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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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Two-photon interference of temporally separated photons
Heonoh Kim1, Sang Min Lee1, Han Seb Moon1
1Department of Physics, Pusan National University, Geumjeong-Gu, Busan 609-735, Korea.
Scientific Reports
|October 7, 2016
Summary
We demonstrate two-photon interference using temporally separated photons in Mach-Zehnder and Michelson interferometers, observing both Hong-Ou-Mandel and path-entangled interference effects simultaneously.
Area of Science:
- Quantum Optics
- Quantum Interferometry
Background:
- Quantum interference is fundamental to quantum mechanics.
- Understanding two-photon interference is crucial for quantum information processing.
Purpose of the Study:
- To experimentally demonstrate two-photon interference with temporally separated photons.
- To investigate interference in both Mach-Zehnder and Michelson interferometers.
- To simultaneously observe Hong-Ou-Mandel and path-entangled two-photon interference.
Main Methods:
- Probabilistically preparing two-photon states with a large time delay.
- Utilizing Mach-Zehnder and polarization-based Michelson interferometers.
- Observing two-photon interference fringes.
Main Results:
- Successful demonstration of two-photon interference with temporally separated photons.
- Simultaneous observation of Hong-Ou-Mandel and path-entangled interference.
- Observation of interference fringes for both single-photon and two-photon wavepackets.
Conclusions:
- The experiments provide a comprehensive understanding of two-photon interference origins.
- The findings facilitate deeper insights into quantum interference phenomena.
- This work advances the study of quantum states with temporal separation.
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