SIMULATION OF QUANTUM OPTICAL SYSTEMS SUBJECT TO AN ELECTROMAGNETIC PULSE

摘要

This specification describes methods, systems and apparatus for simulating quantum optical systems. According to a first aspect of this disclosure, there is described a computer implemented method of simulating a quantum optical system, the method comprising: receiving properties of the quantum optical system; receiving properties of an electromagnetic pulse; determining a set of pseudospin equations based on the properties of the quantum optical system; determining initial values of electric field components and/or magnetic field components, and pseudospin components on a grid corresponding to a region of space comprising the optical system based on the pseudospin equations and the properties of the electromagnetic pulse; performing temporally shifted updating of the electric field components, the magnetic field components and the pseudospin components on the grid based on Maxwell's curl equations and the pseudospin equation to simulate time evolution of the quantum optical system under the electromagnetic pulse; wherein the grid comprises: a first set of grid points associated with the magnetic field components; a second set of grid points associated with the electric field and pseudospin components, wherein the second set of grid points is spatially offset from the first set of grid points.