Controlling two-photon interference and entanglement with mechanical rotations

Toros, Marko, Cromb, Marion, Restuccia, Sara, Braidotti, Maria Chiara, Gibson, Graham M., Ulbricht, Hendrik, Paternostro, Mauro, Padgett, Miles J. and Faccio, Daniele (2023) Controlling two-photon interference and entanglement with mechanical rotations. Padgett, Miles J., Fedrizzi, Alessandro, Holynski, Michael and Politi, Alberto (eds.) In Quantum Technology: Driving Commercialisation of an Enabling Science IV. vol. 12795, SPIE. 4 pp . (doi:10.1117/12.2691216).

Abstract

We review recent experimental and theoretical results of photon interferometry on rotating platforms. Quantum phenomena such as two-photon interference and entanglement can be controlled with mechanical rotations in a regime accessible to table-top experiments. We first discuss experiments demonstrating how low-frequency mechanical rotations affect the bunching behavior of frequency-entangled photon pairs. It was shown that low-frequency mechanical rotations can affect the temporal distinguishability of photons and can transform photonic behavior from perfectly indistinguishable (bosonic behavior) to perfectly distinguishable (fermionic behavior). We then give a future outlook for testing the generation of entanglement from mechanical rotation. A recent theoretical work showed that generating path-polarization entanglement from mechanical rotations could be verified with present technology. These works make a strong case for further exploration of quantum phenomena at the interface with non-inertial (rotational) motion.

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Contributors

Author: Hendrik Ulbricht

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