Coherent single-atom superradiance
- Authors
- Kim, Junki; Yang, Daeho; Oh, Seung-hoon; An, Kyungwon
- Issue Date
- Feb-2018
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Citation
- SCIENCE, v.359, no.6376, pp.662 - 665
- Journal Title
- SCIENCE
- Volume
- 359
- Number
- 6376
- Start Page
- 662
- End Page
- 665
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/87336
- DOI
- 10.1126/science.aar2179
- ISSN
- 0036-8075
- Abstract
- Superradiance is a quantum phenomenon emerging in macroscopic systems whereby correlated single atoms cooperatively emit photons. Demonstration of controlled collective atom-field interactions has resulted from the ability to directly imprint correlations with an atomic ensemble. Here we report cavity-mediated coherent single-atom superradiance: Single atoms with predefined correlation traverse a high-quality factor cavity one by one, emitting photons cooperatively with the N atoms that have already gone through the cavity (N represents the number of atoms). Enhanced collective photoemission of N-squared dependence was observed even when the intracavity atom number was less than unity. The correlation among single atoms was achieved by nanometer-precision position control and phase-aligned state manipulation of atoms by using a nanohole-array aperture. Our results demonstrate a platform for phase-controlled atom-field interactions.
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