Quantum Secure Direct Communication: Current Status and Perspective Application in Network

Prof. Gui-Lu Long

Prof. Gui-Lu Long
Tsinghua University and
Beijing Academy of Quantum Information Sciences
China

Abstract

Quantum secure direct communication (QSDC) transmits information directly over a quantum channel. Over the last few years, tremendous progress has been made. Detailed security analysis, coding schemes for high loss quantum channel and quantum-memory-free protocols have been developed. A practical QSDC prototype that supports texts, image files and real-time telephone has been implemented. Recently, it has been proposed that by combining QSDC with post-quantum cryptographic algorithms, secure-repeater quantum networks can be built that offers secure end-to-end communication, eavesdropping detecting capability and fully compatibility with existing network.

Brief Bio

Gui-Lu Long is a professor at Tsinghua University & Beijing Academy of Quantum Information Sciences. He obtained his master’s degree in high-energy physics and Ph.D. from nuclear physics from Tsinghua University in 1985 and 1987 respectively, and his BA in physics from Shandong University in 1982. Notably among his contributions, he proposed the quantum secure direct communication(QSDC) that transmits information directly, in contrast to QKD; constructed the Grover-Long algorithm for exact search and the full quantum eigensolver (FQE) for NISQ applications; and established the widely used linear combination unitaries (LCU) method for quantum algorithm designs. He published 300+ papers with 19000+ citations. He is an IEEE member, fellow of IoP (UK) and APS (US). He was President of AAPPS, one of three biggest continental physical associations in the world.