49 lines
2.1 KiB
Plaintext
49 lines
2.1 KiB
Plaintext
---
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title: extensions
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description: API reference for qiskit.extensions
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in_page_toc_min_heading_level: 2
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python_api_type: module
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python_api_name: qiskit.extensions
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---
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<span id="module-qiskit.extensions" />
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<span id="qiskit-extensions" />
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<span id="quantum-circuit-extensions-qiskit-extensions" />
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# Quantum Circuit Extensions
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<span id="module-qiskit.extensions" />
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`qiskit.extensions`
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## Unitary Extensions
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| ---------------------------------------------------------------------------------------------------------------------------------- | --------------------- |
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| [`SingleQubitUnitary`](qiskit.extensions.SingleQubitUnitary "qiskit.extensions.SingleQubitUnitary")(unitary\_matrix\[, mode, ...]) | Single-qubit unitary. |
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## Simulator Extensions
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| ----------------------------------------------------------------------------------------------------------------- | ------------------------------- |
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| [`Snapshot`](qiskit.extensions.Snapshot "qiskit.extensions.Snapshot")(label\[, snapshot\_type, num\_qubits, ...]) | Simulator snapshot instruction. |
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## Exceptions
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The additional gates in this module will tend to raise a custom exception when they encounter problems.
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### ExtensionError
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<Class id="qiskit.extensions.ExtensionError" github="https://github.com/qiskit/qiskit/tree/stable/0.45/qiskit/extensions/exceptions.py" signature="qiskit.extensions.ExtensionError(*message)" modifiers="exception">
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Base class for errors raised by extensions module.
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Set the error message.
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<Admonition title="Deprecated since version 0.45.0_pending" type="danger">
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The class `qiskit.extensions.exceptions.ExtensionError` is pending deprecation as of qiskit 0.45.0. It will be marked deprecated in a future release, and then removed no earlier than 3 months after the release date.
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</Admonition>
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</Class>
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