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All-optical quantum information processing using Rydberg gates

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arxiv 1309.7933 v1 pith:MJ5ORXU5 submitted 2013-09-30 quant-ph physics.atom-ph

D. Paredes-Barato , C. S. Adams This is my paper · ORCID
classification quant-phphysics.atom-ph
keywords rydberggateinteractionschemeachievableall-opticalblockadecontrolled-z
verification ladder T0 review T1 audit T2 compute T3 formal
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In this work we propose a hybrid scheme to implement a photonic controlled-z (CZ) gate using photon storage in highly-excited Rydberg states, which controls the effective photon-photon interaction using resonant microwave fields. Our scheme decouples the light propagation from the interaction and exploits the spatial properties of the dipole blockade phenomenon to realize a CZ gate with minimal loss and mode distortion. Excluding the coupling efficiency, fidelities exceeding 95% are achievable and are found to be mainly limited by motional dephasing and the finite lifetime of the Rydberg levels.

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  1. Enhancement of Rydberg Blockade via Microwave Dressing

    physics.atom-ph 2024-11 conditional novelty 6.0 of 10

    Microwave dressing of 87Rb Rydberg atoms strengthens effective interactions, lowering the photon-correlation g(2)(0) and increasing the blockade radius in an ensemble single-photon source.

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