High-dimensional quantum key distribution using dispersive optics

被引：134

作者：

Mower, Jacob ^{[1
,2
]}

Zhang, Zheshen ^{[1
]}

Desjardins, Pierre ^{[3
]}

Lee, Catherine ^{[1
,4
]}

Shapiro, Jeffrey H. ^{[1
]}

Englund, Dirk ^{[1
,2
,3
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

[2] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA

[3] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[4] Columbia Univ, Dept Phys, New York, NY 10027 USA

来源：

PHYSICAL REVIEW A | 2013年 / 87卷 / 06期

关键词：

CRYPTOGRAPHY; TIME; ENTANGLEMENT; PHOTONS;

D O I：

10.1103/PhysRevA.87.062322

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a high-dimensional quantum key distribution (QKD) protocol that employs temporal correlations of entangled photons. The security of the protocol relies on measurements by Alice and Bob in one of two conjugate bases, implemented using dispersive optics. We show that this dispersion-based approach is secure against collective attacks. The protocol, which represents a QKD analog of pulse position modulation, is compatible with standard fiber telecommunications channels and wavelength division multiplexers. We describe several physical implementations to enhance the transmission rate and describe a heralded qudit source that is easy to implement and enables secret-key generation at >4 bits per character of distilled key across over 200 km of fiber.

引用

页数：8

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