Journal
PHYSICAL REVIEW A
Volume 79, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.050301
Keywords
optical squeezing; quantum computing; quantum entanglement; teleportation
Categories
Funding
- Spanish MICINN [FIS2005-01369, FIS2008-01236/FIS]
- QOIT
- Generalitat de Catalunya [CIRIT SGR-00185]
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We give a quantum benchmark for teleportation and quantum storage experiments suited for pure and mixed test states. The benchmark is based on the average fidelity over a family of phase-covariant states and certifies that an experiment cannot be emulated by a classical setup, i.e., by a measure-and-prepare scheme. We give an analytical solution for qubits, which shows important differences with standard state estimation approach, and compute the value of the benchmark for coherent and squeezed states, both pure and mixed.
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