Teleportation of a vacuum-one-photon qubit

被引:193
作者
Lombardi, E
Sciarrino, F
Popescu, S
De Martini, F
机构
[1] Univ Roma La Sapienza, Dipartimento Fis, Ist Nazl Fis Mat, I-00185 Rome, Italy
[2] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TH, Avon, England
[3] Hewlett Packard Labs, Bristol BS12 6QZ, Avon, England
关键词
D O I
10.1103/PhysRevLett.88.070402
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report the experimental realization of teleporting a one-particle entangled qubit. The qubit is physically implemented by a two-dimensional subspace of states of a mode of the electromagnetic field, specifically, the space spanned by the vacuum and the one-photon state. Our experiment follows the line suggested by Lee and Kim [Phys. Rev. A 63, 012305 (2000)] and Knill, Laflamme, and Milburn [Nature (London) 409, 46 (2001)]. An unprecedented large value of the teleportation "fidelity" has been attained: F = (95.3 +/- 0.6)%.
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页数:4
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