|
| related topics |
| {state, phys, rev} |
| {states, state, optimal} |
| {alice, bob, state} |
| {photon, photons, single} |
| {qubit, qubits, gate} |
| {state, states, entangled} |
| {bell, inequality, local} |
|
Quantum partial teleportation as optimal cloning at a distance
Radim Filip
abstract: We propose a feasible scheme of conditional quantum partial teleportation of
a qubit as optimal asymmetric cloning at a distance. In this scheme, Alice
preserves one imperfect clone whereas other clone is teleported to Bob.
Fidelities of the clones can be simply controlled by an asymmetry in Bell-state
measurement. The optimality means that tightest inequality for the fidelities
in the asymmetric cloning is saturated. Further we design a conditional
teleportation as symmetric optimal N-> N+1 cloning from N Alice's replicas on
single distant clone. We shortly discussed two feasible experimental
implementations, first one for teleportation of polarization state of a photon
and second one, for teleportation of a time-bin qubit.
- oai_identifier:
- oai:arXiv.org:quant-ph/0401039
- categories:
- quant-ph
- comments:
- 5 pages, 3 figures
- doi:
- 10.1103/PhysRevA.69.052301
- arxiv_id:
- quant-ph/0401039
- created:
- 2004-01-08
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