MPS: Support snapshot_density_matrix #948
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merav-aharoni
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atilag,
chriseclectic and
vvilpas
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merav-aharoni
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chriseclectic
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Sep 24, 2020
chriseclectic
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Changelog: New Feature
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@merav-aharoni Since we're having trouble with the CI tests taking so long to run I've merged this, so can you add the release note for this PR to #915 |
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Summary
Added support for
snapshot_density_matrixin the MPS simulator.Details and comments
This involved change in the
density_matrix_internalfunction, because it previously did not support reordering of the qubits.This also required a change in expectation_value that depends on
density_matrix: We no longer require reordering of the qubits here, because this is now implemented indensity_matrix.