Large Collective Lamb Shift of Two Distant Superconducting Artificial Atoms
Artikel i vetenskaplig tidskrift, 2019

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.

Författare

P. Y. Wen

National Tsing Hua University

K. -T. Lin

National Taiwan University

Anton Frisk Kockum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

B. Suri

Indian Institute of Science

H. Ian

University of Macau

J. C. Chen

National Tsing Hua University

S. Y. Mao

National Chiao Tung University Taiwan

C. C. Chiu

National Tsing Hua University

Per Delsing

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantteknologi

F. Nori

University of Michigan

RIKEN

G. -D. Lin

National Taiwan University

I. -C. Hoi

National Tsing Hua University

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 122 23 233602

Ämneskategorier

Subatomär fysik

Atom- och molekylfysik och optik

Annan fysik

DOI

10.1103/PhysRevLett.123.233602

PubMed

31868475

Mer information

Senast uppdaterat

2020-01-16