move#

Two-qubit MOVE gate.

The MOVE gate is a population exchange operation between a qubit and a resonator, mediated by a coupler, that has the following properties:

MOVE is unitary.
The effect of MOVE is only defined in the invariant subspace \(S = \text{span}\{|00\rangle, |01\rangle, |10\rangle\}\), where it swaps the populations of the states \(|01\rangle\) and \(|10\rangle\). Anything may happen in the orthogonal subspace as long as it is unitary and invariant.
In the subspace where it is defined, MOVE is an involution: \(\text{MOVE}_S^2 = I_S\).

Thus MOVE has the following presentation in the subspace \(S\):

\[\text{MOVE}_S = |00\rangle \langle 00| + a |10\rangle \langle 01| + a^{-1} |01\rangle \langle 10|,\]

where \(a\) is an undefined complex phase. This degree of freedom (in addition to the undefined effect of the gate in the orthogonal subspace) means there is a continuum of different MOVE gates, all equally valid. The phase \(a\) is canceled when the MOVE gate is applied a second time due to the involution property.

Full path: iqm.pulse.gates.move

Functions

`apply_move_gate_phase_corrections`(schedule, ...)	Schedule-level pass applying resonator-related phase corrections in MOVE sandwiches to the moved qubit.
`validate_move_instructions`(instructions, builder)	Circuit-level pass to prepare a circuit containing MOVE gates for compilation.

Classes

`MOVE_CRF_CRF`	Qubit-resonator MOVE gate using the CRF waveform for the coupler and the qubit flux pulse.
`MOVE_CustomWaveforms`	Qubit-resonator MOVE gate using flux pulses on both components.
`MOVE_TGSS_CRF`	Qubit-resonator MOVE gate using the TGSS waveform for the coupler flux pulse and the CRF waveform for the qubit flux pulse.
`MoveMarker`	Special annotation instruction to indicate the beginning and ending of MOVE gates.

Inheritance