No information flow using statistical fluctuations and quantum cryptography
نویسندگان
چکیده
منابع مشابه
Quantum Cryptography and Security of Information Systems
We show concept of BB84 quantum key distribution (QKD) protocol and analyze its use as an information system. The difference between classical and quantum cryptography is presented in a way of understanding the main advantage of quantum information processing over classical information processing. At the end of the article, we present today and future use of quantum cryptography and possible im...
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Quantum-mechanical entropies of position and momentum operators in a given state are shown to be reasonable and sensitive measures for squeezing of quantum fluctuations. It is shown to be true not only for states having Gaussian wave functions but also for more general, both pure and mixed, quantum states. A simple proof that the squeezing exhibited by the variance is always accompanied by a co...
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Like all of quantum information theory, quantum cryptography is traditionally based on two level quantum systems. In this letter, a new protocol for quantum key distribution based on higher dimensional systems is presented. An experimental realization using an interferometric setup is also proposed. Analyzing this protocol from the practical side, one finds an increased key creation rate while ...
متن کاملNetwork Security Using Quantum Cryptography
Network security and cryptography is a subject about how to protect information in digital form and to provide security services. The purpose of a digital signature is to provide a means for an entity to bind its identity to a piece of information. The common attacks on digital signature were reviewed. The first method was the RSA signature scheme, which remains today one of the most practical ...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2004
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.69.042317