Direct single-shot observation of millimeter-wave superradiance in Rydberg-Rydberg transitions
Author(s)
Zhou, Yan; Yelin, Susanne F.; Grimes, David Darrah; Coy, Stephen; Barnum, Timothy James; Field, Robert W; ... Show more Show less
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We have directly detected millimeter-wave (mm-wave) free-space superradiant emission from Rydberg states (principal quantum number n∼30) of barium atoms in single-shot experiments. We trigger the cooperative effects with a weak initial pulse and detect the time-dependent amplitude and phase of the emitted radiation with single-shot sensitivity and 20 ps time resolution. This allows measurement and shot-by-shot analysis of the statistical distribution of decay rates, time delays, and time-dependent frequency shifts. Cooperative line shifts and decay rates are observed that exceed the 250 kHz Doppler width by a factor of 20 and the 50 Hz spontaneous emission rate by a factor of 10⁵.
Date issued
2017-04Department
Massachusetts Institute of Technology. Department of ChemistryJournal
Physical Review A
Publisher
American Physical Society
Citation
Grimes, David D. et al. “Direct Single-Shot Observation of Millimeter-Wave Superradiance in Rydberg-Rydberg Transitions.” Physical Review A 95, 4 (April 2017): 043818 ©2017 American Physical Society
Version: Final published version
ISSN
2469-9926
2469-9934