|
| related topics |
| {bell, inequality, local} |
| {state, states, entangled} |
| {alice, bob, state} |
| {theory, mechanics, state} |
| {let, theorem, proof} |
| {measurement, state, measurements} |
| {states, state, optimal} |
| {observables, space, algebra} |
| {vol, operators, histories} |
|
Nonsequential positive-operator-valued measurements on entangled mixed
states do not always violate a Bell inequality
Jonathan Barrett
abstract: We present a local-hidden-variable model for positive-operator-valued
measurements (an LHVPOV model) on a class of entangled generalized Werner
states, thus demonstrating that such measurements do not always violate a
Bell-type inequality. We also show that, in general, if the state $\rho'$ can
be obtained from $\rho$ with certainty by local quantum operations without
classical communication then an LHVPOV model for the state $\rho$ implies the
existence of such a model for $\rho'$.
- oai_identifier:
- oai:arXiv.org:quant-ph/0107045
- categories:
- quant-ph
- comments:
- 4 pages, no figures. Title changed to accord with Phys. Rev. A
version. Journal reference added
- doi:
- 10.1103/PhysRevA.65.042302
- arxiv_id:
- quant-ph/0107045
- journal_ref:
- Phys. Rev. A, 65, 042302 (2002)
- report_no:
- DAMTP-2001-62
- created:
- 2001-07-07
- updated:
- 2002-04-15
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