dorsal/arxiv
View SchemaFidelity and information in the quantum teleportation of continuous variables
| Authors | Holger F. Hofmann, Toshiki Ide, Takayoshi Kobayashi, Akira Furusawa |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0003053 |
| URL | https://arxiv.org/abs/quant-ph/0003053 |
| DOI | 10.1103/PhysRevA.62.062304 |
| Journal | Phys. Rev. A 62, 062304 (2000) |
Abstract
Ideally, quantum teleportation should transfer a quantum state without distortion and without providing any information about that state. However, quantum teleportation of continuous electromagnetic field variables introduces additional noise, limiting the fidelity of the quantum state transfer. In this article, the operator describing the quantum state transfer is derived. The transfer operator modifies the probability amplitudes of the quantum state in a shifted photon number base by enhancing low photon numbers and suppressing high photon numbers. This modification of the statistical weight corresponds to a measurement of finite resolution performed on the original quantum state. The limited fidelity of quantum teleportation is thus shown to be a direct consequence of the information obtained in the measurement.
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"abstract": "Ideally, quantum teleportation should transfer a quantum state without\ndistortion and without providing any information about that state. However,\nquantum teleportation of continuous electromagnetic field variables introduces\nadditional noise, limiting the fidelity of the quantum state transfer. In this\narticle, the operator describing the quantum state transfer is derived. The\ntransfer operator modifies the probability amplitudes of the quantum state in a\nshifted photon number base by enhancing low photon numbers and suppressing high\nphoton numbers. This modification of the statistical weight corresponds to a\nmeasurement of finite resolution performed on the original quantum state. The\nlimited fidelity of quantum teleportation is thus shown to be a direct\nconsequence of the information obtained in the measurement.",
"arxiv_id": "quant-ph/0003053",
"authors": [
"Holger F. Hofmann",
"Toshiki Ide",
"Takayoshi Kobayashi",
"Akira Furusawa"
],
"categories": [
"quant-ph",
"physics.optics"
],
"doi": "10.1103/PhysRevA.62.062304",
"journal_ref": "Phys. Rev. A 62, 062304 (2000)",
"title": "Fidelity and information in the quantum teleportation of continuous variables",
"url": "https://arxiv.org/abs/quant-ph/0003053"
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