Ensure aux_operator eigenvalues are normalized #5496
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As reported on multiple occasions in Qiskit Aqua ([1], [2]), the eigenvalues of the auxiliary operators are not correctly normalized when the QASM backend is used. This commit fixes this short-coming by applying the same normalization to the VQE's eigenstate when obtained from a QASM backend (in which case this is a dictionary) as done by the `CircuitSampler` in its `sample_circuits` function. The case of the statevector backend is unaffected by this change, as it will return the eigenstate as a list. A unittest is added which asserts this behavior. [1]: https://github.com/Qiskit/qiskit-aqua/issues/1460 [2]: qiskit-community/qiskit-aqua#1467 Co-authored-by: Julien Gacon <gaconju@gmail.com>
ikkoham
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Cryoris
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As reported on multiple occasions in Qiskit Aqua ([1], [2]), the eigenvalues of the auxiliary operators are not correctly normalized when the QASM backend is used. This commit fixes this short-coming by applying the same normalization to the VQE's eigenstate when obtained from a QASM backend (in which case this is a dictionary) as done by the `CircuitSampler` in its `sample_circuits` function. The case of the statevector backend is unaffected by this change, as it will return the eigenstate as a list. A unittest is added which asserts this behavior. [1]: https://github.com/Qiskit/qiskit-aqua/issues/1460 [2]: qiskit-community/qiskit-aqua#1467 Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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* 1. params are required in convert method in GradientBased and HessianBased subclasses 2. fix on handling params of type ParameterExpression * Update qiskit/opflow/gradients/gradient.py Co-authored-by: Julien Gacon <gaconju@gmail.com> * passmanager(..., callback=...) parameter removed (#5522) * passmanager callback removal * unused-import * reno * better initial_layout validation (#5526) Co-authored-by: Kevin Krsulich <kevin.krsulich@ibm.com> * 1) unit tests modified to test ParameterVector input for Gradient, NaturalGradient, QFI and Hessian 2) index method added to ParameterVector 3) handling of ParameterVector changed for Hessian to be consistent with list params * Hessian with respect to vector-like params returns matrix, unit test modified accordingly * Add PiecewiseChebyshev arithmetic circuit (#5364) * general polynomial approximation * release notes * fix qubit re-allocation * fix re-calling build * Update qiskit/circuit/library/arithmetic/piecewise_chebyshev.py Co-authored-by: Julien Gacon <gaconju@gmail.com> * Update qiskit/circuit/library/arithmetic/piecewise_chebyshev.py Co-authored-by: Julien Gacon <gaconju@gmail.com> * Update qiskit/circuit/library/arithmetic/piecewise_chebyshev.py Co-authored-by: Julien Gacon <gaconju@gmail.com> * fix indentation lint error * move tests to library module * Add suggestions from code review Co-authored-by: Julien Gacon <gaconju@gmail.com> * Ensure aux_operator eigenvalues are normalized (#5496) As reported on multiple occasions in Qiskit Aqua ([1], [2]), the eigenvalues of the auxiliary operators are not correctly normalized when the QASM backend is used. This commit fixes this short-coming by applying the same normalization to the VQE's eigenstate when obtained from a QASM backend (in which case this is a dictionary) as done by the `CircuitSampler` in its `sample_circuits` function. The case of the statevector backend is unaffected by this change, as it will return the eigenstate as a list. A unittest is added which asserts this behavior. [1]: https://github.com/Qiskit/qiskit-aqua/issues/1460 [2]: qiskit-community/qiskit-aqua#1467 Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> * Hessian with respect to vector-like param returns matrix, unit test modified accordingly Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: Luciano Bello <luciano.bello@ibm.com> Co-authored-by: Kevin Krsulich <kevin.krsulich@ibm.com> Co-authored-by: Almudena Carrera Vazquez <almudenacarreravazquez@hotmail.com> Co-authored-by: Max Rossmannek <oss@zurich.ibm.com> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
ElePT
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Jun 27, 2023
As reported on multiple occasions in Qiskit Aqua ([1], [2]), the eigenvalues of the auxiliary operators are not correctly normalized when the QASM backend is used. This commit fixes this short-coming by applying the same normalization to the VQE's eigenstate when obtained from a QASM backend (in which case this is a dictionary) as done by the `CircuitSampler` in its `sample_circuits` function. The case of the statevector backend is unaffected by this change, as it will return the eigenstate as a list. A unittest is added which asserts this behavior. [1]: https://github.com/Qiskit/qiskit-aqua/issues/1460 [2]: qiskit-community/qiskit-aqua#1467 Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
ElePT
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Jul 17, 2023
As reported on multiple occasions in Qiskit Aqua ([1], [2]), the eigenvalues of the auxiliary operators are not correctly normalized when the QASM backend is used. This commit fixes this short-coming by applying the same normalization to the VQE's eigenstate when obtained from a QASM backend (in which case this is a dictionary) as done by the `CircuitSampler` in its `sample_circuits` function. The case of the statevector backend is unaffected by this change, as it will return the eigenstate as a list. A unittest is added which asserts this behavior. [1]: https://github.com/Qiskit/qiskit-aqua/issues/1460 [2]: qiskit-community/qiskit-aqua#1467 Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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Summary
This migrates qiskit-community/qiskit-aqua#1473 to Terra, now that the Aqua core has been merged.
As reported on multiple occasions in Qiskit Aqua (https://github.com/Qiskit/qiskit-aqua/issues/1460, qiskit-community/qiskit-aqua#1467), the
eigenvalues of the auxiliary operators are not correctly normalized when
the QASM backend is used.
Details and comments
This commit fixes this short-coming by applying the same normalization
to the VQE's eigenstate when obtained from a QASM backend (in which case
this is a dictionary) as done by the
CircuitSamplerin itssample_circuitsfunction.The case of the statevector backend is unaffected by this change, as it
will return the eigenstate as a list.
A unittest is added which asserts this behavior.
Co-authored-by: Julien Gacon gaconju@gmail.com