qiu_quantum_computing.phase_propagator

Diagonal phase operators: circuits applying the phase e^(i f(x)) of a signal.

qubit_encoding fixes how an axis is represented by qubits, direct applies polynomial phases exactly, sample_based arbitrary phases of one sign with the sample-based phase protocol, and sample_based_manual simulates the protocol on statevectors.

Modules:

• direct –

  Direct phase circuits, applying e^(i coef x^k) for powers k up to 3.

• qubit_encoding –

  The encoding of the integer indices of an axis in the basis states of qubits.

• sample_based –

  Sample-based phase propagators, applying e^(i f(x)) for a signal f of one sign.

• sample_based_manual –

  Statevector simulation of the sample-based phase propagation, post-selected on success.