cirq.protocols.SupportsPhase

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An effect that can be phased around the Z axis of target qubits.

View aliases

Main aliases

`cirq.SupportsPhase`, `cirq.protocols.phase_protocol.SupportsPhase`

cirq.protocols.SupportsPhase(
    *args, **kwargs
)

Methods

_phase_by_

View source

_phase_by_(
    phase_turns: float,
    qubit_index: int
)

Returns a phased version of the effect.

Specifically, returns an object with matrix P U P^-1 (up to global phase) where U is the given object's matrix and P = Z(qubit_index)**(2 * phase_turns). For example, an X gate phased by 90 degrees would be a Y gate.

Args
phase_turns	The amount to phase the gate, in fractions of a whole turn. Multiply by 2π to get radians.
qubit_index	The index of the target qubit the phasing applies to.

Returns
The phased gate or operation.