Large Collective Lamb Shift of Two Distant Superconducting Artificial Atoms
| Autor: | B. Suri, Per Delsing, S. Y. Mao, Hou Ian, J. Chen, Guin-Dar Lin, Io-Chun Hoi, Kuan-Ting Lin, Anton Frisk Kockum, P. Y. Wen, Franco Nori, Chi Cheng Chiu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Superconductivity Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics General Physics and Astronomy Virtual particle FOS: Physical sciences 01 natural sciences Measure (mathematics) Lamb shift Laser linewidth Transmission line Qubit 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Energy shift Physics::Atomic Physics Atomic physics 010306 general physics Quantum Physics (quant-ph) |
| Zdroj: | Physical review letters. 123(23) |
| ISSN: | 1079-7114 |
| Popis: | 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 exceeding 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. Comment: 7+5 pages, 4+2 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|