unitaria.QSVTCoefficients

class unitaria.QSVTCoefficients(data: ndarray, format: str)

Bases: object

Class for computing between different formats of polynomials and QSVT angles

Parameters:

• data – Coefficients of a polynomial in a basis determined by format or angles in R convention. If a polynomial is given, it should be non-normalized, i.e. the actual polynomial that should be applied to the matrix.

• format – One of "angles" or "chebyshev"

Variables:

• polynomial – The normalized polynomial, defined on [-1, 1]. This is always has domain == [-1, 1] and window == [-1, 1].

• output_normalization – Factor by which the y-axis of the polynomial is normalized, i.e. the normalization of the resulting block encoding

• angles – The angles in R-convention. Will be symmetric if data are polynomial coefficients

degree() → int

angles: ndarray

output_normalization: float

polynomial: Chebyshev