Document feedback

Question document fragment

When a question document fragment contains a formula, it is displayed as a space.

Submission type

issue

It's a little complicated...

I'd like to ask someone.

PR

Just a small problem.

I can fix it online!

Please select the submission type

Problem type

Specifications and Common Mistakes

- Specifications and Common Mistakes:

- Misspellings or punctuation mistakes,incorrect formulas, abnormal display.

- Incorrect links, empty cells, or wrong formats.

- Chinese characters in English context.

- Minor inconsistencies between the UI and descriptions.

- Low writing fluency that does not affect understanding.

- Incorrect version numbers, including software package names and version numbers on the UI.

Usability

- Usability:

- Incorrect or missing key steps.

- Missing main function descriptions, keyword explanation, necessary prerequisites, or precautions.

- Ambiguous descriptions, unclear reference, or contradictory context.

- Unclear logic, such as missing classifications, items, and steps.

Correctness

- Correctness:

- Technical principles, function descriptions, supported platforms, parameter types, or exceptions inconsistent with that of software implementation.

- Incorrect schematic or architecture diagrams.

- Incorrect commands or command parameters.

- Incorrect code.

- Commands inconsistent with the functions.

- Wrong screenshots.

- Sample code running error, or running results inconsistent with the expectation.

Risk Warnings

- Risk Warnings:

- Lack of risk warnings for operations that may damage the system or important data.

Content Compliance

- Content Compliance:

- Contents that may violate applicable laws and regulations or geo-cultural context-sensitive words and expressions.

- Copyright infringement.

Please select the type of question

Problem description

Describe the bug so that we can quickly locate the problem.

Submit

Document feedback

mindquantum.core.gates.GroupedPauli

class mindquantum.core.gates.GroupedPauli(pauli_string: str)

Multi qubit pauli string gate.

Pauli string gate apply all pauli operator on the quantum state at same time, which is much faster than apply them one by one.

$$U={\otimes }_i{\sigma }_i,\text{where }\sigma \in \{I,X,Y,Z\}$$

Parameters

pauli_string (str) – The pauli string. Each element should be in ['i', 'x', 'y', 'z', 'I', 'X', 'Y', 'Z'].

Examples

>>> import numpy as np
>>> from mindquantum.core.gates import GroupedPauli
>>> from mindquantum.core.circuit import Circuit
>>> circ1 = Circuit([GroupedPauli('XY').on([0, 1])])
>>> circ2 = Circuit().x(0).y(1)
>>> np.allclose(circ1.matrix(), circ2.matrix())
True
>>> np.allclose(circ1.matrix(), circ1[0].matrix())
True

get_cpp_obj()

Construct cpp obj.

matrix(full=False)

Matrix of this gate.

Parameters

full (bool) – Whether to get the full matrix of this gate (the gate should be acted on some qubits). Default: False.

Returns

numpy.ndarray, the matrix of this gate.