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5 March 2021 Deterministic quantum logic gates based on optical nonlinearities in controllable cavities
Mikkel Heuck, Kurt Jacbs, Dirk R. Englund, Stefan Krastanov
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Proceedings Volume 11699, Quantum Computing, Communication, and Simulation; 116990J (2021) https://doi.org/10.1117/12.2582532
Event: SPIE OPTO, 2021, Online Only
Abstract
A central goal in photonic quantum information processing is the ability to perform high-fidelity logic gates between multiple optical qubits. Here, we present our recent theoretical work on using optical nonlinearities to implement controlled-phase gates between two optical qubits. Our approach is based on using dynamically coupled cavities to convert photons travelling in a waveguide into highly confined cavity modes. This conversion enables very strong interactions between photons in quasi-monochromatic modes, which enables high fidelity gates. We will discuss gate protocols based on second- and third order nonlinear materials as well as interactions with two-level emitters.
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Mikkel Heuck, Kurt Jacbs, Dirk R. Englund, and Stefan Krastanov "Deterministic quantum logic gates based on optical nonlinearities in controllable cavities", Proc. SPIE 11699, Quantum Computing, Communication, and Simulation, 116990J (5 March 2021); https://doi.org/10.1117/12.2582532
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KEYWORDS
Nonlinear optics
Logic devices
Photons
Quantum communications
Integrated optics
Optical circuits
Quantum information processing
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