Theory of Steady-State Superradiance
Author | |
Abstract |
<p>In this thesis, I describe the theoretical development of the superradiant laser, or laser in the\ <span style="line-height: 1.6em;">extreme bad-cavity regime. In this regime, the cavity decay rate is much greater than the atomic\ </span><span style="line-height: 1.6em;">dynamics. The atoms emit photons into the cavity mode superradiantly in steady state. We\ </span><span style="line-height: 1.6em;">develop group-theoretic methods that enable us to exactly solve mesoscopic systems with hundreds\ </span><span style="line-height: 1.6em;">of atoms. We demonstrate the synchronization of atomic dipoles in steady-state superradiance.\ </span><span style="line-height: 1.6em;">With this synchronized system, we propose conditional Ramsey spectroscopy which allows us to\ </span><span style="line-height: 1.6em;">observe Ramsey fringes indefinitely, even in the presence of atomic decoherence. Furthermore,\ </span><span style="line-height: 1.6em;">we explore manifestations of synchronization in the quantum realm with two superradiant atomic\ </span><span style="line-height: 1.6em;">ensembles. We show that two such ensembles exhibit a dynamical phase transition from two\ </span><span style="line-height: 1.6em;">disparate oscillators to quantum phase-locked dynamics. Finally, we study the mechanical effect of\ </span><span style="line-height: 1.6em;">the light-atom interaction in the steady-state superradiance. We find efficient many-body cooling\ </span><span style="line-height: 1.6em;">of atoms. The work described in this thesis lays the theoretical foundation for the superradiant\ </span><span style="line-height: 1.6em;">laser and for a potential future of active optical frequency standards.</span></p>
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Year of Publication |
2016
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Degree |
Ph.D.
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Number of Pages |
109
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Date Published |
04-2016
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University |
University of Colorado Boulder
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City |
Boulder, CO
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JILA PI Advisors | |
Minghui_Xu_Thesis.pdf2.77 MB
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Publication Status |