China's first realization of quantum teleportation: hackers crack-quantum communication-IT information

Transfer quantum state of quantum teleportation is a vital means of communication, generally speaking, is encoded in photons of remote transmission of quantum information from one location to another location. A few days ago, Pan Jianwei, Zhang Qiang, a professor at the University of science and technology of China, such as cooperation with the relevant units in Hefei city of quantum entanglement distribution domain communication test online in advance for the first time independent quantum teleportation of quantum States between sources.

The study published online September 19 in the United Kingdom on the nature Photonics. Published on the same day with Canada research team in quantum teleportation experiment results. Two independent studies show that the Intercity network of teleportation is technically feasible, for future construction of scalable quantum networks laid a solid foundation.

Zhang Qiang introduction, available through quantum quantum secure communication keys to encrypt the classical information transmission, with the development of technology, quantum cryptography will eventually realize the transmission of quantum information, quantum teleportation through a fiber-optic network is expected to greatly improve Internet security and strength. However, the use of fiber-optic network for long distance quantum teleportation requires a separate light source, and after a long distance transmission, no difference in the two beams of light source, quantum teleportation technology challenges.

中国首次实现量子态隐形传输：黑客再无破解可能 - 量子通信 - IT资讯

量子隐形传态是一种传递量子状态的重要通信方式，通俗地讲，就是将编码在光子中的量子信息从一个地点远程传输到另一个地点。日前，中国科学技术大学教授潘建伟、张强等与相关单位合作，在合肥量子城域通信试验网上首次实现了预先纠缠分发的独立量子源之间的量子态隐形传输。

该研究成果9月19日在线发表在英国《自然·光子学》上。同日刊发的还有加拿大研究团队的量子隐形传态实验成果。这两项独立研究表明，城际网络进行量子隐形传态在技术上是可行的，这为未来可扩展量子网络的构建奠定了坚实基础。

张强介绍，现有的量子保密通信主要通过量子密钥对经典信息进行加密传输，随着技术的发展，最终的量子保密通信将会实现量子信息的传输，通过光纤网络进行量子隐形传态有望极大提高互联网连接的安全性和强度。然而，利用光纤网络进行长距离量子隐形传态需要独立的光源，且在长距离传输后，两个光源的光束没有差别，成为量子隐形传态的技术挑战。