The Harmonic Quantum Szilárd Engine
arXiv:2011.01180 · doi:10.1119/10.0005946
Abstract
The Szilárd engine is a mechanism (akin to Maxwell's demon) for converting information into energy, which seemingly violates the second law of thermodynamics. Originally a classical thought experiment, it was extended to a quantized treatment by Zurek. Here, we examine a new, elegant model of a quantum Szilárd engine by replacing the traditional rigid box with a harmonic potential, extending the scope of the model. Remarkably, almost all calculations are exact. This article is suitable to students, researchers and educators interested in the conceptual links between information, entropy, and quantum measurement.
arXiv comment16 pages, 5 figures
References in corpus (14)
- Information heat engine: converting information to energy by feedback control
- Experimental realization of a Szilard engine with a single electron
- On-chip Maxwell's demon as an information-powered refrigerator
- A simple model of quantum trajectories
- Observing a quantum Maxwell demon at work
- Extracting work from quantum measurement in Maxwell demon engines
- Experimental rectification of entropy production by a Maxwell's Demon in a quantum system
- Information gain and loss for a quantum Maxwell's demon
- Demon Dynamics: Deterministic Chaos, the Szilard Map, and the Intelligence of Thermodynamic Systems
- Eliminating Ensembles from Equilibrium Statistical Physics: Maxwell's Demon, Szilard's Engine, and Thermodynamics via Entanglement
- Landauer's erasure principle in a squeezed thermal memory
- Landauer's Principle in a Quantum Szilard Engine Without Maxwell's Demon
- Particle in a box with a time-dependent -function potential
- Szilard Engines as Quantum Thermodynamical Systems