Integrated devices for squeezed light generation

An apparatus, comprising:

• an optical medium characterized by a third-order nonlinear optical susceptibility, the optical medium including a ring resonator;
• a pump light source in optical communication with the optical medium and configured to send a pump light beam to the optical medium, the pump light beam including a pulsed light beam;
• a drive light source in optical communication with the optical medium and configured to send a drive light beam to the optical medium, the drive light beam including a continuous wave (CW) light beam, the pump light beam and the drive light beam being configured to generate a signal light beam in a squeezed state of light via spontaneous four-wave mixing in the optical medium;
• a first coupler in optical communication with the ring resonator and configured to couple the pump light beam and the drive light beam into the ring resonator;
• and
• a second coupler in optical communication with the ring resonator and configured to suppress auxiliary resonance within the ring resonator.

A method, comprising:

• sending a pump light beam into an optical medium characterized by a third-order nonlinear optical susceptibility, the pump light beam including a pulsed light beam and the optical medium including a ring resonator;
• sending a drive light beam into the optical medium to interact with the pump light beam so as to generate a signal light beam at a squeezed state of light via spontaneous four-wave mixing in the optical medium, the drive light beam including a continuous wave (CW) light beam;
• and
• suppressing auxiliary resonances within the ring resonator using an auxiliary coupler disposed in optical communication with the ring resonator.

A system, comprising:

• a ring resonator including an optical medium characterized by a third-order nonlinear optical susceptibility;
• a linear waveguide in optical communication with the ring resonator and configured to propagate a pump light beam and a drive light beam;
• a first coupler in optical communication with the ring resonator and the linear waveguide and configured to couple the pump light beam and the drive light beam into the ring resonator, the drive light beam and pump light beam being configured to reduce an effect of time-varying self-phase modulation and an effect of time-varying cross-phase modulation, the pump light beam and the drive light beam being further configured to generate a signal light beam in a squeezed light of state via four-wave mixing;
• and
• a second coupler in optical communication with the ring resonator and configured to suppress auxiliary resonances within the ring resonator.