hadamard

Post-processing for hadamard test

purity_echo_core

Post Processing - Hadamard Test - Purity/Echo (qurry.process.hadamard_test.purity_echo_core)

qurry.process.hadamard_test.purity_echo_core.purity_echo_core(shots: int, counts: list[dict[str, int]], backend: Literal['Cython', 'Rust', 'Python'] | str = 'Rust') → float[source]

Calculate entangled entropy with more information combined. The entropy we compute is the Second Order Rényi Entropy.

Parameters:

  • shots (int) – Shots of the experiment on quantum machine.

  • counts (list[dict[str, int]]) – Counts of the experiment on quantum machine.

Raises:

  • Warning – Expected ‘0’ and ‘1’, but there is no such keys

  • ValueError – The length of counts is not 1.

  • ValueError – shots does not match sample_shots.

Returns:

Quantity of the experiment.

Return type:

dict[str, float]

qurry.process.hadamard_test.purity_echo_core.purity_echo_core_allrust(shots: int, counts: list[dict[str, int]]) → float[source]

The core function of entangled entropy by Rust.

Parameters:

  • shots (int) – Shots of the experiment on quantum machine.

  • counts (list[dict[str, int]]) – Counts of the experiment on quantum machine.

Raises:

  • ValueError – Get degree neither ‘int’ nor ‘tuple[int, int]’.

  • ValueError – Measure range does not contain subsystem.

Returns:

Purity or Echo of the experiment.

Return type:

float

wavefunction_overlap

Post Processing - Hadamard Test - Wavefunction Overlap (qurry.process.hadamard_test.wavefunction_overlap)

qurry.process.hadamard_test.wavefunction_overlap.hadamard_overlap_echo(shots: int, counts: list[dict[str, int]], backend: Literal['Cython', 'Rust', 'Python'] | str = 'Rust', pbar: tqdm | None = None) → dict[str, float][source]

Calculate overlap echo with more information combined. The echo we compute is the Loschmidt Echo.

Parameters:

  • shots (int) – Shots of the experiment on quantum machine.

  • counts (list[dict[str, int]]) – Counts of the experiment on quantum machine.

  • backend (PostProcessingBackendLabel, optional) – Backend of the postprocessing. Defaults to DEFAULT_PROCESS_BACKEND.

  • pbar (Optional[tqdm.tqdm], optional) – Progress bar. Defaults to None.

Raises:

  • ValueError – Get degree neither ‘int’ nor ‘tuple[int, int]’.

  • ValueError – Measure range does not contain subsystem.

Returns:

Quantity of the experiment.

Return type:

dict[str, float]

entangled_entropy

Post Processing - Hadamard Test - Entangled Entropy (qurry.process.hadamard_test.entangled_entropy)

qurry.process.hadamard_test.entangled_entropy.hadamard_entangled_entropy(shots: int, counts: list[dict[str, int]], backend: Literal['Cython', 'Rust', 'Python'] | str = 'Rust', pbar: tqdm | None = None) → dict[str, float][source]

Calculate entangled entropy with more information combined. The entropy we compute is the Second Order Rényi Entropy.

Parameters:

  • shots (int) – Shots of the experiment on quantum machine.

  • counts (list[dict[str, int]]) – Counts of the experiment on quantum machine.

  • backend (PostProcessingBackendLabel, optional) – Backend of the postprocessing. Defaults to DEFAULT_PROCESS_BACKEND.

  • pbar (Optional[tqdm.tqdm], optional) – Progress bar. Defaults to None.

Raises:

  • ValueError – Get degree neither ‘int’ nor ‘tuple[int, int]’.

  • ValueError – Measure range does not contain subsystem.

Returns:

Quantity of the experiment.

Return type:

dict[str, float]