZ} on output 31, output 38, \mathrm{CZ} on output 31, check 42, \mathrm{CZ} on output 31, check 44, \mathrm{CZ} on output 31, check 45, \mathrm{CZ} on output 31, check 46, \mathrm{CZ} on output 31, check 47, \mathrm{CZ} on output 31, check 48, \mathrm{CZ} on output 31, check 49, \mathrm{CZ} on output 31, check 50, \mathrm{CZ} on output 32, check 44, \mathrm{CZ} on output 32, check 47, \mathrm{CZ} on output 32, check 50, \mathrm{CZ} on output 33, check 44, \mathrm{CZ} on output 33, check 47, \mathrm{CZ} on output 33, check 50, \mathrm{CZ} on output 34, check 44, \mathrm{CZ} on output 34, check 47, \mathrm{CZ} on output 34, check 50, \mathrm{CZ} on output 35, check 44, \mathrm{CZ} on output 35, check 47, \mathrm{CZ} on output 35, check 50, \mathrm{CZ} on output 36, output 38, \mathrm{CZ} on output 36, check 41, \mathrm{CZ} on output 36, check 43, \mathrm{CZ} on output 36, check 44, \mathrm{CZ} on output 36, check 45, \mathrm{CZ} on output 36, check 50, \mathrm{CZ} on output 38, check 41, \mathrm{CZ} on output 38, check 43, \mathrm{CZ} on output 38, check 44, \mathrm{CZ} on output 38, check 45, \mathrm{CZ} on output 38, check 50, \mathrm{CZ} on output 40, check 44, \mathrm{CZ} on output 40, check 47, \mathrm{CZ} on output 40, check 50, \mathrm{CZ} on check 41, check 44, \mathrm{CZ} on check 41, check 45, \mathrm{CZ} on check 41, check 50, \mathrm{CZ} on check 42, check 43, \mathrm{CZ} on check 42, check 44, \mathrm{CZ} on check 42, check 47, \mathrm{CZ} on check 42, check 50, \mathrm{CZ} on check 43, check 45, \mathrm{CZ} on check 43, check 46, \mathrm{CZ} on check 43, check 48, \mathrm{CZ} on check 43, check 49, \mathrm{CZ} on check 45, check 47, \mathrm{CZ} on check 47, check 48, \mathrm{CZ} on check 47, check 50, \mathrm{CZ} on check 48, check 50
Or no Clifford gate at all: run \mathrm{T}^3 on rotations 2, 6, 10, 11, 17, 18, 25, 37, 39, 40, 48, 52, 53, 60, 61, 62, 64, 65, 69, 70, 71, 72, 73, 75 and 69 more (listed below); \mathrm{T}^5 on rotations 1, 9, 12, 19, 20, 23, 27, 28, 32, 34, 47, 100, 105; \mathrm{T}^\dagger on rotations 3, 4, 13, 15, 21, 22, 29, 33, 41, 50, 59, 98, and \mathrm{T} on the rest. A power of \mathrm{T} costs one magic state, like \mathrm{T} itself. For a code this is a transversal \mathrm{T} gate, \mathrm{T}^j on each qubit.
All 93 rotations at T³
2, 6, 10, 11, 17, 18, 25, 37, 39, 40, 48, 52, 53, 60, 61, 62, 64, 65, 69, 70, 71, 72, 73, 75, 77, 81, 82, 84, 85, 87, 88, 90, 91, 92, 93, 94, 96, 97, 99, 103, 104, 106, 107, 110, 112, 114, 116, 117, 118, 121, 124, 125, 126, 127, 128, 129, 130, 131, 132, 136, 137, 139, 140, 143, 146, 147, 148, 150, 151, 152, 153, 154, 156, 161, 164, 165, 168, 170, 172, 175, 177, 180, 183, 189, 190, 192, 193, 194, 195, 198, 199, 200, 202
Rotations are numbered by matrix column, from 0. The correction comes from the columns by the weight expansion of Bravyi and Haah (2012). verify_catalog.py re-derives it, checks the corrected circuit's phase input by input against the gate, and on small circuits simulates it gate by gate.
Convert the output with CNOT and S
A CNOT circuit on the outputs, followed by S, Z and CZ gates, turns this factory's gate into other gates that prepare the same magic state. Type a target gate to check whether it is reachable. If it is, you get the circuit, checked on every basis state.
Or list every gate it reaches. The list is built in your browser and saved as a text file, one gate per line.
Python code that writes the same list
import json, urllib.request
NAMES = {1: "T", 2: "CS", 3: "CCZ"}
def equivalent_gates(k, terms, limit=1_000_000):
"""Every gate a CNOT circuit and S, Z, CZ gates reach from this one.
A gate is its set of terms mod Clifford: {a} is T, {a,b} is CS and
{a,b,c} is CCZ on those outputs. CNOT c->t sends x_t to
x_c + x_t - 2 x_c x_t, so a term on t but not c adds the term with t
replaced by c, and, below CCZ, the term with c added.
"""
start = frozenset(frozenset(m) for m in terms)
seen, queue = {start}, [start]
for gate in queue:
for c in range(k):
for t in range(k):
if c == t:
continue
new = set(gate)
for m in gate:
if t in m and c not in m:
new ^= {(m - {t}) | {c}}
if len(m) < 3:
new ^= {m | {c}}
new = frozenset(new)
if new not in seen:
seen.add(new)
queue.append(new)
if len(seen) > limit:
raise RuntimeError(f"more than {limit} equivalent gates")
return seen
def name(gate, k):
sep = "," if k > 10 else ""
terms = sorted((sorted(m) for m in gate), key=lambda m: (len(m), m))
return "·".join(NAMES[len(m)] + sep.join(map(str, m)) for m in terms) or "I"
url = "https://shubhamj810.github.io/magic-state-factory-repo/data/factories/203.41.3.a.json"
record = json.load(urllib.request.urlopen(url))
k = record["parameters"]["k"]
gates = equivalent_gates(k, record["gate"]["monomials"])
lines = sorted(name(g, k) for g in gates)
print(len(lines), "equivalent gates")
with open("equivalent-gates-203.41.3.a.txt", "w") as out:
out.write("\n".join(lines) + "\n")
Distance
d=3, exact. No fault of weight below 3 is both undetectable and damaging. One of weight 3 is.
Exactly 1,339 faults of weight 3 are undetectable and damaging, so A_{3}=1{,}339. If each rotation fails independently with probability p, an accepted run has a damaged output with probability A_{3}\,p^{3}+O(p^{4}).
A damaging fault of weight 3 sits on columns [0,2,60].
A fault is a set of faulty columns. It is undetectable when their check parts cancel, and damaging when their output parts do not.
Original source
S. P. Jain, A. Wills, and S. Singh, "Symmetry and AI-assisted discovery of magic-state factories," arXiv:2610.06535 (2026). arxiv.org/abs/2610.06535
Provenance
built from one of Wills's parent codes (weighted Reed-Muller, restricted-light or one-heavy) by searched punctures, paired-column contractions or logical-pair checks, in the pure-T distillation-exponent release (gamma = log(n/k)/log d, n < 1000); a verified witness, not a maximum -- only the release's own frontier points are the lowest gamma it knows
Found by: AI search (gamma frontier): from Wills parent codes
Discovery: AI search
1 recorded source
[
{
"regime": "AI search (gamma frontier): from Wills parent codes",
"file": "gamma_frontier_release/protocols/paired_column_contraction_205_41_3_e9df5bc28e07.json",
"label": "paired_column_contraction_205_41_3_e9df5bc28e07",
"N": 51,
"d": 3,
"d_is_exact": true,
"origin": "Wills weighted Reed\u2013Muller parent (weights 1^6,2^2, cutoff 3), with searched graph punctures; 5 paired-column contractions",
"provenance": "gamma frontier release record paired_column_contraction_205_41_3_e9df5bc28e07 (source catalogue id paired_column_contraction_205_41_3_e9df5bc28e07); construction: Wills weighted Reed\u2013Muller parent (weights 1^6,2^2, cutoff 3), with searched graph punctures; 5 paired-column contractions; matrix e9df5bc28e07d55b...; the release states d=3 (exact), gamma=1.4649735207179269 (exact); the release matrix has 205 columns of which 2 are a repeated pair -- equal columns cancel to a diagonal Clifford and deposit nothing, so they are deleted here and this circuit is the reduced one, with 203 injections for the same gate and distance",
"notes": "matrix gamma_frontier_release/matrices/e9df5bc28e07d55b578960ffd6627afe95804edd9610e41e60a862328f7532df.matrix"
}
]Use it in code
Load this factory and re-derive every number from its circuit with the catalogue's own verifier.
# git clone https://github.com/shubhamj810/magic-state-factory-repo
# cd magic-state-factory-repo/master_catalog
import json, urllib.request
import verify_catalog as VC
url = "https://shubhamj810.github.io/magic-state-factory-repo/data/factories/203.41.3.a.json"
record = json.load(urllib.request.urlopen(url))
columns = record["circuit"]["columns"]
k, N = record["parameters"]["k"], record["parameters"]["N"]
facts, problems = VC.derive(columns, k, N) # gate, T-count, degree, ...
distance = VC.measure_distance(columns, k, N) # exhaustive fault search
print(facts["gate_human"], distance["d_exact"] or distance["d_at_least"],
problems or "verified")
Raw record
Show the JSON this page is built from
Source: master_catalog.json, factories[835].