Estimates for practical quantum cryptography
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چکیده
منابع مشابه
Towards practical quantum cryptography
Quantum cryptography bases the security of quantum key exchange on the laws of quantum physics and is likely to become the first application employing quantum effects for communication. Here we present performance tests of a new design based on polarization encoding of attenuated, coherent light pulses. Our measurements show that this compact setup can achieve an effective key-bit rate in the k...
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We report our recent results in development of the secure fiber-optics communication system based upon quantum key distribution. Emphasize is made on the limitation imposed by the state-of-the-art components crucial for the system performance. We discuss the problem of the interferometer design and highlight the possible security loopholes known. Together with single photon counting performance...
متن کاملLimitations on practical quantum cryptography
We provide limits to practical quantum key distribution, taking into account channel losses, a realistic detection process, and imperfections in the "qubits" sent from the sender to the receiver. As we show, even quantum key distribution with perfect qubits might not be achievable over long distances when the other imperfections are taken into account. Furthermore, existing experimental schemes...
متن کاملPractical Issues in Quantum Cryptography
Practical Issues in Quantum Cryptography Feihu Xu Master of Applied Science Graduate Department of Electrical & Computer Engineering University of Toronto 2012 Cryptography plays a key role in our life ranging from computer passwords to electronic commerce to national military security. The most widely used modern encryption algorithm is the public-key algorithm. However, the security of all pu...
متن کاملLimitations of Practical Quantum Cryptography
As we all know that the quantum cryptography is having lots of consideration in present time for security but it’s important to note that implementation of algorithms using QC is not viable if one wants to have the security intact. It can only be used to share keys using Quantum Key Distribution (QKD). Distribution of keys is just a part of securing information. Proper encryption and decryption...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 1999
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.59.3301