dorsal/arxiv
View SchemaAutocompensating Quantum Cryptography
| Authors | Donald S. Bethune, William P. Risk |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0204144 |
| URL | https://arxiv.org/abs/quant-ph/0204144 |
| DOI | 10.1088/1367-2630/4/1/342 |
| Journal | New J. Phys. 4 (2002) 42 |
Abstract
Quantum cryptographic key distribution (QKD) uses extremely faint light pulses to carry quantum information between two parties (Alice and Bob), allowing them to generate a shared, secret cryptographic key. Autocompensating QKD systems automatically and passively compensate for uncontrolled time dependent variations of the optical fiber properties by coding the information as a differential phase between orthogonally-polarized components of a light pulse sent on a round trip through the fiber, reflected at mid-course using a Faraday mirror. We have built a prototype system based on standard telecom technology that achieves a privacy-amplified bit generation rate of ~1000 bits/s over a 10-km optical fiber link. Quantum cryptography is an example of an application that, by using quantum states of individual particles to represent information, accomplishes a practical task that is impossible using classical means.
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"abstract": "Quantum cryptographic key distribution (QKD) uses extremely faint light\npulses to carry quantum information between two parties (Alice and Bob),\nallowing them to generate a shared, secret cryptographic key. Autocompensating\nQKD systems automatically and passively compensate for uncontrolled time\ndependent variations of the optical fiber properties by coding the information\nas a differential phase between orthogonally-polarized components of a light\npulse sent on a round trip through the fiber, reflected at mid-course using a\nFaraday mirror. We have built a prototype system based on standard telecom\ntechnology that achieves a privacy-amplified bit generation rate of ~1000\nbits/s over a 10-km optical fiber link. Quantum cryptography is an example of\nan application that, by using quantum states of individual particles to\nrepresent information, accomplishes a practical task that is impossible using\nclassical means.",
"arxiv_id": "quant-ph/0204144",
"authors": [
"Donald S. Bethune",
"William P. Risk"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1367-2630/4/1/342",
"journal_ref": "New J. Phys. 4 (2002) 42",
"title": "Autocompensating Quantum Cryptography",
"url": "https://arxiv.org/abs/quant-ph/0204144"
},
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