A Single Trapped Ion as a Time-Dependent Harmonic Oscillator

Details A Single Trapped Ion as a Time-Dependent Harmonic Oscillator A Single Trapped Ion as a Time-Dependent Harmonic Oscillator

2007-04-02

arxiv.org/abs/0704.0135v2

Phys. Rev. A 76, 052105 (2007)

Physics

Quantum Physics

5 pages (two-column format), no figures, added introductory material, other minor content revisions

Scientific paper

10.1103/PhysRevA.76.052105

We show how a single trapped ion may be used to test a variety of important physical models realized as time-dependent harmonic oscillators. The ion itself functions as its own motional detector through laser-induced electronic transitions. Alsing et al. [Phys. Rev. Lett. 94, 220401 (2005)] proposed that an exponentially decaying trap frequency could be used to simulate (thermal) Gibbons-Hawking radiation in an expanding universe, but the Hamiltonian used was incorrect. We apply our general solution to this experimental proposal, correcting the result for a single ion and showing that while the actual spectrum is different from the Gibbons-Hawking case, it nevertheless shares an important experimental signature with this result.

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