Practical Long-Distance Side-Channel-Free Quantum Key Distribution
نویسندگان
چکیده
منابع مشابه
Side-channel-free quantum key distribution.
Quantum key distribution (QKD) offers the promise of absolutely secure communications. However, proofs of absolute security often assume perfect implementation from theory to experiment. Thus, existing systems may be prone to insidious side-channel attacks that rely on flaws in experimental implementation. Here we replace all real channels with virtual channels in a QKD protocol, making the rel...
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In the age of information and globalisation, secure communication as well as the protection of sensitive data against unauthorised access are of utmost importance. Quantum cryptography currently provides the only way to exchange a cryptographic key between two parties in an unconditionally secure fashion. Owing to losses and noise of today’s optical fibre and detector technology, at present qua...
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We develop a model for practical, entanglement-based long-distance quantum key distribution employing entanglement swapping as a key building block. Relying only on existing off-the-shelf technology, we show how to optimize resources so as to maximize secret key distribution rates. The tools comprise lossy transmission links, such as telecom optical fibers or free space, parametric down-convers...
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A quantum cryptography scheme for lossy channel is proposed which does not employ quantum memory. The scheme also does not use quantum codes and is rather simple for practical implementation. The goal of quantum cryptography is to secretly distribute the key (a string of bits) between the two spatially separated legitimate users. The existing quantum cryptography schemes can be classified into ...
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Long-Distance Quantum Key Distribution over Telecom Fiber Lei-Lei Huang Master of Applied Science Graduate Department of Electrical & Computer Engineering University of Toronto 2006 We present two long-distance quantum key distribution (QKD) systems over telecom fiber. The first one is the Sagnac QKD system implementing standard BB84 protocol. Novel polarization-insensitive phase modulators are...
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ژورنال
عنوان ژورنال: Physical Review Applied
سال: 2019
ISSN: 2331-7019
DOI: 10.1103/physrevapplied.12.054034