Entanglement of electron spins of noninteracting electron gases

Sangchul Oh, Jaewan Kim

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Based on the Green's function approach, the entanglement of electron spins in many-body systems was investigated. The two-particle density matrix of a noninteracting electron gas is analyzed and its two-spin density matrix as a Werner state was identified. Entanglement measurements, a classical correlation, mutual information, and a pair distribution function of two electrons at zero and finite temperatures was calculated. The changes of entanglement measures were found to be proportional to T2 at low temperatures.

Original languageEnglish
Pages (from-to)054305-1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume69
Issue number5 B
DOIs
Publication statusPublished - 1 May 2004
Externally publishedYes

Fingerprint

electron spin
electron gas
Green's functions
distribution functions
electrons
temperature

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

Cite this

Entanglement of electron spins of noninteracting electron gases. / Oh, Sangchul; Kim, Jaewan.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 69, No. 5 B, 01.05.2004, p. 054305-1.

Research output: Contribution to journalArticle

@article{680623a37627496dba79107bdbfd3d8f,
title = "Entanglement of electron spins of noninteracting electron gases",
abstract = "Based on the Green's function approach, the entanglement of electron spins in many-body systems was investigated. The two-particle density matrix of a noninteracting electron gas is analyzed and its two-spin density matrix as a Werner state was identified. Entanglement measurements, a classical correlation, mutual information, and a pair distribution function of two electrons at zero and finite temperatures was calculated. The changes of entanglement measures were found to be proportional to T2 at low temperatures.",
author = "Sangchul Oh and Jaewan Kim",
year = "2004",
month = "5",
day = "1",
doi = "10.1103/PhysRevA.69.054305",
language = "English",
volume = "69",
pages = "054305--1",
journal = "Physical Review A - Atomic, Molecular, and Optical Physics",
issn = "1050-2947",
publisher = "American Physical Society",
number = "5 B",

}

TY - JOUR

T1 - Entanglement of electron spins of noninteracting electron gases

AU - Oh, Sangchul

AU - Kim, Jaewan

PY - 2004/5/1

Y1 - 2004/5/1

N2 - Based on the Green's function approach, the entanglement of electron spins in many-body systems was investigated. The two-particle density matrix of a noninteracting electron gas is analyzed and its two-spin density matrix as a Werner state was identified. Entanglement measurements, a classical correlation, mutual information, and a pair distribution function of two electrons at zero and finite temperatures was calculated. The changes of entanglement measures were found to be proportional to T2 at low temperatures.

AB - Based on the Green's function approach, the entanglement of electron spins in many-body systems was investigated. The two-particle density matrix of a noninteracting electron gas is analyzed and its two-spin density matrix as a Werner state was identified. Entanglement measurements, a classical correlation, mutual information, and a pair distribution function of two electrons at zero and finite temperatures was calculated. The changes of entanglement measures were found to be proportional to T2 at low temperatures.

UR - http://www.scopus.com/inward/record.url?scp=3042750208&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3042750208&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.69.054305

DO - 10.1103/PhysRevA.69.054305

M3 - Article

AN - SCOPUS:3042750208

VL - 69

SP - 54305

EP - 54301

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 5 B

ER -