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arXiv · 2008.06611

Dispersion cancellation in a quantum interferometer with independent single photons

Dong-Gil Im·Yosep Kim·Yoon-Ho Kim
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Abstract

A key technique to perform a proper quantum information processing is to get a high visibility quantum interference between independent single photons. One of the crucial elements that affects the quantum interference is a group velocity dispersion that occurs when the single photons pass through a dispersive medium. We theoretically and experimentally demonstrate that an effect of group velocity dispersion on the two-photon interference can be cancelled if two independent single photons experience the same amount of pulse broadening. This dispersion cancellation effect can be generalized to a multi-path linear interferometer with multiple independent single photons. As multi-path quantum interferometers are at the heart of quantum communication, photonic quantum computing, and boson sampling applications, our work should find wide applicability in quantum information science.

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Dong-Gil Im, Yosep Kim, Yoon-Ho Kim. 2020-08-15. Dispersion cancellation in a quantum interferometer with independent single photons. https://doi.org/10.1364/oe.415610

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