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《Low Temperature Physical Letters》 2018-05
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Single-Photon Source and its Application on Quantum Information

DUAN Zhaochen;LI Jinpeng;HE Yuming;Department of Modern Physics,University of Science and Technology of China;Hefei National Laboratory for Physical Sciences at Microscale,University of Science and Technology of China;  
Photon is one of the ideal candidates for quantum computation and quantum communication.Ondemand single-photon source with high efficiency and high quality is an important prerequisite for optical quantum computation and absolute secure quantum communication.Self-assembled quantum dots,also called "artificial atoms",have excellent single photon performance and indistinguishability,are ideal single photon sources.Moreover,by applying an electric field,quantum dot can trap a single electron or hole as a spin-photon interface,which can construct scalable optical quantum networks.Quantum dot in micropillar has strong Purcell effect,which can greatly improve the extraction efficiency with single photon performance and indistinguishability maintained.It also has good coherence and can be used for large-scale quantum computation.In recent years,the discovery of nonclassical single-photon emission in monolayer 2D materials have combined 2D materials with the quantum optics,which open a new line of investigation the potential of monolayer for quantum technology.Compared with traditional solid-state single-photon sources,2D materials can easily combine with other optoelectronic platforms.They can also artificially control the position of defects,which is conducive to the development of single-photon sources with highquality and low-cost.This has received extensive attention from scientists.In this report,we firstly come up with the significance of developing single photon sources from quantum computation and quantum communication.Secondly we introduce the performances and principles of single photon sources.Then we introduce single photon sourceson self-assembled quantum dots and 2D monolayer materials and their realization and development.Finally,from spinphoton quantum teleportation and boson sampling experiment,we discuss the application prospects of single photon sources in quantum computation and quantum networks.
【CateGory Index】: O413
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