0703243v2

related topics
{entanglement, phys, rev}
{operator, operators, space}
{temperature, thermal, energy}
{let, theorem, proof}
{energy, state, states}
{states, state, optimal}
{classical, space, random}
{time, decoherence, evolution}
{field, particle, equation}
{photon, photons, single}
{information, entropy, channel}
{cavity, atom, atoms}

Ensemble averaged entanglement of two-particle states in Fock space

Jan Naudts, Tobias Verhulst

abstract: Recent results, extending the Schmidt decomposition theorem to wavefunctions of identical particles, are reviewed. They are used to give a definition of reduced density operators in the case of two identical particles. Next, a method is discussed to calculate time averaged entanglement. It is applied to a pair of identical electrons in an otherwise empty band of the Hubbard model, and to a pair of bosons in the the Bose-Hubbard model with infinite range hopping. The effect of degeneracy of the spectrum of the Hamiltonian on the average entanglement is emphasised.

oai_identifier:
oai:arXiv.org:quant-ph/0703243
categories:
quant-ph
comments:
19 pages Latex, changed title, references added in the conclusions
doi:
10.1103/PhysRevA.75.062104
arxiv_id:
quant-ph/0703243
created:
2007-03-26
updated:
2007-04-03

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