Details

Autor(en) / Beteiligte

• Kim, Junki
• Yang, Daeho
• Oh, Seung-Hoon
• An, Kyungwon

Titel

Coherent single-atom superradiance

Ist Teil von

• Science (American Association for the Advancement of Science), 2018-02, Vol.359 (6376), p.662-666

Ort / Verlag

United States: The American Association for the Advancement of Science

Erscheinungsjahr

2018

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• 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 atoms that have already gone through the cavity ( represents the number of atoms). Enhanced collective photoemission of -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.