qml.fourier.get_spectrum

get_spectrum(op, decimals)

Extract the frequencies contributed by an input-encoding gate to the overall Fourier representation of a quantum circuit.

If \(G\) is the generator of the input-encoding gate \(\exp(-i x G)\), the frequencies are the differences between any two of \(G\)’s eigenvalues. We only compute non-negative frequencies in this subroutine.

Parameters

• op (Operation) – Operation to extract the frequencies for

• decimals (int) – Number of decimal places to round the frequencies to

Returns

non-negative frequencies contributed by this input-encoding gate

Return type

set[float]

code/api/pennylane.fourier.get_spectrum

 

Download Python script

 

Download Notebook

 

View on GitHub