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Title

Entanglement energetics at zero temperature

Authors
Jordan, Andrew N.
Published in Physical Review Letters. 2004, vol. 92, no. 24, p. 247901
Abstract We show how many-body ground state entanglement information may be extracted from subsystem energy measurements at zero temperature. Generically, the larger the measured energy fluctuations are, the larger the entanglement is. Examples are given with the two-state system and the harmonic oscillator. Comparisons made with recent qubit experiments show that this type of measurement provides another method to quantify entanglement with the environment.
Keywords Quantum entanglementTemperature zero KHamiltoniansHarmonic oscillatorsQuantum systemN body systemEnergetics
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PMID: 15245133
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JORDAN, Andrew N., BUTTIKER, Markus. Entanglement energetics at zero temperature. In: Physical Review Letters, 2004, vol. 92, n° 24, p. 247901. https://archive-ouverte.unige.ch/unige:4194

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Deposited on : 2009-11-30

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