dorsal/arxiv
View SchemaFidelity criterion for quantum-domain transmission and storage of coherent states beyond unit-gain constraint
| Authors | Ryo Namiki, Masato Koashi, Nobuyuki Imoto |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0703158 |
| URL | https://arxiv.org/abs/quant-ph/0703158 |
| DOI | 10.1103/PhysRevLett.101.100502 |
| Journal | Phys. Rev. Lett. 101, 100502 (2008). |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
We generalize the experimental success criterion for quantum teleportation/memory in continuous-variable quantum systems to be suitable for non-unit-gain condition by considering attenuation/amplification of the coherent-state amplitude. The new criterion can be used for a non-ideal quantum memory and long distance quantum communication as well as quantum devices with amplification process. It is also shown that the framework to measure the average fidelity is capable of detecting all Gaussian channels in quantum domain.
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"abstract": "We generalize the experimental success criterion for quantum\nteleportation/memory in continuous-variable quantum systems to be suitable for\nnon-unit-gain condition by considering attenuation/amplification of the\ncoherent-state amplitude. The new criterion can be used for a non-ideal quantum\nmemory and long distance quantum communication as well as quantum devices with\namplification process. It is also shown that the framework to measure the\naverage fidelity is capable of detecting all Gaussian channels in quantum\ndomain.",
"arxiv_id": "quant-ph/0703158",
"authors": [
"Ryo Namiki",
"Masato Koashi",
"Nobuyuki Imoto"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.101.100502",
"journal_ref": "Phys. Rev. Lett. 101, 100502 (2008).",
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Fidelity criterion for quantum-domain transmission and storage of coherent states beyond unit-gain constraint",
"url": "https://arxiv.org/abs/quant-ph/0703158"
},
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