Frequency hopping in quantum interferometry: Efficient up-down conversion for qubits and ebits

被引：40
作者：
Giorgi, G [1 ]
Mataloni, P
De Martini, F
机构：
[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[2] Univ Roma La Sapienza, Ist Nazl Fis Mat, I-00185 Rome, Italy
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 02期
关键词：
D O I：
10.1103/PhysRevLett.90.027902
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A novel Mach-Zehnder interferometer terminated at two different frequencies realizes in a quantum regime the nonlinear frequency conversion of optical quantum superposition states. The information-preserving character of the relevant unitary transformation has been experimentally demonstrated for input qubits and ebits. Besides its own intrinsic fundamental interest, the new scheme is expected to find important applications in modern quantum information technology.
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页数：4
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