|
| related topics |
| {entanglement, phys, rev} |
| {time, decoherence, evolution} |
| {particle, mechanics, theory} |
| {information, entropy, channel} |
| {bell, inequality, local} |
| {state, states, entangled} |
| {time, wave, function} |
| {energy, gaussian, time} |
| {temperature, thermal, energy} |
| {operator, operators, space} |
| {cos, sin, state} |
| {field, particle, equation} |
|
Decoherence of entangled kaons and its connection to entanglement
measures
Reinhold A. Bertlmann, Katharina Durstberger, Beatrix C. Hiesmayr
abstract: We study the time evolution of the entangled kaon system by considering the
Liouville - von Neumann equation with an additional term which allows for
decoherence. We choose as generators of decoherence the projectors to the
2-particle eigenstates of the Hamiltonian. Then we compare this model with the
data of the CPLEAR experiment and find in this way an upper bound on the
strength $\lambda$ of the decoherence. We also relate $\lambda$ to an effective
decoherence parameter $\zeta$ considered previously in literature. Finally we
discuss our model in the light of different measures of entanglement, i.e. the
von Neumann entropy $S$, the entanglement of formation $E$ and the concurrence
$C$, and we relate the decoherence parameter $\zeta$ to the loss of
entanglement: $1 - E$.
- oai_identifier:
- oai:arXiv.org:quant-ph/0209017
- categories:
- quant-ph hep-ph
- comments:
- comments and references added, 18 pages, 1 figure
- doi:
- 10.1103/PhysRevA.68.012111
- arxiv_id:
- quant-ph/0209017
- journal_ref:
- Phys.Rev. A68 (2003) 012111
- created:
- 2002-09-02
- updated:
- 2003-05-28
Full article ▸
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