Single-Photon Synchronization with a Room-Temperature Atomic Quantum Memory

Omri Davidson; Ohad Yogev; Eilon Poem; Ofer Firstenberg

doi:https://doi.org/10.1103/PhysRevLett.131.033601

Single-Photon Synchronization with a Room-Temperature Atomic Quantum Memory

Omri Davidson, Ohad Yogev, Eilon Poem, Ofer Firstenberg

Department of Physics of Complex Systems

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

Efficient synchronization of single photons that are compatible with narrow band atomic transitions is an outstanding challenge, which could prove essential for photonic quantum information processing. Here we report on the synchronization of independently generated single photons using a room-temperature atomic quantum memory. The photon source and the memory are interconnected by fibers and employ the same ladder-level atomic scheme. We store and retrieve the heralded single photons with end-to-end efficiency of η_e2e=25% and final antibunching of g_h⁽²⁾=0.023. Our synchronization process results in an over tenfold increase in the photon-pair coincidence rate, reaching a rate of more than 1000 detected synchronized photon pairs per second. The indistinguishability of the synchronized photons is verified by a Hong-Ou-Mandel interference measurement.

Original language	English
Article number	033601
Journal	Physical review letters
Volume	131
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.131.033601
State	Published - 21 Jul 2023

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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https://doi.org/10.1103/PhysRevLett.131.033601

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title = "Single-Photon Synchronization with a Room-Temperature Atomic Quantum Memory",

abstract = "Efficient synchronization of single photons that are compatible with narrow band atomic transitions is an outstanding challenge, which could prove essential for photonic quantum information processing. Here we report on the synchronization of independently generated single photons using a room-temperature atomic quantum memory. The photon source and the memory are interconnected by fibers and employ the same ladder-level atomic scheme. We store and retrieve the heralded single photons with end-to-end efficiency of ηe2e=25% and final antibunching of gh(2)=0.023. Our synchronization process results in an over tenfold increase in the photon-pair coincidence rate, reaching a rate of more than 1000 detected synchronized photon pairs per second. The indistinguishability of the synchronized photons is verified by a Hong-Ou-Mandel interference measurement.",

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N2 - Efficient synchronization of single photons that are compatible with narrow band atomic transitions is an outstanding challenge, which could prove essential for photonic quantum information processing. Here we report on the synchronization of independently generated single photons using a room-temperature atomic quantum memory. The photon source and the memory are interconnected by fibers and employ the same ladder-level atomic scheme. We store and retrieve the heralded single photons with end-to-end efficiency of ηe2e=25% and final antibunching of gh(2)=0.023. Our synchronization process results in an over tenfold increase in the photon-pair coincidence rate, reaching a rate of more than 1000 detected synchronized photon pairs per second. The indistinguishability of the synchronized photons is verified by a Hong-Ou-Mandel interference measurement.

AB - Efficient synchronization of single photons that are compatible with narrow band atomic transitions is an outstanding challenge, which could prove essential for photonic quantum information processing. Here we report on the synchronization of independently generated single photons using a room-temperature atomic quantum memory. The photon source and the memory are interconnected by fibers and employ the same ladder-level atomic scheme. We store and retrieve the heralded single photons with end-to-end efficiency of ηe2e=25% and final antibunching of gh(2)=0.023. Our synchronization process results in an over tenfold increase in the photon-pair coincidence rate, reaching a rate of more than 1000 detected synchronized photon pairs per second. The indistinguishability of the synchronized photons is verified by a Hong-Ou-Mandel interference measurement.

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Single-Photon Synchronization with a Room-Temperature Atomic Quantum Memory

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