Starts 26 Oct 2022 14:30
Ends 26 Oct 2022 15:30
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CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Quantum information thermodynamics with spins in diamond
Vitual Seminar
via Zoom
Nicole Fabbri
(CNR-INO, LENS)
Abstract:
Spin systems in diamond devices may disclose new possibilities for exploring how thermodynamics operates at small scales, where fluctuations play a paramount role, and quantum features show up.
I will show how we have realized an autonomous dissipative Maxwell demon with a spin qutrit formed by a Nitrogen-Vacancy (NV) center in diamond at room temperature subject to a feedback-controlled dissipative dynamics, and investigated its non-Gibbsian energy fluctuations [1].
We have also exploited the NV spin platform to capture the effect of quantum coherence. We have experimentally quantified the contribution to non-equilibrium entropy production that stems from the quantum coherence content in the initial state [3]. In the case of a unitary dynamics, we also explored the non-classicality of the whole quantum process, by measuring negative values of the Margenau-Hill quasiprobability (MHQ) distribution of work [3]. In correspondence of peaks of negativity, we show work extraction beyond the classical case.
I will show how we have realized an autonomous dissipative Maxwell demon with a spin qutrit formed by a Nitrogen-Vacancy (NV) center in diamond at room temperature subject to a feedback-controlled dissipative dynamics, and investigated its non-Gibbsian energy fluctuations [1].
We have also exploited the NV spin platform to capture the effect of quantum coherence. We have experimentally quantified the contribution to non-equilibrium entropy production that stems from the quantum coherence content in the initial state [3]. In the case of a unitary dynamics, we also explored the non-classicality of the whole quantum process, by measuring negative values of the Margenau-Hill quasiprobability (MHQ) distribution of work [3]. In correspondence of peaks of negativity, we show work extraction beyond the classical case.
[1]S. Hernández-Gómez, S. Gherardini, N. Staudenmaier, F. Poggiali, M.Campisi, A. Trombettoni, F. S. Cataliotti, P. Cappellaro, N. Fabbri,“Autonomous dissipative Maxwell's demon in a diamond spin qutrit”PRXQuantum 3, 020329 (2022)
[2]S. Hernández-Gómez, S. Gherardini, A. Belenchia, A. Trombettoni, M.Paternostro, N. Fabbri, “Experimental signature of initial quantumcoherence on entropy production”, arXiv:2208.01782
[3]S. Hernández-Gómez, S. Gherardini, A. Belenchia, M. Lostaglio, A.Levy, N. Fabbri, “Experimental assessment of non-classicality in asolid-state spin qutrit”, arXiv:2207.12960