Experimental signature of initial quantum coherence on entropy production
Year: 2023
Authors: Hernandez Gomez S.; Gherardini S.; Belenchia A.; Trombettoni A.; Paternostro M.; Fabbri N.
Autors Affiliation: Univ Firenze, European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, Italy; Univ Firenze, Dipartimento Fis & Astron, I-50019 Sesto Fiorentino, Italy; Ist Nazl Ott Consiglio Nazl Ric CNR INO, I-50019 Sesto Fiorentino, Italy; MIT, Res Lab Elect, Cambridge, MA 02139 USA; Ist Nazl Ott Consiglio Nazl Ric CNR INO, Area Sci Pk, I-34149 Trieste, Italy; Eberhard Karls Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany; Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, North Ireland; Univ Trieste, Dept Phys, Str Costiera 11, I-34151 Trieste, Italy; SISSA, Via Bonomea 265, I-34136 Trieste, Italy; Ist Nazl Fis Nucl, Sez Trieste, Via Bonomea 265, I-34136 Trieste, Italy; IOM DEMOCRITOS Simulat Ctr, CNR, Via Bonomea 265, Trieste, Italy.
Abstract: We report on the experimental quantification of the contribution to non-equilibrium entropy production stemming from the quantum coherence content in the initial state of a qubit exposed to both coherent driving and dissipation. Our experimental demonstration builds on the exquisite experimental control of the spin state of a nitrogen-vacancy defect in diamond and is underpinned, theoretically, by the formulation of a generalized fluctuation theorem designed to track the effects of quantum coherence. Our results provide significant evidence of the possibility to pinpoint the genuinely quantum mechanical contributions to the thermodynamics of non-equilibrium quantum processes in an open quantum systems scenario.
Journal/Review: NPJ QUANTUM INFORMATION
Volume: 9 Pages from: 86-1 to: 86-6
More Information: We acknowledge support from the European Unionīs Horizon 2020 FET-Open project TEQ (766900), the Horizon Europe EIC Pathfinder project QuCoM (Grant Agreement No. 101046973), the Leverhulme Trust Research Project Grant UltraQuTe (grant RGP-2018-266), the Royal Society Wolfson Fellowship (RSWF/R3/183013), the UK EPSRC (grant EP/T028424/1), the Department for the Economy Northern Ireland under the US-Ireland R & D Partnership Programme, the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) project number BR 5221/4-1, the MISTI Global Seed Funds MIT-FVG Collaboration Grant “Non-Equilibrium Thermodynamics of Dissipative Quantum Systems (NETDQS)”, the Blanceflor Foundation through the project “The theRmodynamics behInd thE meaSuremenT postulate of quantum mEchanics (TRIESTE)”, the CNR-FOE-LENS-2020, the Horizon Europe RIA project MUQUABIS GA n. 101070546, and the PNRR MUR project PE0000023-NQSTI. We also acknowledge support from the European Unionīs Next Generation EU Programme with the I- PHOQS Infrastructure IR0000016 ID D2B8D520 CUP B53C22001750006 “Integrated infrastructure initiative in Photonic and Quantum Sciences”, and from Fondazione CR Firenze through the SALUS project.KeyWords: Quantum coherence, Entropy production, Open quantum systems, Nitrogen-vacancy defect in diamond, End-point measurement schemeDOI: 10.1038/s41534-023-00738-0Citations: 3data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-20References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here