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.
All-optical quantum information processing using Rydberg gates
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abstract
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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2024 1verdicts
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Enhancement of Rydberg Blockade via Microwave Dressing
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.