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9 March 2023 Unidirectional bosonic quantum walk and entanglement redistribution from high-dimensional quantum states with tunable entropies
Raktim Haldar, Robert Johanning, Philip Rübeling, Anahita K. Kashi, Thomas Bækkegaard, Surajit Bose, Nikolaj T. Zinner, Michael Kues
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Proceedings Volume PC12446, Quantum Computing, Communication, and Simulation III; PC124460L (2023) https://doi.org/10.1117/12.2650007
Event: SPIE Quantum West, 2023, San Francisco, California, United States
Abstract
We generate high-dimensional bi-photon quantum frequency combs with tunable entropies exploiting the second-order nonlinearity of a periodically-poled lithium niobate waveguide through a novel pumping and filtering scheme. Using these quantum states with varying degrees of entanglement, we demonstrate unidirectional bosonic quantum walks, asymmetric energy transfer, and entanglement transport. Our non-maximally entangled quantum states can serve as excellent testbeds for several computational protocols. Moreover, we achieve the steering of the directionality in a scalable format, which enables a new control mechanism for quantum walks as well as novel modification means of joint probability distributions.
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Raktim Haldar, Robert Johanning, Philip Rübeling, Anahita K. Kashi, Thomas Bækkegaard, Surajit Bose, Nikolaj T. Zinner, and Michael Kues "Unidirectional bosonic quantum walk and entanglement redistribution from high-dimensional quantum states with tunable entropies", Proc. SPIE PC12446, Quantum Computing, Communication, and Simulation III, PC124460L (9 March 2023); https://doi.org/10.1117/12.2650007
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KEYWORDS
Quantum wells
Quantum computing
Quantum information
Nonlinear filtering
Quantum communications
Quantum physics
Waveguides
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