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Waveguide-mediated interaction of artificial atoms in the strong coupling regime

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 (2018) Waveguide-mediated interaction of artificial atoms in the strong coupling regime. . (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20190108-091005866

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Abstract

Waveguide quantum electrodynamics studies photon-mediated interactions of quantum emitters in a one-dimensional radiation channel. Although signatures of such interactions have been observed previously in a variety of physical systems, observation of coherent cooperative dynamics has been obscured by radiative decay of atoms into the waveguide. Employing transmon qubits as artificial atoms coupled to a microwave coplanar waveguide, here we observe dynamical oscillations in an open system where a designated probe qubit interacts with an entangled dark state of an array of qubits which effectively traps radiation as an atomic cavity. The qubit-cavity system is shown to achieve a large cooperativity of C=172 due to collective enhancement of photon-mediated interactions, entering the strong coupling regime. The quantum coherence of the dark state cavity is also explored through its nonlinear response at the single-excitation level. With realistic refinements, this system is suitable for studying the many-body dynamics of large (N>10) quantum spin chains, synthesizing highly non-classical radiation fields on demand, and implementing universal quantum logic operations with high fidelity on information encoded within decoherence-free subspaces.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
https://arxiv.org/abs/1809.09752arXivDiscussion Paper
ORCID:
AuthorORCID
Zhang, Xueyue0000-0001-8994-0629
Sipahigil, Alp0000-0003-1469-5272
Keller, Andrew J.0000-0003-3030-1149
Painter, Oskar0000-0002-1581-9209
Additional Information:The authors thank Jen-Hao Yeh and Ben Palmer for the use of one of their cryogenic attenuators, critical to reducing 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 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, MINECO Plan Nacional Grant CANS, MINECO Severo Ochoa Grant No. SEV-2015-0522, CERCA Programme/ Generalitat de Catalunya, and Fundacio Privada. M.M. is supported through a KNI Postdoctoral Fellowship, A.J.K. and A.S. are supported by IQIM Postdoctoral Scholarships, P.B.D. is supported by a Hertz Graduate Fellowship Award, and A.A.-G. is supported by the Global Marie Curie Fellowship under the LANTERN program.
Group:IQIM, Institute for Quantum Information and Matter, Kavli Nanoscience Institute
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-16-1-0323
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSFPHY-1125565
Gordon and Betty Moore FoundationUNSPECIFIED
Kavli Nanoscience InstituteUNSPECIFIED
European Research Council (ERC)FOQAL
Ministerio de Economía, Industria y Competitividad (MINECO)CANS
Ministerio de Economía, Industria y Competitividad (MINECO)SEV-2015-0522
Generalitat de CatalunyaUNSPECIFIED
Fundacio PrivadaUNSPECIFIED
Fannie and John Hertz FoundationUNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Record Number:CaltechAUTHORS:20190108-091005866
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190108-091005866
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92129
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Jan 2019 21:02
Last Modified:08 Jan 2019 21:02

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