The dependence of fidelity on the squeezing parameter in teleportation of the squeezed coherent states
This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field. The fidelity between the original squeezed coherent state and the teleported one is expressed in terms of the squeezing parameter r and the quantum channe...
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Published in | Chinese physics B Vol. 20; no. 5; pp. 101 - 104 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.05.2011
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Subjects | |
Online Access | Get full text |
ISSN | 1674-1056 2058-3834 |
DOI | 10.1088/1674-1056/20/5/050311 |
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Abstract | This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field. The fidelity between the original squeezed coherent state and the teleported one is expressed in terms of the squeezing parameter r and the quantum channel parameter (two-mode squeezed state) p. The results of analysis show that the fidelity increases with the increase of the quantum channel parameter p, while the fidelity decreases with the increase of the squeezing parameter r of the squeezed state. Thus the coherent state (r= O) is the best quantum signal for continuous variable quantum teleportation once the quantum channel is built. |
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AbstractList | This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field. The fidelity between the original squeezed coherent state and the teleported one is expressed in terms of the squeezing parameter r and the quantum channel parameter (two-mode squeezed state) p. The results of analysis show that the fidelity increases with the increase of the quantum channel parameter p, while the fidelity decreases with the increase of the squeezing parameter r of the squeezed state. Thus the coherent state (r= O) is the best quantum signal for continuous variable quantum teleportation once the quantum channel is built. This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field. The fidelity between the original squeezed coherent state and the teleported one is expressed in terms of the squeezing parameter r and the quantum channel parameter (two-mode squeezed state) p. The results of analysis show that the fidelity increases with the increase of the quantum channel parameter p, while the fidelity decreases with the increase of the squeezing parameter r of the squeezed state. Thus the coherent state (r = 0) is the best quantum signal for continuous variable quantum teleportation once the quantum channel is built. |
Author | 张静涛 何广强 任李杰 曾贵华 |
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Cites_doi | 10.1103/PhysRevLett.93.250503 10.1103/PhysRevA.72.042304 10.1088/1674-1056/19/6/060306 10.1103/PhysRevLett.81.5668 10.1103/PhysRev.47.777 10.1103/PhysRevLett.80.869 10.1103/PhysRevA.61.022306 10.1103/PhysRevA.71.032336 10.1007/978-94-015-1258-9 10.1103/PhysRevLett.70.1895 10.1038/37539 10.1126/science.282.5389.706 10.1103/PhysRevA.73.062330 10.1103/PhysRevA.76.022301 10.1103/PhysRevA.61.010302 10.1088/0305-4470/31/15/025 |
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DocumentTitleAlternate | The dependence of fidelity on the squeezing parameter in teleportation of the squeezed coherent states |
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Notes | This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field. The fidelity between the original squeezed coherent state and the teleported one is expressed in terms of the squeezing parameter r and the quantum channel parameter (two-mode squeezed state) p. The results of analysis show that the fidelity increases with the increase of the quantum channel parameter p, while the fidelity decreases with the increase of the squeezing parameter r of the squeezed state. Thus the coherent state (r= O) is the best quantum signal for continuous variable quantum teleportation once the quantum channel is built. quantum teleportation, the squeezed coherent states, fidelity Zhang Jing-Tao, He Guang-Qiang, Ren Li-Jie, Zeng Gui-Hua State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200030, China 11-5639/O4 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
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References | 12 13 14 16 Braunstein S L (4) 2003 17 Li Y L (2) 2010; 19 1 5 6 7 8 9 van Loock P (11) 1999; 61 Nielsen M A (3) 2000 Scutaruy H (15) 1998; 31 10 |
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Snippet | This paper investigates an analytical expression of teleportation fidelity in the teleportation scheme of a single mode of electromagnetic field. The fidelity... |
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SubjectTerms | Channels Coherence Compressing Electromagnetic fields Exact solutions Mathematical analysis Quantum teleportation Teleportation 保真度 压缩相干态 挤压参数 解析表达式 远距传物 量子通道 隐形传态 隐形传输 |
Title | The dependence of fidelity on the squeezing parameter in teleportation of the squeezed coherent states |
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