6 papers
Two-stroke Quantum Measurement Heat Engine
M. Sahnawaz Alam, B. Prasanna Venkatesh
We propose and analyze the theoretical model for a two-stroke quantum heat engine with one of the heat baths replaced by a non-selective quantum measurement. We show that the engin…
Quantum Statistical Enhancement of the Collective Performance of Multiple Bosonic Engines
Gentaro Watanabe, B. Prasanna Venkatesh, Peter Talkner +2
We consider an ensemble of indistinguishable quantum machines and show that quantum statistical effects can give rise to a genuine quantum enhancement of the collective thermodynam…
Generalized energy measurements and quantum work compatible with fluctuation theorems
Kosuke Ito, Peter Talkner, B. Prasanna Venkatesh +1
The probability densities of work that can be exerted on a quantum system initially staying in thermal equilibrium are constrained by the fluctuation relations of Jarzynski and Cro…
Collective effects in Casimir-Polder forces
Kanupriya Sinha, B. Prasanna Venkatesh, Pierre Meystre
We study cooperative phenomena in the fluctuation-induced forces between a surface and a system of neutral two-level quantum emitters prepared in a coherent collective state, showi…
Nonlinear Phenomena of Ultracold Atomic Gases in Optical Lattices: Emergence of Novel Features in Extended States
Gentaro Watanabe, B. Prasanna Venkatesh, Raka Dasgupta
The system of a cold atomic gas in an optical lattice is governed by two factors: nonlinearity originating from the interparticle interaction, and the periodicity of the system set…
Attraction-induced dynamical stability of a Bose-Einstein condensate in a nonlinear lattice
Raka Dasgupta, B. Prasanna Venkatesh, Gentaro Watanabe
We study multiple-period Bloch states of a Bose-Einstein condensate with spatially periodic interactomic interaction. Solving the Gross-Pitaevskii equation for the continuum model,…