INO
CNR
vai_a_storia   vai_a_organizzazione   vai_a_sedi   vai_a_personale   Area Riservata
    English English Version  
 
 

Nonequilibrium quantum-heat statistics under stochastic projective measurements

  Articoli su Riviste JCR/ISI  (anno 2018)

Autori:  Gherardini S., Buffoni L., Muller MM., Caruso F., Campisi M., Trombettoni A., Ruffo S

Affiliazione Autori:  [Gherardini, Stefano; Buffoni, Lorenzo; Muller, Matthias M.; Caruso, Filippo; Campisi, Michele] Univ Florence, Dept Phys & Astron, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy. [Gherardini, Stefano; Muller, Matthias M.; Caruso, Filippo] CNR, INO, QSTAR, Via N Carrara 1, I-50019 Sesto Fiorentino, Italy. [Gherardini, Stefano; Muller, Matthias M.; Caruso, Filippo] LENS, Via N Carrara 1, I-50019 Sesto Fiorentino, Italy. [Gherardini, Stefano; Campisi, Michele] INFN, Sez Firenze, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy. [Buffoni, Lorenzo] Univ Florence, Dept Informat Engn, Via S Marta 3, I-50139 Florence, Italy. [Trombettoni, Andrea] CNR, IOM DEMOCRITOS, Simulat Ctr, Via Bonomea 265, I-34136 Trieste, Italy. [Trombettoni, Andrea; Ruffo, Stefano] SISSA, Via Bonomea 265, I-34136 Trieste, Italy. [Trombettoni, Andrea; Ruffo, Stefano] INFN, Sez Trieste, I-34151 Trieste, Italy. [Ruffo, Stefano] CNR, Ist Sistemi Complessi, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy.

Riassunto:  In this paper we aim at characterizing the effect of stochastic fluctuations on the distribution of the energy exchanged by a quantum system with the external environment under sequences of quantum measurements performed at random times. Both quenched and annealed averages are considered. The information about fluctuations is encoded in the quantum-heat probability density function, or equivalently in its characteristic function, whose general expression for a quantum system with arbitrary Hamiltonian is derived. We prove that, when a stochastic protocol of measurements is applied, the quantum Jarzynski equality is obeyed. Therefore, the fluctuation relation is robust against the presence of randomness in the times intervals between measurements. Then, for the paradigmatic case of a two-level system, we analytically characterize the quantum-heat transfer. Particular attention is devoted to the limit of large number of measurements and to the effects caused by the stochastic fluctuations. The relation with the stochastic Zeno regime is also discussed.

Rivista/Giornale:  PHYSICAL REVIEW E
Volume n.:  98 (3)      Pagine da: 032108-1  a: 032108-11
DOI: 10.1103/PhysRevE.98.032108

   *Citazioni: 2
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

Riferimenti visionabili in IsiWeb of Knowledge: (solo per sottoscrittori)
Per visualizzare la scheda dell'articolo su IsiWeb: Clicca qui
Per visualizzare la scheda delle Citazioni dell'articolo su IsiWeb: Clicca qui

INO © Istituto Nazionale di Ottica - Largo Fermi 6, 50125 Firenze | Tel. 05523081 Fax 0552337755 - P.IVA 02118311006     P.E.C.    Info