12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Vacuum Rabi splitting due to strong coupling of...
View graph of relations

« Back

Vacuum Rabi splitting due to strong coupling of a flux qubit and a coplanar-waveguide resonator

Research output: Contribution to journalJournal article

Published

  • Abdufarrukh A. Abdumalikov
  • Oleg Astafiev
  • Yasunobu Nakamura
  • Yuri A. Pashkin
  • JawShen Tsai
???articleNumber???180502
Journal publication date11/2008
JournalPhysical review b
Journal number18
Volume78
Number of pages4
Pages-
Original languageEnglish

Abstract

We have experimentally studied a superconducting flux qubit strongly coupled to a single mode of a high-quality transmission-type coplanar-waveguide resonator. The qubit-resonator coupling is revealed in the resonator transmission spectrum as a vacuum Rabi splitting. In the dispersive regime the qubit energy levels are spectroscopically probed. We observe a shift in the qubit transition frequency that linearly depends on the number of photons in the resonator, which is attributed to the ac-Zeeman shift. The observations are in agreement with the theoretical predictions.