15 February 2010 Coherently controlled quantum emitters in cavities
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Abstract
Semiconductor nanostructures such as quantum dots (QDs) have offered unique opportunities to investigate quantum optical effects in solid-state systems. These include quantum interference, Rabi oscillations, as well as photon antibunching, and were previously observable only in isolated atoms or ions. In addition, QDs can be integrated into optical microcavities, making them attractive for applications in quantum information processing and high efficiency quantum light sources. Despite much progress towards these goals, one area that was little explored is coherent control of such solid-state quantum emitters in cavities. The main technical hurdle lies in overcoming the laser background scattering. By using a sample structure in which QDs are embedded in a planar Fabry-Perot cavity and by using an orthogonal excitation geometry, we have achieved a nearly complete elimination of laser background scattering. This in turn allows us to show resonantly controlled light emission of quantum dots in the cavity including (a) Rabi flopping using pulse control, (b) direct observation of Mollow triplets in the frequency domain, and (c) simultaneously measured first-order and second order photon-photon correlations.
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A. Muller, E. B. Flagg, D. G. Deppe, G. J. Salamo, C. K. Shih, "Coherently controlled quantum emitters in cavities", Proc. SPIE 7611, Advances in Photonics of Quantum Computing, Memory, and Communication III, 76110O (15 February 2010); doi: 10.1117/12.847066; https://doi.org/10.1117/12.847066
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