title: Quantum Szilard engine.
abstract: The Szilard engine (SZE) is the quintessence of Maxwell's demon, which can extract the work from a heat bath by utilizing information. We present the first complete quantum analysis of the SZE, and derive an analytic expression of the quantum-mechanical work performed by a quantum SZE containing an arbitrary number of molecules, where it is crucial to regard the process of insertion or removal of a wall as a legitimate thermodynamic process. We find that more (less) work can be extracted from the bosonic (fermionic) SZE due to the indistinguishability of identical particles.
authors.affiliation: Department of Physics Education, Pusan National University, Busan, Korea.
authors.forename: Sang Wook
authors.initials: SW
authors.lastname: Kim
authors.forename: Takahiro
authors.initials: T
authors.lastname: Sagawa
authors.forename: Simone
authors.initials: S
authors.lastname: De Liberato
authors.forename: Masahito
authors.initials: M
authors.lastname: Ueda