期刊
PHYSICAL REVIEW LETTERS
卷 128, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.160501
关键词
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资金
- Einstein Research Unit on Quantum Devices
- Australian Research Council (ARC) under the Centre of Excellence for Quantum Computation and Communication Technology [CE170100012]
- BMBF (QPIC-1, PhoQuant)
We introduce a linear optical technique that can achieve ideal quantum teleamplification, improving success probability and resource efficiency. We also demonstrate its applications as a loss-tolerant quantum relay for entanglement distribution and distillation.
We introduce a linear optical technique that can implement ideal quantum teleamplification up to the nth Fock state, where n can be any positive integer. Here teleamplification consists of both quantum teleportation and noiseless linear amplification (NLA). This simple protocol consists of a beam splitter and an (n + 1) splitter, with n ancillary photons and detection of n photons. For a given target fidelity, our technique improves success probability and physical resource costs by orders of magnitude over current alternative teleportation and NLA schemes. We show how this protocol can also be used as a loss-tolerant quantum relay for entanglement distribution and distillation.
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