【物理格致论坛第56期】Electrically controlled quantum interference and its applications

信息来源:学院办公室   点击次数:  发布时间:2019-10-30

一、题目:Electrically controlled quantum interference and its applications

二、主讲人:秦立国

三、时间:20191031日(星期四)上午945

四、地点:闻理园A4-222


报告摘要:The ability to modulate an optical field via an electric field is regarded as a key function of electro-optic interconnects, which are used in optical communications and information-processing systems. One of the main devices required for such interconnects is the electro-optic modulator (EOM). Current EOMs based on electro-optic and electro-absorption effects often are bulky and power-inefficient due to the weak electro-optic properties of their constituent materials. Here, we propose a new mechanism to produce an arbitrary-waveform EOM based on quantum interference, in which both real and imaginary parts of the susceptibility are engineered coherently with super-high efficiency. Based on this EOM, a waveform interconnect from the voltage to the modulated optical absorption is realized. In addition, we presented an electrically controlled quantum memory  and entanglement in such an electro-optic system .We expect that such a new type of electro-optic interactions will have a broad range of applications, including in optical communications and networks.

References

[1] Qin L. G et al. Electro-optic waveform interconnect based on quantum interference, Photonics Research , 5(5) 481-487 (2017).

[2] Qin L. G et al. Electrically Controlled Quantum Memories with a Cavity and Electro-mechanical System, IEEE Journal of Quantum Electronics 53(3) 9300106 (2016).

[3] Qin L. G et al., Vacuum-induced quantum memory in an opto-electromechanical system, Optics Communications 410 ,102107 (2018).

[4] Qin L. G et al., Optomechanical entanglement switch in the hybrid opto-electromechanical device, Journal of the Optical Society of America B, 36(6),1544-1550 (2019).


报告人简介:秦立国博士,上海工程技术大学副教授,主要从事量子信息与量子光学邻域的研究,已在Photonics ResearchIEEE Journal of Quantum Electronics等学术刊物上发表论文二十余篇。


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