StrongCoupling_PRL_rev3_1.pdf (1.03 MB)
Strong coupling of a single ion to an optical cavity
journal contribution
posted on 2023-06-09, 19:50 authored by Hiroki TakahashiHiroki Takahashi, Ezra Kassa, Costas Marios Christoforou, Matthias KellerMatthias KellerStrong coupling between an atom and an electromagnetic resonator is an important condition in cavity quantum electrodynamics (CQED). While strong coupling in various physical systems has been achieved so far, it remained elusive for single atomic ions. Here we achieve a coupling strength of 2pix(12.3+/-0.1)MHz between a single 40Ca+ ion and an optical cavity, exceeding both atomic and cavity decay rates which are 2pix11.5 and 2pix(4.1+/-0.1)MHz respectively. We use cavity assisted Raman spectroscopy to precisely characterize the ion-cavity coupling strength and observe a spectrum featuring the normal mode splitting in the cavity transmission due to the ion-cavity interaction. Our work paves the way towards new applications of CQED utilizing single trapped ions in the strong coupling regime for quantum optics and quantum technologies.
Funding
UK Quantum Technology Hub: NQIT-Networked Quantum Information Technologies; G1503; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/M013243/1
History
Publication status
- Published
File Version
- Accepted version
Journal
Physical Review Letters (PRL)ISSN
0031-9007Publisher
American Physical SocietyExternal DOI
Issue
1Volume
124Article number
a013602Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Sussex Centre for Quantum Technologies Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-12-04First Open Access (FOA) Date
2019-12-04First Compliant Deposit (FCD) Date
2019-12-03Usage metrics
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