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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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Characterization of PT-symmetric quantum interference based on the coupled mode theory
Optics Express
|October 13, 2022
Summary
We present a quantum framework for parity-time (PT) symmetric waveguides. A novel one-photon interference phenomenon, similar to the Hong-Ou-Mandel effect, is predicted in systems with unequal losses.
Area of Science:
- Quantum optics
- Waveguide theory
- Non-Hermitian physics
Background:
- Parity-time (PT) symmetric systems offer unique optical properties.
- Coupled waveguides with unequal losses present complex quantum interference behaviors.
- The Hong-Ou-Mandel (HOM) effect is a fundamental quantum interference phenomenon.
Purpose of the Study:
- To develop a comprehensive quantum theoretical framework for PT symmetric waveguides.
- To derive the Hong-Ou-Mandel (HOM) dip expression within this framework.
- To predict novel quantum interference phenomena in PT symmetric systems.
Main Methods:
- Formulation of a quantum theoretical framework for PT symmetric waveguides.
- Derivation of the HOM dip expression using the developed theory.
- Analysis of quantum interference for one-photon states in asymmetric loss waveguides.
Main Results:
- The derived HOM dip expression precisely matches established results.
- Prediction of a novel one-photon quantum interference phenomenon.
- Demonstration that this phenomenon is exclusive to PT symmetric systems with unequal losses.
Conclusions:
- The proposed quantum framework accurately describes interference in PT symmetric waveguides.
- A unique one-photon interference effect, distinct from Hermitian systems, is predicted.
- This finding highlights the potential of PT symmetric systems with asymmetric losses for novel quantum optical applications.
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