High error-rate quantum key distribution for long-distance communication
نویسندگان
چکیده
منابع مشابه
High error-rate quantum key distribution for long-distance communication
In the original BB84 protocol by Bennett and Brassard, an eavesdropper is detected because his attempts to intercept information result in a bit transmission error rate of at least 25%. Here we design an alternative quantum key distribution protocol where Alice and Bob use two mutually unbiased bases with one of them encoding a “0” and the other encoding a “1.” For higher-dimensional photon sta...
متن کاملLong distance free-space quantum key distribution
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...
متن کاملLong Distance Quantum Key Distribution without Quantum Memory
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 ...
متن کاملContinuous-variable quantum enigma machines for long-distance key distribution
Quantum physics allows for unconditionally secure communication through insecure communication channels. The achievable rates of quantum-secured communication are fundamentally limited by the laws of quantum physics and in particular by the properties of entanglement. For a lossy communication line, this implies that the secret-key generation rate vanishes at least exponentially with the commun...
متن کاملHigh speed and adaptable error correction for megabit/s rate quantum key distribution
Quantum Key Distribution is moving from its theoretical foundation of unconditional security to rapidly approaching real world installations. A significant part of this move is the orders of magnitude increases in the rate at which secure key bits are distributed. However, these advances have mostly been confined to the physical hardware stage of QKD, with software post-processing often being u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2009
ISSN: 1367-2630
DOI: 10.1088/1367-2630/11/6/063043