dorsal/arxiv
View SchemaQuantum channel of continuous variable teleportation and nonclassicality of quantum states
| Authors | Masahiro Takeoka, Masashi Ban, Masahide Sasaki |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0110031 |
| URL | https://arxiv.org/abs/quant-ph/0110031 |
| DOI | 10.1088/1464-4266/4/2/306 |
Abstract
Noisy teleportation of nonclassical quantum states via a two-mode squeezed-vacuum state is studied with the completely positive map and the Glauber-Sudarshan $P$-function. Using the nonclassical depth as a measure of transmission performance, we compare the teleportation scheme with the direct transmission through a noisy channel. The noise model is based on the coupling to the vacuum field. It is shown that the teleportation channel has better transmission performance than the direct transmission channel in a certain region. The bounds for such region and for obtaining the nonvanished nonclassicality of the teleported quantum states are also discussed. Our model shows a reasonable agreement with the observed teleportation fidelity in the experiment by Furusawa et al. [Science {\bf 282}, 706 (1998)]. We finally mention the required conditions for transmitting nonclassical features in real experiments.
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"abstract": "Noisy teleportation of nonclassical quantum states via a two-mode\nsqueezed-vacuum state is studied with the completely positive map and the\nGlauber-Sudarshan $P$-function. Using the nonclassical depth as a measure of\ntransmission performance, we compare the teleportation scheme with the direct\ntransmission through a noisy channel. The noise model is based on the coupling\nto the vacuum field. It is shown that the teleportation channel has better\ntransmission performance than the direct transmission channel in a certain\nregion. The bounds for such region and for obtaining the nonvanished\nnonclassicality of the teleported quantum states are also discussed. Our model\nshows a reasonable agreement with the observed teleportation fidelity in the\nexperiment by Furusawa et al. [Science {\\bf 282}, 706 (1998)]. We finally\nmention the required conditions for transmitting nonclassical features in real\nexperiments.",
"arxiv_id": "quant-ph/0110031",
"authors": [
"Masahiro Takeoka",
"Masashi Ban",
"Masahide Sasaki"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1464-4266/4/2/306",
"title": "Quantum channel of continuous variable teleportation and nonclassicality of quantum states",
"url": "https://arxiv.org/abs/quant-ph/0110031"
},
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