Conversion of Thermal Equilibrium States into Superpositions of Macroscopically Distinct States
| Autor: | Mamiko Tatsuta, Akira Shimizu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Thermal equilibrium Quantum Physics Statistical Mechanics (cond-mat.stat-mech) Condensed Matter - Mesoscale and Nanoscale Physics Atomic Physics (physics.atom-ph) Resolution (electron density) Degrees of freedom (physics and chemistry) Zero (complex analysis) FOS: Physical sciences Observable 02 engineering and technology State (functional analysis) 021001 nanoscience & nanotechnology 01 natural sciences Physics - Atomic Physics Magnetization Superposition principle Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology Condensed Matter - Statistical Mechanics |
| Popis: | A simple procedure for obtaining superpositions of macroscopically distinct states is proposed and analyzed. We find that a thermal equilibrium state can be converted into such a state when a single global measurement of a macroscopic observable, such as the total magnetization, is made. This method is valid for systems with macroscopic degrees of freedom and finite (including zero) temperature. The superposition state is obtained with a high (low) probability when the measurement is made with a high (low) resolution. We find that this method is feasible in an experiment. 24 pages |
| Databáze: | OpenAIRE |
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