Qpe

Functions:

Name	Description
`qpe_flexible`	[Qmod Classiq-library function].
`qpe`	[Qmod Classiq-library function].

qpe_flexible

qpe_flexible(
unitary_with_power: QCallable[CInt],
phase: QArray[QBit]
) -> None

[Qmod Classiq-library function] Implements the Quantum Phase Estimation (QPE) algorithm, which estimates the phase (eigenvalue) associated with an eigenstate of a given unitary operator

U

. This is a flexible version that allows the user to provide a callable that generates the unitary operator

U^k

for a given integer

k

, offering greater flexibility in handling different quantum circuits using some powering rule. Parameters:

Name	Type	Description	Default
`unitary_with_power`	`QCallable[CInt]`	A callable that returns the unitary operator $U^k$ given an integer $k$ . This callable is used to control the application of powers of the unitary operator.	required
`phase`	`QArray[QBit]`	The quantum variable that represents the estimated phase (eigenvalue), assuming initialized to zero.	required

qpe(
unitary: QCallable,
phase: QNum
) -> None

[Qmod Classiq-library function] Implements the standard Quantum Phase Estimation (QPE) algorithm, which estimates the phase (eigenvalue) associated with an eigenstate of a given unitary operator

U

. Parameters:

Name	Type	Description	Default
`unitary`	`QCallable`	A callable representing the unitary operator $U$ , whose eigenvalue is to be estimated.	required
`phase`	`QNum`	The quantum variable that represents the estimated phase (eigenvalue), assuming initialized to zero.	required

​qpe_flexible

​qpe

qpe_flexible

qpe