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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Enhanced on-chip phase measurement by inverse weak value amplification.

Meiting Song1, John Steinmetz2, Yi Zhang1

  • 1The Institute of Optics, University of Rochester, Rochester, NY, 14627, USA.

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Summary

Weak value amplification enhances optical sensor sensitivity by amplifying signals without technical noise. This integrated photonic platform offers a more sensitive, robust, and compact solution for phase measurement and frequency sensing.

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Area of Science:

  • Photonics and Metrology
  • Quantum Optics

Background:

  • Optical interferometry is crucial for precision measurements in fields like gravitational wave detection and gyroscopes.
  • Achieving shot-noise-limited sensitivity is challenging for many optical sensors due to technical noise amplification.
  • Weak value amplification (WVA) offers a method to enhance interferometric signals without amplifying certain noises.

Purpose of the Study:

  • To implement a generalized weak value amplification on an integrated photonic platform.
  • To demonstrate a more sensitive, robust, and compact phase-measuring platform.
  • To explore applications in coherent communications and quantum sensing.

Main Methods:

  • Utilized a multi-mode interferometer on an integrated photonic chip.
  • Implemented a generalized weak value amplification technique.
  • Integrated a ring resonator for frequency measurements.

Main Results:

  • Achieved a 7 dB signal enhancement compared to a standard Mach-Zehnder interferometer at equal optical power.
  • Demonstrated frequency measurements with a sensitivity of 2 kHz.
  • Showcased the potential for a compact and robust phase-measuring platform.

Conclusions:

  • The integrated photonic platform with generalized weak value amplification provides significant signal enhancement.
  • This technology offers a pathway to highly sensitive and robust phase and frequency measurements.
  • The platform is adaptable for applications in advanced optical sensing, communications, and quantum technologies.