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Frequency-domain Hong-Ou-Mandel interference with linear optics
Optics Letters
|June 16, 2018
Summary
Researchers observed the Hong-Ou-Mandel (HOM) interference effect using photons with different spectral modes. This breakthrough utilizes a novel probabilistic frequency beam splitter for quantum information processing.
Area of Science:
- Quantum optics
- Quantum information science
Background:
- The Hong-Ou-Mandel (HOM) effect demonstrates nonclassical behavior of single photons.
- Photon bunching occurs when two identical photons incident on a beam splitter exit together.
Purpose of the Study:
- To observe HOM interference between photons in different spectral modes.
- To utilize a probabilistic frequency beam splitter for quantum experiments.
Main Methods:
- Employed a single electro-optic phase modulator as a probabilistic frequency beam splitter.
- Exploited the frequency degree of freedom for photons in HOM interference.
Main Results:
- Successfully observed HOM interference with spectrally distinct yet otherwise identical photons.
- Demonstrated a method to control photon indistinguishability via spectral modes.
Conclusions:
- The developed technique enables linear optical quantum information processing.
- Highlights the potential of using photon frequency as a quantum resource for quantum computing.
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