Detecting the work statistics through Ramsey-like interferometry

Laura Mazzola*, Gabriele De Chiara, Mauro Paternostro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)
214 Downloads (Pure)


Out-of-equilibrium statistical mechanics is attracting considerable interest due to the recent advances in the control and manipulations of systems at the quantum level. Recently, an interferometric scheme for the detection of the characteristic function of the work distribution following a time-dependent process has been proposed [L. Mazzola et al., Phys. Rev. Lett. 110 (2013) 230602]. There, it was demonstrated that the work statistics of a quantum system undergoing a process can be reconstructed by effectively mapping the characteristic function of work on the state of an ancillary qubit. Here, we expand that work in two important directions. We first apply the protocol to an interesting specific physical example consisting of a superconducting qubit dispersively coupled to the field of a microwave resonator, thus enlarging the class of situations for which our scheme would be key in the task highlighted above. We then account for the interaction of the system with an additional one (which might embody an environment), and generalize the protocol accordingly.

Original languageEnglish
Article number1461007
Number of pages12
JournalInternational Journal of Quantum Information
Issue number2
Publication statusPublished - 29 Apr 2014
Event6th Conference on Italian Quantum Information Science (IQIS) - Como, Italy
Duration: 24 Sep 201326 Sep 2013


  • Work statistics
  • interferometry
  • matter-light interaction


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