胡承勇
胡承勇

研究员
量子计算研究部
Office 509
Email: hucy@baqis.ac.cn

研究团队:量子点量子计算团队-HCY



胡承勇, 1991年本科毕业于北京大学物理系,1994年硕士毕业于中国科学院物理研究所,2000年于中国科学院半导体研究所和德国维尔茨堡大学获得物理博士学位,2002-2004年作为JST研究员在日本东北大学电通讯研究所工作,2004-2020年在英国布里斯托大学电子与电气工程系任助理研究员,副研究员和研究员。2020年11月加入北京量子信息科学研究院任研究员。

胡承勇研究员一直从事半导体磁光性质,光探测磁共振技术,自旋相干动力学,时间分辨法拉第/克尔旋转技术,腔量子电动力学,以及半导体量子技术研究, 取得以下代表性成果:(1)将光探测磁共振技术首次应用于I型半导体量子阱结构,观测到导带电子的自旋共振,测得电子g 因子;(2)运用时间分辨法拉第旋转技术,系统研究了GaAs, Si, GaN, ZnO等材料的相干自旋动力学过程,测得电子自旋相干时间和电子g 因子;(3)理论上发现单个电子自旋引起的巨旋光效应(法拉第旋转和圆偏振双折射),在此基础上利用量子测量原理,借助电子自旋实现光子之间的相互作用,提出量子三极管的原始概念与器件。 该器件既有传统三极管的开关和放大功能,又可作确定性的量子逻辑门,自旋-光子量子界面,光子纠缠器,量子路由器等,可用于开发量子计算机和量子通信网络等量子技术,以及光子计算机和全光互联网等光学技术;(4)利用单量子点饱和非线性效应,实现一种新型单光子源, 从激光中提取单光子, 继承了激光的一级相干性和光子全同性, 有望成为量子互联网的标配量子光源。


面向分布式量子计算和量子互联网等量子信息技术,我们开展以下研究:

(1)单量子点量子技术(单光子源、单光子开关、单光子三极管、量子中继器等);

(2)光 - 物质相互作用,腔量子电动力学,腔光力学;

(3)自旋光子学,拓扑光子学等。


代表性文章:

1.Manman Wang, Yanfeng LiC.Y. Hu et al, “Quantum interference and beat between single photons and laser light” (to be published).

2.Manman Wang, Yanfeng Li, Hanqing Liu, Haiqiao Ni, Zhichuan Niu, Xiaogang Wei, Renfu Yang, and C.Y. Hu, “Classical-interference origin of two-photon interference” (to be published).

3.Yanfeng Li Manman Wang, P.Yin, X.L.Li, L.You, X.G. Wei, Renfu Yang and C.Y. Hu, “A method to measure laser linewidth using time-resolved Hong-Ou-Mandel interference” (to be published).

4.B.Wu, X-J.Wang, C.Y. Hu, et al “Convert laser light into single photons”, (to be published).

5.C.Y. Hu and F.H. Yang, “Probing quantum nonlinearity of cavity-QED systems with quantum light”, Phys. Rev. B 104, 205301 (2021)

6.C. Y. Hu, “Photonic transistor and router using a single quantum-dot-confined spin in a single-sided optical microcavity”, Sci. Rep. 7, 45582(2017).

7.C.Y. Hu, “Spin-based single-photon transistor, dynamic random access memory, diodes, and routers in semiconductors”, Phys. Rev. B 94, 245307 (2016).

8. C.Y. Hu and J.G. Rarity, “Extended linear regime of cavity-QED enhanced optical circular birefringence induced by a charged quantum dot”, Phys. Rev. B 91, 075304 (2015)

9.C.Y. Hu and J.G. Rarity, “Loss-resistant state teleportation and entanglement swapping using a quantum-dot spin in an optical microcavity ”, Phys. Rev. B 83, 115303 (2011)

10. C.Y. Hu, W.J.Munro, J.L.O'Brien, and J.G. Rarity, “Proposed entanglement beam splitter using a quantum-dot spin in a double-sided optical microcavity”, Phys. Rev. B 80, 205326 (2010)

11.C.Y. Hu, W.J. Munro, and J.G. Rarity, “Deterministic photon entangler using a charged quantum dot in a microcavity”, Phys. Rev. B 78, 125318 (2008)

12.C.Y. Hu, A. Young, J.L. O’Brien, W.J. Munro, and J.G. Rarity, “ Giant optical Faraday rotation induced by a single electron spin in a quantum dot: Applications to entangling remote spins via a single photon”, Phys. Rev. B 78, 085307 (2008)

13.H. Sanada, Y. Kondo, S. Matsuzaka, K. Morita, C. Y. Hu Y. Ohno, and H. Ohno, “Optical pump-probe measurements of local nuclear spin coherence in semiconductor quantum wells”, Phys. Rev. Lett. 96, 067602 (2006)

14.C. Y. Hu, K. Morita, H. Sanada, S. Matsuzaka, Y. Ohno, and H. Ohno, “Spin precession of holes in wurtzite GaN studied using time-resolved Kerr rotation technique”, Phys. Rev. B. 72, R121203 (2005).

15.H. Sanada, S. Matsuzaka, K. Morita, C. Y. Hu, Y. Ohno, and H. Ohno, “Gate Control of Dynamic Nuclear Polarization in GaAs Quantum Wells", Phys. Rev. Lett. 94, 097601 (2005).

16.C. Y. Hu, W. Ossau, D. R. Yakovlev, G. Landwehr, T. Wojtowicz, G. Karczewski, and J. Kossut, “Optically detected magnetic resonance of excess electrons in type-I quantum wells with a low-density electron gas”, Phys. Rev. B 58, R1766 (1998).