Security of direct communication quantum channel with feedback
نویسندگان
چکیده
منابع مشابه
Improving the security of quantum direct communication with authentication
Two protocols of quantum direct communication with authentication [Phys. Rev. A 73, 042305 (2006)] are recently proposed by Lee, Lim and Yang. In this paper we will show that the authenticator Trent should be prevented from knowing the secret message of communication and the protocols can be eavesdropped by Trent using the the intercept-measure-resend attack. To fix this leak, we revise the ori...
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Recently Xia and Song [Phys. Lett. A (In press)] have proposed a controlled quantum secure direct communication (CQSDC) protocol. They claimed that in their protocol only with the help of the controller Charlie, the receiver Alice can successfully extract the secret message from the sender Bob. In this letter, first we will show that within their protocol the controller Charlie’s role can be ex...
متن کاملComplete Quantum Communication with Security
The long-standing problem of quantum information processing is to remove the classical channel from quantum communication. Introducing a new information processing technique, it is discussed that both insecure and secure quantum communications are possible without the requirement of classical channel. Quantum cryptography [1-7] and teleportation [8] are the two important aspects of quantum comm...
متن کاملQuantum Secure Direct Communication with Quantum Memory.
Quantum communication provides an absolute security advantage, and it has been widely developed over the past 30 years. As an important branch of quantum communication, quantum secure direct communication (QSDC) promotes high security and instantaneousness in communication through directly transmitting messages over a quantum channel. The full implementation of a quantum protocol always require...
متن کاملFeedback in Quantum Communication
Communication is primarily the generation of correlations between two parties. The transmission of information is undertaken to correlate the received message with an possible set of transmitted messages. In the classical theory of information the maximum rate of information transmission through a memoryless channel is given by a measure of the maximum correlation that may be generated through ...
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ژورنال
عنوان ژورنال: International Journal of Quantum Information
سال: 2015
ISSN: 0219-7499,1793-6918
DOI: 10.1142/s0219749915500628