articlePhysical Review LettersMay 31, 2017GREEN OA

Quantum Secure Direct Communication with Quantum Memory

CAS Key Laboratory of Urban Pollutant Conversion · Chinese Academy of Sciences · +2 more institutions

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Abstract

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 requires the ability to control the transfer of a message effectively in the time domain; thus, it is essential to combine QSDC with quantum memory to accomplish the communication task. In this Letter, we report the experimental demonstration of QSDC with state-of-the-art atomic quantum memory for the first time in principle.…

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