|
related topics |
{information, entropy, channel} |
{states, state, optimal} |
{let, theorem, proof} |
{measurement, state, measurements} |
{state, states, entangled} |
{entanglement, phys, rev} |
{equation, function, exp} |
{time, wave, function} |
|
Estimating the spectrum of a density matrix with LOCC
Manuel A. Ballester
abstract: The problem of estimating the spectrum of a density matrix is considered.
Other problems, such as bipartite pure state entanglement, can be reduced to
spectrum estimation. A local operations and classical communication (LOCC)
measurement strategy is shown which is asymptotically optimal. This means that,
for a very large number of copies, it becomes unnecessary to perform collective
measurements which should be more difficult to implement in practice.
- oai_identifier:
- oai:arXiv.org:quant-ph/0506197
- categories:
- quant-ph
- comments:
- 12 pages, uses iopart.cls and iopart10.clo. Improved version. v3:
Reference updated, added journal reference
- doi:
- 10.1088/0305-4470/39/7/009
- arxiv_id:
- quant-ph/0506197
- journal_ref:
- J. Phys. A: Math. Gen. 39 (2006) 1645-1656
- created:
- 2005-06-23
- updated:
- 2006-02-01
Full article ▸
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