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Quasieigenstate Coalescence in an Atom-Cavity Quantum Composite
Abstract
We report the first direct observation of an exceptional point (EP) in an open quantum composite of a single atom and a high-Q cavity mode. The atom-cavity coupling constant was made a continuous variable by utilizing the multisublevel nature of a single rubidium atom when it is optimally coupled to the cavity mode. The spectroscopic properties of quasieigenstates of the atom-cavity composite were experimentally investigated near the EP. Branch-point singularity of quasieigenenergies was observed and its 4pi symmetry was demonstrated. Consequently, the cavity transmission at the quasieigenstate was observed to exhibit a critical behavior at the EP.
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Cites
Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
Wallraff, A., Schuster, D. I., Blais, A., Frunzio, L., Huang, R. S., Majer, J., Kumar, S., Girvin, S. M., & Schoelkopf, R. J. (2004) · Nature · doi:10.1038/nature02851 · Cited by 3,796
Deterministic Single-Photon Source for Distributed Quantum Networking
Kuhn, A., Hennrich, M., & Rempe, G. (2002) · Physical Review Letters · doi:10.1103/physrevlett.89.067901 · Cited by 859
Cited by
Exceptional points enhance sensing in an optical microcavity
Chen, W., Kaya Özdemir, Ş., Zhao, G., Wiersig, J., & Yang, L. (2017) · Nature · doi:10.1038/nature23281 · Cited by 2,084
The physics of exceptional points
Heiss, W. D. (2012) · Journal of Physics A: Mathematical and Theoretical · doi:10.1088/1751-8113/45/44/444016 · Cited by 1,438
Wiersig, J. (2014) · Physical Review Letters · doi:10.1103/physrevlett.112.203901 · Cited by 1,049
Yao, S., Song, F., & Wang, Z. (2018) · Physical Review Letters · doi:10.1103/physrevlett.121.136802 · Cited by 933
Observation of non-Hermitian degeneracies in a chaotic exciton-polariton billiard
Gao, T., Estrecho, E., Bliokh, K. Y., Liew, T. C. H., Fraser, M. D., Brodbeck, S., Kamp, M., Schneider, C., Höfling, S., Yamamoto, Y., et al. (2015) · Nature · doi:10.1038/nature15522 · Cited by 614
Metadata
- Authors
- Choi, Y., Kang, S., Lim, S., Kim, W., Kim, J.-R., Lee, J.-H., & An, K.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-04-13
- Volume
- 104
- Issue
- 15
- Pages
- 153601-153601
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2066549507
- Cited by
- 193
- References
- 2
- FWCI
- 2.07
- Type
- journal article
- Language
- en
- Open access
- closed
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- Choi, Y., Kang, S., Lim, S., Kim, W., Kim, J.-R., Lee, J.-H., & An, K. (2010). Quasieigenstate Coalescence in an Atom-Cavity Quantum Composite. Physical Review Letters. https://doi.org/10.1103/physrevlett.104.153601
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