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 Uk 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 Uk 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
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 |
