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Title

Employing circuit QED to measure non-equilibrium work fluctuations

AuthorsCampisi, Michele; Blattmann, Ralf; Kohler, Sigmund ; Zueco, David; Hänggi, Peter
Issue Date2013
PublisherInstitute of Physics Publishing
CitationNew Journal of Physics 15: 105028 (2013)
AbstractWe study an interferometric method for measuring the statistics of work performed on a driven quantum system, which has been put forward recently (Dorner et al 2013 Phys. Rev. Lett. 110 230601, Mazzola et al 2013 Phys. Rev. Lett. 110 230602). This method allows the replacement of two projective measurements of the energy of the driven system with qubit tomography of an ancilla that is appropriately coupled to it. We highlight that this method could be employed to obtain the work statistics of closed as well as open driven system, even in the strongly dissipative regime. We then illustrate an implementation of the method in a circuit QED setup, which allows one to experimentally obtain the work statistics of a parametrically driven harmonic oscillator. Our implementation is an extension of the original method, in which two ancilla-qubits are employed and the work statistics are retrieved through two-qubit state tomography. Our simulations demonstrate the experimental feasibility. © IOP Publishing and Deutsche Physikalische Gesellschaft.
Publisher version (URL)http://dx.doi.org/10.1088/1367-2630/15/10/105028
URIhttp://hdl.handle.net/10261/94257
DOI10.1088/1367-2630/15/10/105028
Identifiersdoi: 10.1088/1367-2630/15/10/105028
issn: 1367-2630
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