Dynamical evolution of an inverted spin ensemble in a cavity: Inhomogeneous broadening as a stabilizing mechanism

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Brian Julsgaard and Klaus Mølmer


URL: http://link.aps.org/doi/10.1103/PhysRevA.86.063810
DOI: 10.1103/PhysRevA.86.063810
PACS: 42.50.Pq, 42.50.Ct, 42.50.Nn

We study the evolution of an inverted spin ensemble coupled to a cavity. While the inversion itself presents an inherent instability in the system, the inhomogeneous broadening of spin-resonance frequencies provides a stabilizing mechanism. The detailed behavior of mean values and variances of the spin components and the cavity field is accounted for under both stable and unstable conditions.