Path Properties

PauliFreqTracker(coeff::Number, nsins::Int, ncos::Int, freq::Int)

Wrapper type for numerical coefficients in Pauli propagation that records the number of sin and cos factors applied via a PauliRotation gate, and the so-called frequency, which is their sum. It appears redundant but these three properties need to be tracked separately because of how merging affects them.

PauliFreqTracker(coeff::Number)

Constructor for PauliFreqTracker from only a coefficient. Initializes nsins, ncos, and freq to zero.

applytoall!(gate::PauliRotation, theta, psum, aux_psum; kwargs...)

Overload of applytoall! for PauliRotation gates acting onto Pauli sums with PathProperties coefficients.

Abstract type for wrapping coefficients and record custom path properties

Multiplication of a PathProperties object with a number. Requires that the PathProperties object has a coeff field defined which will be multiplied.

Multiplication of the coeff field in a PathProperties object with a number. Requires that the PathProperties object has a coeff field defined which will be multiplied.

Addition of two PathProperties objects of equal concrete type. Adds the coeff fields and takes the minimum of the other fields. Requires that the PathProperties object has a coeff field defined.

float(path::PathProperties)

Returns an equivalent PathProperties object where float() is applied to the coeff field.

Pretty print for PathProperties

tonumber(path::PathProperties)

Get the numerical coefficient of a PathProperties wrapper.

wrapcoefficients(pstr::PauliString, PathPropertiesType<:PathProperties)

Wrap the coefficient of a PauliString into a custom PathProperties type. For anything that is not natively supported by the library, you can subtype PathProperties. A one-argument constructor of the custom PathProperties type from a coefficient must be defined.

wrapcoefficients(psum::PauliSum, PathPropertiesType<:PathProperties)

Wrap the coefficients of a PauliSum into a custom PathProperties type. For anything that is not natively supported by the library, you can subtype PathProperties. A one-argument constructor of the custom PathProperties type from a coefficient must be defined.