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Squeezing-induced nonreciprocal photon blockade in an optomechanical microresonator
Optics Express
|July 21, 2023
Summary
We present a new method for generating nonreciprocal photon blockade in microresonators. This approach offers a simpler way to create single-photon sources for quantum technologies.
Area of Science:
- Quantum Optics
- Photonics
- Cavity Quantum Electrodynamics
Background:
- Nonreciprocal photon blockade is crucial for advanced quantum technologies.
- Existing methods often require stringent conditions or complex setups.
Purpose of the Study:
- To propose a scheme for generating nonreciprocal photon blockade in a stationary whispering gallery microresonator.
- To explore two distinct physical mechanisms for achieving this phenomenon.
Main Methods:
- Utilizing quantum squeezing via parametric interaction to induce nonreciprocity.
- Employing destructive quantum interference to enhance nonreciprocity.
- Numerical simulations of the quantum master equation for verification.
Main Results:
- Demonstrated two viable mechanisms for nonreciprocal photon blockade.
- Identified a method requiring weaker nonlinear strength and eliminating the need for broadband squeezed vacuum fields.
- Verified optimal parameter relations through numerical simulations.
Conclusions:
- The proposed scheme provides a more accessible route to nonreciprocal single-photon sources.
- Potential applications span quantum communication, quantum information processing, and topological photonics.
