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Complete the integration of multi-controlled qubit gates

See original GitHub issue

After migrating to Terra from Aqua, the multi-controlled qubit gates are missing tests. Since tests for these gates still exist in Aqua, they could simply be migrated as well. Is there a reason why they have not yet been imported to Terra?

Also, they are not yet gate objects. Once they are, we can also use these to override the control of the Toffoli and rotation gates to return these, more efficient controlled gate versions if the number of control qubits is larger than 1 (related to #3631).

This concerns the following gates:

mct mcrx mcry mcrz rccx rcccx

Plan:

Move the tests for these gates to Terra
Implement the relative-phase Toffoli gates
Implement the multi-controlled U1 gate
Implement the multi-controlled X gate
Implement the multi-controlled rotations
Port the multi-controlled multi-target X gate from Aqua
Port the boolean logic gates from Aqua

Issue Analytics

State:
Created 4 years ago
Comments:5 (5 by maintainers)

Top GitHub Comments

1reaction

kdkcommented, Jan 13, 2020

When the tests are migrated, we should include https://github.com/Qiskit/qiskit-aqua/blob/master/qiskit/aqua/circuits/gates/boolean_logical_gates.py and their tests so they can be removed from aqua.

0reactions

Cryoriscommented, Apr 1, 2021

Closing in favor of #4451.

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