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Published on: November 11, 2013
Hyperradiance by a stream of phase-correlated atomic dipole pairs traversing a high-Q cavity
Junseok Han1, Jinuk Kim1, Seung-Hoon Oh1
1Department of Physics and Astronomy & Institute of Applied Physics, Seoul National University, Seoul, 08826, Korea.
Abstract:
Hyperradiance in which radiation rate exceeds that of superradiance has been theoretically investigated in various coherently-coupled emitter-field systems. In most cases, either proposed setups were experimentally challenging or the mean photon number in a cavity was limited. In this paper, with numerical simulations and analytic calculations, we demonstrate that significant hyperradiance with a large mean photon number can occur in a microlaser system, where pairs of two-level atoms prepared in quantum superposition states traverse a high-Q cavity in the presence of a pump field intersecting the cavity mode. Hyperradiance is induced when the intracavity-pump Rabi frequency is out of phase with respect to the atom-cavity coupling so that the reduction of atomic polarization by the atom-cavity coupling is compensated by the pump Rabi frequency in the steady state to maximize atomic photoemission.
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