Work Fluctuations in Bosonic Josephson Junctions
arXiv:1603.05918 · doi:10.1103/PhysRevA.93.053618
Abstract
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.
arXiv comment9 pages, 8 figures. Published version. Comments are welcome!
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Cited by in corpus (10)
- Crossing Over from Attractive to Repulsive Interactions in a Tunneling Bosonic Josephson Junction
- Non-Equilibrium Thermodynamics of Harmonically Trapped Bosons
- Group-theoretical approach to the calculation of quantum work distribution
- Loschmidt Amplitude and Work Distribution in Quenches of the Sine-Gordon Model
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