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Scientific article
Open access
English

Entanglement energetics at zero temperature

Published inPhysical review letters, vol. 92, no. 24, 247901
Publication date2004
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.

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Keywords
  • Quantum entanglement
  • Temperature zero K
  • Hamiltonians
  • Harmonic oscillators
  • Quantum system
  • N body system
  • Energetics
Citation (ISO format)
JORDAN, Andrew N., BUTTIKER, Markus. Entanglement energetics at zero temperature. In: Physical review letters, 2004, vol. 92, n° 24, p. 247901. doi: 10.1103/PhysRevLett.92.247901
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Article (Published version)
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Identifiers
ISSN of the journal0031-9007
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