|
related topics |
{states, state, optimal} |
{bell, inequality, local} |
{state, states, entangled} |
{particle, mechanics, theory} |
{state, phys, rev} |
{observables, space, algebra} |
{key, protocol, security} |
|
Quantum cloning without signaling
Nicolas Gisin
abstract: Perfect Quantum Cloning Machines (QCM) would allow to use quantum nonlocality
for arbitrary fast signaling. However perfect QCM cannot exist. We derive a
bound on the fidelity of QCM compatible with the no-signaling constraint. This
bound equals the fidelity of the Bu\v{z}ek-Hillery QCM.
- oai_identifier:
- oai:arXiv.org:quant-ph/9801005
- categories:
- quant-ph
- doi:
- 10.1016/S0375-9601(98)00170-4
- arxiv_id:
- quant-ph/9801005
- journal_ref:
- Phys.Lett. A242 (1998) 1-3
- created:
- 1998-01-06
Full article ▸
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