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Timeline for Circuit for pre-factors +-i, -1

Current License: CC BY-SA 4.0

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Jun 26, 2022 at 3:10 comment added Andreas Burger You are right, the controlled version of two gates (x, u from Egretta Thula's answer) per qubit quickly becomes a lot. What do you mean by applying 'appropriate Rz(theta) to the later control'? You mean applying Rz to the controlling qubits? How does that work?
Jun 26, 2022 at 1:32 vote accept Andreas Burger
Jun 25, 2022 at 17:14 comment added Craig Gidney You almost certainly want to get the "global" phase by applying an appropriate Rz(theta) to the later control, instead of by tweaking the circuit being controlled. This will tend to produce a smaller result, since you'll use a a single Z rotation instead of multiple controlled operations to get the effect you're going for.
Jun 25, 2022 at 12:53 answer added Egretta.Thula timeline score: 4
Jun 25, 2022 at 12:19 history asked Andreas Burger CC BY-SA 4.0