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Large Collective Lamb Shift of Two Distant Superconducting Artificial Atoms
Wen,P. Y.1,2; Lin,K. T.3; Kockum,A. F.4,5; Suri,B.4,6; Ian,H.7,8; Chen,J. C.1,2; Mao,S. Y.9; Chiu,C. C.10; Delsing,P.4; Nori,F.5,11; Lin,G. D.3; Hoi,I. C.1,2
Source PublicationPhysical Review Letters

Virtual photons can mediate interaction between atoms, resulting in an energy shift known as a collective Lamb shift. Observing the collective Lamb shift is challenging, since it can be obscured by radiative decay and direct atom-atom interactions. Here, we place two superconducting qubits in a transmission line terminated by a mirror, which suppresses decay. We measure a collective Lamb shift reaching 0.8% of the qubit transition frequency and twice the transition linewidth. We also show that the qubits can interact via the transmission line even if one of them does not decay into it.

URLView the original
Indexed BySCIE
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000500743400011
Scopus ID2-s2.0-85076526573
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Cited Times [WOS]:21   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorHoi,I. C.
Affiliation1.Department of Physics,National Tsing Hua University,Hsinchu,30013,Taiwan
2.Center for Quantum Technology,National Tsing Hua University,Hsinchu,30013,Taiwan
3.CQSE,Department of Physics,National Taiwan University,Taipei,10617,Taiwan
4.Department of Microtechnology and Nanoscience,Chalmers University of Technology,Gothenburg,412 96,Sweden
5.Theoretical Quantum Physics Laboratory,RIKEN Cluster for Pioneering Research,Wako-shi, Saitama,351-0198,Japan
6.Department of Instrumentation and Applied Physics,Indian Institute of Science,Bengaluru,560012,India
7.Institute of Applied Physics and Materials Engineering,University of Macau,Macao
8.UMacau Zhuhai Research Institute,Zhuhai, Guangdong,519031,China
9.Institute of Electro-Optical Engineering,National Chiao Tung University,Hsinchu,30013,Taiwan
10.Department of Electrical Engineering,National Tsing Hua University,Hsinchu,30013,Taiwan
11.Physics Department,University of Michigan,Ann Arbor,48109-1040,United States
Recommended Citation
GB/T 7714
Wen,P. Y.,Lin,K. T.,Kockum,A. F.,et al. Large Collective Lamb Shift of Two Distant Superconducting Artificial Atoms[J]. Physical Review Letters,2019,123(23).
APA Wen,P. Y.,Lin,K. T.,Kockum,A. F.,Suri,B.,Ian,H.,Chen,J. C.,Mao,S. Y.,Chiu,C. C.,Delsing,P.,Nori,F.,Lin,G. D.,&Hoi,I. C..(2019).Large Collective Lamb Shift of Two Distant Superconducting Artificial Atoms.Physical Review Letters,123(23).
MLA Wen,P. Y.,et al."Large Collective Lamb Shift of Two Distant Superconducting Artificial Atoms".Physical Review Letters 123.23(2019).
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