Linopt is a numerical library designed for linear-optical quantum system simulation. The core functions are implemented using C++ to enable efficient performance. The classes and functions are exposed to Python which enables simple and easy use of the library.
The package is designed to simulate the evolution of bosonic states encoded in occupation number basis through a discrete unitary network. The generic scheme of the system is depicted below.
The package implements methods for computing probabilities of finding the output state in the fock basis given the defined input state. The implementation allows easy manipulation with the bosonic fock states, the basis state sets and the unitary networks. The package is primarily developed to enable efficient design of linear-optical interferometer for quantum computing purposes. It enables the user to easily compute the postselected output state of a given linear-optical interferometer or deliver the configuration of the interferometer given a precomputed unitary matrix.
