Journal
PHYSICAL REVIEW LETTERS
Volume 112, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.040501
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Funding
- Durham University
- EPSRC [EP/H002839/1]
- EU Marie Curie ITN COHERENCE Network
- Engineering and Physical Sciences Research Council [EP/H002839/1] Funding Source: researchfish
- EPSRC [EP/H002839/1] Funding Source: UKRI
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In this Letter, 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. By 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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