Work fluctuations in bosonic Josephson junctions
| Autor: | R. G. Lena, G. De Chiara, G. M. Palma |
|---|---|
| Přispěvatelé: | Lena, R, Palma, G, De Chiara, G |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Josephson effect
Population FOS: Physical sciences 01 natural sciences Settore FIS/03 - Fisica Della Materia 010305 fluids & plasmas Fock space symbols.namesake quant-ph Ultracold atom Quantum mechanics 0103 physical sciences 010306 general physics education Physics Condensed Matter::Quantum Gases Quantum Physics education.field_of_study Optimal control Atomic and Molecular Physics and Optics Quantum Gases (cond-mat.quant-gas) symbols Probability distribution Condensed Matter - Quantum Gases Hamiltonian (quantum mechanics) Quantum Physics (quant-ph) cond-mat.quant-gas |
| Zdroj: | Lena, R G, Palma, G M & Chiara, G D 2016, ' Work Fluctuations in Bosonic Josephson Junctions ', Physical Review A (Atomic, Molecular, and Optical Physics), vol. 93, no. 5, 053618 . https://doi.org/10.1103/PhysRevA.93.053618 Physical review. A 93 (2016). doi:10.1103/PhysRevA.93.053618 info:cnr-pdr/source/autori:Lena R.G.; Palma G.M.; De Chiara G./titolo:Work fluctuations in bosonic Josephson junctions/doi:10.1103%2FPhysRevA.93.053618/rivista:Physical review. A/anno:2016/pagina_da:/pagina_a:/intervallo_pagine:/volume:93 |
| DOI: | 10.1103/PhysRevA.93.053618/apsxml |
| Popis: | We calculate the first two moments and full probability distribution of the work performed on a system of bosonic particles in a two-mode Bose-Hubbard Hamiltonian when the self-interaction term is varied instantaneously or with a finite-time ramp. In the instantaneous case, we show how the irreversible work scales differently depending on whether the system is driven to the Josephson or Fock regime of the bosonic Josephson junction. In the finite-time case, we use optimal control techniques to substantially decrease the irreversible work to negligible values. Our analysis can be implemented in present-day experiments with ultracold atoms and we show how to relate the work statistics to that of the population imbalance of the two modes. Comment: 9 pages, 8 figures. Published version. Comments are welcome! |
| Databáze: | OpenAIRE |
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