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Spin-Wave Multiplexed Atom-Cavity Electrodynamics

Kevin C. Cox, David H. Meyer, Zachary A. Castillo, Fredrik K. Fatemi, and Paul D. Kunz
Phys. Rev. Lett. 123, 263601 – Published 24 December 2019
Physics logo See Synopsis: Scaling up Storage of Quantum Information
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Abstract

We introduce multiplexed atom-cavity quantum electrodynamics with an atomic ensemble coupled to a single optical cavity mode. Multiple Raman dressing beams establish cavity-coupled spin-wave excitations with distinctive spatial profiles. Experimentally, we demonstrate the concept by observing spin-wave vacuum Rabi splittings, selective superradiance, and interference in the cavity-mediated interactions of two spin waves. We highlight that the current experimental configuration allows rapid, interchangeable cavity coupling to 4 profiles with an overlap parameter of less than 10%, enough to demonstrate, for example, a quantum repeater network simulation in the cavity. With further improvements to the optical multiplexing setup, we infer the ability to access more than 103 independent spin-wave profiles.

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  • Received 14 August 2019

DOI:https://doi.org/10.1103/PhysRevLett.123.263601

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalQuantum Information, Science & Technology

Synopsis

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Scaling up Storage of Quantum Information

Published 24 December 2019

Researchers demonstrate a method for storing quantum information by “painting” spin-wave patterns onto an ensemble of atoms.

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Authors & Affiliations

Kevin C. Cox1,*, David H. Meyer1, Zachary A. Castillo1,2, Fredrik K. Fatemi1, and Paul D. Kunz1

  • 1U.S. Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783, USA
  • 2Department of Physics, University of Maryland, College Park, Maryland 20742, USA

  • *Corresponding author. kevin.c.cox29.civ@mail.mil

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Issue

Vol. 123, Iss. 26 — 31 December 2019

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