Autonomous Dissipative Maxwell?s Demon in a Diamond Spin Qutrit

Anno: 2022

Autori: Hernandez-Gomez S.; Gherardini S.; Staudenmaier N.; Poggiali F.; Campisi M.; Trombettoni A.; Cataliotti F.S.; Cappellaro P.; Fabbri N.

Affiliazione autori: European Laboratory for Non-linear Spectroscopy (LENS), Universita di Firenze, Sesto Fiorentino, 50019, Italy; Dipartimento di Fisica e Astronomia, Universita di Firenze, Sesto Fiorentino, 50019, Italy; Istituto Nazionale di Ottica Del Consiglio Nazionale Delle Ricerche (CNR-INO), Sesto Fiorentino, 50019, Italy; Scuola Internazionale Superiore di Studi Avanzati (SISSA), Trieste, 34136, Italy; Istituto Nazionale di Ottica del Consiglio Nazionale Delle Ricerche (CNR-INO), Trieste, 34149, Italy; NEST, Istituto Nanoscienze-CNR, Scuola Normale Superiore, Pisa, 56127, Italy; CNR-IOM DEMOCRITOS Simulation Center, Trieste, 34136, Italy; Department of Nuclear Science and Engineering and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, Massachusetts 02139, USA, United States; Institute for Quantum Optics, Ulm University, Ulm, 89081, Germany

Abstract: Engineered dynamical maps combining coherent and dissipative transformations of quantum states with quantum measurements have demonstrated a number of technological applications, and promise to be a crucial tool in quantum thermodynamic processes. Here we exploit the control on the effective open spin qutrit dynamics of a nitrogen-vacancy center to experimentally realize an autonomous feedback process (Maxwell?s demon) with tunable dissipative strength. The feedback is enabled by random measurement events that condition the subsequent dissipative evolution of the qutrit. The efficacy of the autonomous Maxwell?s demon is quantified by means of a generalized Sagawa-Ueda-Tasaki relation for dissipative dynamics. To achieve this, we experimentally characterize the fluctuations of the energy exchanged between the system and its the environment. This opens the way to the implementation of a new class of Maxwell?s demons, which could be useful for quantum sensing and quantum thermodynamic devices.

Giornale/Rivista: PRX QUANTUM

Volume: 3 (2)      Da Pagina: 020329-1  A: 020329-15

Maggiori informazioni: We gratefully thank Massimo Inguscio for enlightening discussions. We acknowledge financial support from the MISTI Global Seed Funds MIT-FVG Collaboration Grant and from the European Union´s 2020 research and innovation program Qombs Project (FET Flagship on Quantum Technologies Grant No. 820419). S.G. also acknowledges the Blanceflor Foundation for financial support through the project entitled “The Thermodynamics behind the Measurement Postulate of Quantum Mechanics” (TRIESTE). S.H.G. acknowledges the financial support from CNRFOE-LENS-2020.
DOI: 10.1103/PRXQuantum.3.020329