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SARG04
SARG04 (named after Valerio Scarani, Antonio Acín, Gregoire Ribordy, and Nicolas Gisin) is a 2004 quantum cryptography protocol derived from the first protocol of that kind, BB84. Origin Researchers built SARG04 when they noticed that by using the four states of BB84 with a different information encoding they could develop a new protocol which would be more robust, especially against the photon-number-splitting attack, when attenuated laser pulses are used instead of single-photon sources. SARG04 was defined by Scarani et al. in 2004 in Physical Review Letters as a prepare and measure version (in which it is equivalent to BB84 when viewed at the level of quantum processing). An entanglement-based version has been defined as well. Description In the SARG04 scheme, Alice wishes to send a private key to Bob. She begins with two strings of bits, a and b, each n bits long. She then encodes these two strings as a string of n qubits, , \psi\rangle = \bigotimes_^, \psi_\rangle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Antonio Acín
Antonio Acín Dal Maschio is a Spanish theoretical physicist, currently an Catalan Institution for Research and Advanced Studies, ICREA professor at ICFO – The Institute of Photonic Sciences in Castelldefels, near Barcelona. Research interests Acín's primary research interest lies in quantum information theory, with a particular focus on Quantum entanglement, entanglement characterization and quantum nonlocality. He is also involved in developing quantum communication protocols, emphasizing quantum cryptography and randomness. Education Antonio Acín received his undergraduate education in both Telecommunication Engineering at the Polytechnic University of Catalonia from 1990 to 1997 and Physics at the University of Barcelona from 1993 to 1997. He then pursued his doctoral studies at the University of Barcelona and earned his Doctorate in Theoretical Physics in 2001. Research career Antonio Acín began his research career as a post-doctoral researcher at the University of G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Quantum Cryptography Protocol
Quantum key distribution (QKD) protocols are used in quantum key distribution. The first protocol of that kind was BB84, introduced in 1984 by Charles H. Bennett (computer scientist), Charles H. Bennett and Gilles Brassard. After that, many other protocols have been defined. List of quantum key distribution protocols *BB84 (1984) is a quantum key distribution scheme that allows two parties to securely communicate a private key for use in one-time pad encryption using the quantum property that information gain is only possible at the expense of disturbing the signal if the two states one is trying to distinguish are not orthogonal and an authenticated public classical channel. *E91 protocol (1991) is a quantum cryptography method that uses entangled pairs of photons to generate keys for secure communication, with the ability to detect any attempts at eavesdropping by an external party through the violation of Bell's Theorem and the preservation of perfect correlation between the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |