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Physical Review Letters

Coherent Transient Multiphoton Scattering in a Resonant Two-Level System

Naohiro Tanno, Kazuhide Ohkawara, Humio Inaba

Published May 11, 1981• 23 citations
Publisher

Abstract

We report theoretically and experimentally a new class of multiphoton scattering in the coherent transient regime associated with a resonant two-level system that is excited by two noncollinear laser beams. We find that its excitation, described by the nonperturbative solutions for the optical Bloch equation, gives rise to a detectable photon scattering of up to 27th-order wave-vector coupling in resonant sodium vapor.

DOI
10.1103/physrevlett.46.1282

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Coherent superposition of emitted and resonantly scattered photons from a two-level system in a cavity driven by an even-πππ pulse
We examine the nature and quantum satistics of a multiphoton bunch generated under resonant excitation by even-πππ pulses of a charged quantum dot in a cavity. Experiments with Rabi oscillations in time-resolved photoluminescence, varying pulse duration, and cavity mode detuning show that this multiphoton state is a coherent superposition of emitted photons and resonantly scattered laser photons. The developed model incorporates both resonant scattering and re-excitation mechanisms, allowing us to describe the quantum statistics of the multiphoton state, which is controlled by the coupling between the quantum dot and optical modes in the cavity.
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