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Cavity quantum electrodynamics with atom-like mirrors

Mirhosseini, Mohammad and Kim, Eunjong and Zhang, Xueyue and Sipahigil, Alp and Dieterle, Paul B. and Keller, Andrew J. and Asenjo-Garcia, Ana and Chang, Darrick E. and Painter, Oskar (2019) Cavity quantum electrodynamics with atom-like mirrors. Nature, 569 (7758). pp. 692-697. ISSN 0028-0836. doi:10.1038/s41586-019-1196-1.

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It has long been recognized that atomic emission of radiation is not an immutable property of an atom, but is instead dependent on the electromagnetic environment and, in the case of ensembles, also on the collective interactions between the atoms. In an open radiative environment, the hallmark of collective interactions is enhanced spontaneous emission—super-radiance—with non-dissipative dynamics largely obscured by rapid atomic decay. Here we observe the dynamical exchange of excitations between a single artificial atom and an entangled collective state of an atomic array through the precise positioning of artificial atoms realized as superconducting qubits along a one-dimensional waveguide. This collective state is dark, trapping radiation and creating a cavity-like system with artificial atoms acting as resonant mirrors in the otherwise open waveguide. The emergent atom–cavity system is shown to have a large interaction-to-dissipation ratio (cooperativity exceeding 100), reaching the regime of strong coupling, in which coherent interactions dominate dissipative and decoherence effects. Achieving strong coupling with interacting qubits in an open waveguide provides a means of synthesizing multi-photon dark states with high efficiency and paves the way for exploiting correlated dissipation and decoherence-free subspaces of quantum emitter arrays at the many-body level.

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URLURL TypeDescription ReadCube access ItemDiscussion Paper
Mirhosseini, Mohammad0000-0002-9084-6880
Kim, Eunjong0000-0003-4879-8819
Zhang, Xueyue0000-0001-8994-0629
Sipahigil, Alp0000-0003-1469-5272
Keller, Andrew J.0000-0003-3030-1149
Asenjo-Garcia, Ana0000-0001-9850-5610
Chang, Darrick E.0000-0002-5426-7339
Painter, Oskar0000-0002-1581-9209
Alternate Title:Cavity QED with atom-like mirrors, Waveguide-mediated interaction of artificial atoms in the strong coupling regime
Additional Information:© 2019 Springer Nature Publishing AG. Received 29 September 2018; Accepted 07 March 2019; Published 15 May 2019. We thank J.-H. Yeh and B. Palmer for the use of one of their cryogenic attenuators, which reduced thermal noise in the input waveguide line. This work was supported by the AFOSR MURI Quantum Photonic Matter (grant FA9550-16-1-0323), the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (grant PHY-1125565) with the support of the Gordon and Betty Moore Foundation, and the Kavli Nanoscience Institute at Caltech. D.E.C. acknowledges support from the ERC Starting Grant FOQAL, the MINECO Plan Nacional Grant CANS, the MINECO Severo Ochoa grant SEV-2015-0522, the CERCA Programme/Generalitat de Catalunya and the Fundacio Privada Cellex. M.M. is supported through a KNI Postdoctoral Fellowship. X.Z. is supported by a Yariv/Blauvelt Fellowship. A.J.K. and A.S. are supported by IQIM Postdoctoral Scholarships. P.B.D. is supported by a Hertz Graduate Fellowship Award. A.A.-G. is supported by the Global Marie Curie Fellowship under the LANTERN programme. Author Contributions: M.M., E.K., P.B.D., A.A.-G., D.E.C. and O.P. came up with the concept and planned the experiment. M.M., E.K., X.Z., P.B.D., A.S. and A.J.K. performed the device design and fabrication. E.K., X.Z., M.M., and A.S. performed the measurements and analysed the data. All authors contributed to the writing of the manuscript. The authors declare no competing interests.
Group:Institute for Quantum Information and Matter, Kavli Nanoscience Institute
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-16-1-0323
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Kavli Nanoscience InstituteUNSPECIFIED
European Research Council (ERC)FOQAL
Ministerio de Economía, Industria y Competitividad (MINECO)SEV-2015-0522
Generalitat de CatalunyaUNSPECIFIED
Fundacio Privada CellexUNSPECIFIED
Fannie and John Hertz FoundationUNSPECIFIED
Marie Curie FellowshipLANTERN
Subject Keywords:Atomic and molecular interactions with photons; Qubits; Single photons and quantum effects
Issue or Number:7758
Record Number:CaltechAUTHORS:20190225-095611254
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93217
Deposited By: George Porter
Deposited On:15 May 2019 23:00
Last Modified:08 Feb 2023 22:44

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