Phys. Rev. Lett. 94, 180602 (2005) [4 pages]Experimental Test of the Fluctuation Theorem for a Driven Two-Level System with Time-Dependent RatesReceived 28 February 2005; published 12 May 2005 A single defect center in diamond periodically excited by a laser is shown to provide a simple realization for a system obeying a fluctuation theorem for nonthermal noise. The distribution of these fluctuations is distinctly non-Gaussian, which has also been verified by numerical calculation. For driving protocols symmetric under time reversal a more restricted form of the theorem holds, which is also known from entropy fluctuations caused by thermal noise. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.180602
DOI:
10.1103/PhysRevLett.94.180602
PACS:
05.40.-a
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