Dispersion cancellation in a quantum interferometer with independent single photons
arXiv:2008.06611 · doi:10.1364/OE.415610
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.
arXiv comment5 pages, 5 figures
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- Spectrally resolved two-photon interference in a modified Hong-Ou-Mandel interferometer
- Measurement of ultrashort bi-photon correlation times with an integrated two-colour broadband SU(1,1)-interferometer
- Asymmetric node placement in fiber-based quantum networks
- Propagation of temporal mode multiplexed optical fields in fibers: influence of dispersion