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| related topics |
| {let, theorem, proof} |
| {states, state, optimal} |
| {measurement, state, measurements} |
| {key, protocol, security} |
| {state, states, entangled} |
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| {information, entropy, channel} |
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|
A de Finetti representation for finite symmetric quantum states
Robert Koenig, Renato Renner
abstract: Consider a symmetric quantum state on an n-fold product space, that is, the
state is invariant under permutations of the n subsystems. We show that,
conditioned on the outcomes of an informationally complete measurement applied
to a number of subsystems, the state in the remaining subsystems is close to
having product form. This immediately generalizes the so-called de Finetti
representation to the case of finite symmetric quantum states.
- oai_identifier:
- oai:arXiv.org:quant-ph/0410229
- categories:
- quant-ph
- comments:
- 22 pages, LaTeX
- doi:
- 10.1063/1.2146188
- arxiv_id:
- quant-ph/0410229
- journal_ref:
- J. Math. Phys. 46, 122108 (2005)
- created:
- 2004-10-27
Full article ▸
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