mirror of https://github.com/Qiskit/qiskit.git
26 lines
1.3 KiB
YAML
26 lines
1.3 KiB
YAML
---
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features:
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- |
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The :class:`~.DefaultUnitarySynthesis` transpiler pass now chooses
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one and two-qubit unitary synthesis based on the basis errors, if they
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are reported in the target. In particular, it runs all possible synthesis
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and chooses the cheapest option.
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For a one-qubit decomposition, it can target Pauli basis
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(e.g. RZ-RX-RZ or RZ-RY-RZ), generic unitary basis (e.g. U), and a
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few others.
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For a two-qubit decomposition, it can target any supercontrolled basis
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(e.g. CNOT, iSWAP, B) or multiple controlled basis
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(e.g. CZ, CH, ZZ^.5, ZX^.2, etc.).
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The interface for :class:`~.UnitarySynthesisPlugin` has two new
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optional properties ``supports_gate_lengths_by_qubit`` and
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``supports_gate_errors_by_qubit`` which when set will add the
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fields ``gate_lengths_by_qubit`` and ``gate_errors_by_qubit``
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respectively to the input options to the plugin's ``run()`` method.
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These new fields are an alternative view of the data provided by
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``gate_lengths`` and ``gate_errors`` but instead have the form:
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``{(qubits,): [Gate, length]}`` (where ``Gate`` is the instance
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of :class:`~.Gate` for that definition). This allows plugins to
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reason about working with gates of the same type but but that
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have different parameters set.
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