Multiple Qubits Clifford Gate #4791
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This reverts commit b2d9269.
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@MichaelBroughton Thanks for the reviewing! I think I have addressed most comments but also left a few more to discuss. PTAL. |
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95-martin-orion
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Add initial Clifford Gate with multiple qubits. Compared with SingleQubitCliffordGate, it has fewer functionalities since we cannot enumerate all of them with PauliGates and several special single qubit properties like Bloch rotation no longer exist. Anyway, it provides several basic interactions:
1. It uses Clifford tableau as underlying data representation (different from the state representation).
2. It can be constructed from a tableau or list of operations (`_has_stabilizer_effect_` only). All Clifford gates can be built through \{S, H, CNOT\}, so we can construct any Clifford Gate from the list of operations. We just cannot pre-define it.
3. Decomposing into several basic operations.
4. Get unitary matrix through decomposing (we cannot do this in a reverse way from unitary to Clifford gate :( ).
5. Know how to interact with ActOnCliffordTableauArgs, i.e. it should be able to use with CliffordTableau simulator (Looks like we don't have that in cirq yet? @daxfohl will add that? see quantumlib#4639 and quantumlib#4748.).
This PR is part of efforts for quantumlib#3639. Context: this PR doesn't introduce any new algorithms but the key methods are already implemented in quantumlib#4183 and quantumlib#4096.
CirqBot
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Apr 20, 2022
This PR mainly moved the `SingleQubitCliffordGate` as the derived class of `CliffordGate`. It didn't add any new functionalities or features. The code change looks large but actually not. Because I moved the `SingleQubitCliffordGate` to the place after `CliffordGate` and auto-diff is not that smart enough to tell that. Context #4791. Main change are: 1. Modify the value equality so that SingleQubitCliffordGate can be evaluate equal to the same CliffordGate 2. Moved the module-level initialization common SingleQubitCliffordGate (like X, Y, Z) to the class-level one. 3. Make a few function `SingleQubitCliffordGate` to use `CliffordGate` one.
tonybruguier
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Apr 22, 2022
This PR mainly moved the `SingleQubitCliffordGate` as the derived class of `CliffordGate`. It didn't add any new functionalities or features. The code change looks large but actually not. Because I moved the `SingleQubitCliffordGate` to the place after `CliffordGate` and auto-diff is not that smart enough to tell that. Context quantumlib#4791. Main change are: 1. Modify the value equality so that SingleQubitCliffordGate can be evaluate equal to the same CliffordGate 2. Moved the module-level initialization common SingleQubitCliffordGate (like X, Y, Z) to the class-level one. 3. Make a few function `SingleQubitCliffordGate` to use `CliffordGate` one.
rht
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May 1, 2023
Add initial Clifford Gate with multiple qubits. Compared with SingleQubitCliffordGate, it has fewer functionalities since we cannot enumerate all of them with PauliGates and several special single qubit properties like Bloch rotation no longer exist. Anyway, it provides several basic interactions:
1. It uses Clifford tableau as underlying data representation (different from the state representation).
2. It can be constructed from a tableau or list of operations (`_has_stabilizer_effect_` only). All Clifford gates can be built through \{S, H, CNOT\}, so we can construct any Clifford Gate from the list of operations. We just cannot pre-define it.
3. Decomposing into several basic operations.
4. Get unitary matrix through decomposing (we cannot do this in a reverse way from unitary to Clifford gate :( ).
5. Know how to interact with ActOnCliffordTableauArgs, i.e. it should be able to use with CliffordTableau simulator (Looks like we don't have that in cirq yet? @daxfohl will add that? see quantumlib#4639 and quantumlib#4748.).
This PR is part of efforts for quantumlib#3639. Context: this PR doesn't introduce any new algorithms but the key methods are already implemented in quantumlib#4183 and quantumlib#4096.
rht
pushed a commit
to rht/Cirq
that referenced
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May 1, 2023
This PR mainly moved the `SingleQubitCliffordGate` as the derived class of `CliffordGate`. It didn't add any new functionalities or features. The code change looks large but actually not. Because I moved the `SingleQubitCliffordGate` to the place after `CliffordGate` and auto-diff is not that smart enough to tell that. Context quantumlib#4791. Main change are: 1. Modify the value equality so that SingleQubitCliffordGate can be evaluate equal to the same CliffordGate 2. Moved the module-level initialization common SingleQubitCliffordGate (like X, Y, Z) to the class-level one. 3. Make a few function `SingleQubitCliffordGate` to use `CliffordGate` one.
harry-phasecraft
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Oct 31, 2024
Add initial Clifford Gate with multiple qubits. Compared with SingleQubitCliffordGate, it has fewer functionalities since we cannot enumerate all of them with PauliGates and several special single qubit properties like Bloch rotation no longer exist. Anyway, it provides several basic interactions:
1. It uses Clifford tableau as underlying data representation (different from the state representation).
2. It can be constructed from a tableau or list of operations (`_has_stabilizer_effect_` only). All Clifford gates can be built through \{S, H, CNOT\}, so we can construct any Clifford Gate from the list of operations. We just cannot pre-define it.
3. Decomposing into several basic operations.
4. Get unitary matrix through decomposing (we cannot do this in a reverse way from unitary to Clifford gate :( ).
5. Know how to interact with ActOnCliffordTableauArgs, i.e. it should be able to use with CliffordTableau simulator (Looks like we don't have that in cirq yet? @daxfohl will add that? see quantumlib#4639 and quantumlib#4748.).
This PR is part of efforts for quantumlib#3639. Context: this PR doesn't introduce any new algorithms but the key methods are already implemented in quantumlib#4183 and quantumlib#4096.
harry-phasecraft
pushed a commit
to PhaseCraft/Cirq
that referenced
this pull request
Oct 31, 2024
This PR mainly moved the `SingleQubitCliffordGate` as the derived class of `CliffordGate`. It didn't add any new functionalities or features. The code change looks large but actually not. Because I moved the `SingleQubitCliffordGate` to the place after `CliffordGate` and auto-diff is not that smart enough to tell that. Context quantumlib#4791. Main change are: 1. Modify the value equality so that SingleQubitCliffordGate can be evaluate equal to the same CliffordGate 2. Moved the module-level initialization common SingleQubitCliffordGate (like X, Y, Z) to the class-level one. 3. Make a few function `SingleQubitCliffordGate` to use `CliffordGate` one.
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Add initial Clifford Gate with multiple qubits. Compared with SingleQubitCliffordGate, it has fewer functionalities since we cannot enumerate all of them with PauliGates and several special single qubit properties like Bloch rotation no longer exist. Anyway, it provides several basic interactions:
_has_stabilizer_effect_only). All Clifford gates can be built through {S, H, CNOT}, so we can construct any Clifford Gate from the list of operations. We just cannot pre-define it.This PR is part of efforts for #3639. Context: this PR doesn't introduce any new algorithms but the key methods are already implemented in #4183 and #4096.