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Proposal for demonstrating the Hong-Ou-Mandel effect with matter waves.
R J Lewis-Swan1, K V Kheruntsyan1
1School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland 4072, Australia.
Nature Communications
|April 25, 2014
Summary
Researchers propose a new experiment to demonstrate the Hong-Ou-Mandel effect with atoms, not just photons. This quantum interference demonstration with massive particles could lead to Bell inequality tests.
Area of Science:
- Quantum Optics
- Atomic Physics
- Quantum Information
Background:
- The Hong-Ou-Mandel effect demonstrates destructive quantum interference using indistinguishable bosons.
- This effect has been limited to massless photons, hindering exploration with massive particles.
Purpose of the Study:
- To propose and theoretically validate an experiment realizing the Hong-Ou-Mandel effect in the matter-wave regime.
- To develop a novel measurement protocol for matter-wave interference, reducing experimental complexity.
Main Methods:
- Utilizing pair-correlated atoms generated from colliding Bose-Einstein condensates.
- Applying two laser-induced Bragg pulses to the atom pairs.
- Developing a multimode matter-wave field measurement protocol to determine interference visibility.
Main Results:
- Simulations predict a Hong-Ou-Mandel dip visibility of approximately 69% for the proposed experiment.
- The proposed protocol bypasses the need for repeated measurements common in optical setups.
Conclusions:
- The experiment offers a viable path to demonstrating quantum interference with massive particles.
- This work paves the way for potential Bell inequality violations using massive particles in related setups.
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