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Quantum Computing

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Patent US10649307


Issued 2020-05-12

Integrated Devices For Squeezed Light Generation

An apparatus includes an optical medium characterized by a third-order nonlinear optical susceptibility. The apparatus also includes 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 includes a pulsed light beam. The apparatus also includes 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 includes a continuous wave (CW) light beam. The pump light beam and the drive light beam are configured to generate a signal light beam in a squeezed state of light via spontaneous four-wave mixing in the optical medium.


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5 Independent Claims

  • Independent Claim 1. An apparatus, comprising: an optical medium characterized by a third-order nonlinear optical susceptibility, the optical medium including a first ring resonatora pumplight 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 beama drive light source in optical communication with the optical medium andconfigured 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 viaspontaneous four-wave mixing in the optical medium, a coupler in optical communication with the first ring resonator and configured to couple the pump light beam and the drive light beam into the first ring resonatorand a second ring resonator inoptical communication with the first ring resonator and configured to suppress auxiliary resonance within the first ring resonator.

  • Independent Claim 8. An apparatus, comprising: an optical medium characterized by a third-order nonlinear optical susceptibility, the optical medium including a ring resonatora pump light source in optical communication with the optical medium and configuredto send a pump light beam to the optical medium, the pump light beam including a pulsed light beama drive light source in optical communication with the optical medium and configured to send a drive light beam to the optical medium, the drive lightbeam 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 mediuma first coupler inoptical communication with the ring resonator and configured to couple the pump light beam and the drive light beam into the ring resonatorand a second coupler in optical communication with the ring resonator and configured to suppress auxiliaryresonance within the ring resonator.

  • Independent Claim 9. A method, comprising: sending, via a coupler, 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 afirst ring resonatorcoupling a drive light beam into the optical medium via the coupler 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, thedrive light beam including a continuous wave (CW) light beamsuppressing auxiliary resonances within the first ring resonator using a second ring resonator disposed in optical communication with the first ring resonator.

  • Independent Claim 19. 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 resonatorsending 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 continuouswave (CW) light beamand suppressing auxiliary resonances within the ring resonator using an auxiliary coupler disposed in optical communication with the ring resonator.

  • Independent Claim 20. A system, comprising: a ring resonator including an optical medium characterized by a third-order nonlinear optical susceptibilitya linear waveguide in optical communication with the ring resonator and configured to propagate a pumplight beam and a drive light beama 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 pumplight 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 asqueezed light of state via four-wave mixingand a second coupler in optical communication with the ring resonator and configured to suppress auxiliary resonances within the ring resonator.