Event
QTC Seminar: Quantum nanophotonics, Dr. Shuo Sun
Tuesday, February 26, 2019
11:00 a.m.
2460 A.V. Williams Building
Kara Stamets
301 405 4471
stametsk@umd.edu
Quantum nanophotonics: engineering atom-photon interactions on a chip
Speaker: Shuo Sun
Abstract: The ability to engineer controllable atom-photon interactions is at the heart of quantum optics and quantum information processing. In this talk, I will introduce a nanophotonic platform for engineering strong atom-photon interactions on a semiconductor chip. I will first discuss an experimental demonstration of a spin-photon quantum transistor [1], a fundamental building block for quantum repeaters and quantum networks. The device allows a single spin trapped inside a semiconductor quantum dot to switch a single photon, and vice versa, a single photon to flip the spin. I will discuss how the spin-photon quantum transistor realizes optical nonlinearity at the fundamental single quantum level, where a single photon could switch the transmission of multiple subsequent photons [2]. I will next discuss the promise of realizing photon-mediated many-body interactions in an alternative solid-state platform based on a more homogeneous quantum emitter, silicon-vacancy (SiV) color centers in diamond. I will introduce our efforts in creating strong light-matter interactions through photonic crystal cavities fabricated in diamond [3], and the use of cavity-stimulated Raman emission to overcome the remaining frequency inhomogeneity of the emitters [4]. Finally, I will outline the exciting prospects of applying inverse designed nanophotonic structures into quantum optics, and their potential applications in engineering photon-mediated atom-atom interactions.
References
[1] S. Sun et al., Nature Nanotech. 11, 539–544 (2016).
[2] S. Sun et al., Science 361, 57-60 (2018).
[3] J. L. Zhang* and S. Sun* et al., Nano Lett. 18, 1360–1365 (2018).
[4] S. Sun et al., Phys. Rev. Lett. 121, 083601 (2018)
Biography: Shuo Sun obtained his PhD in 2016 from the University of Maryland, College Park while working with Professor Edo Waks in the Department of Electrical and Computer Engineering and the Joint Quantum Institute (JQI). His was awarded for the Maiman grand prize from the Optical Society of America and the distinguished dissertation award from the ECE department of the University of Maryland for his pioneering work on experimental demonstration of a nanophotonic spinphoton quantum transistor. He was also nominated as 1 out of the 4 finalists for the Carl E. Anderson Dissertation Award from the American Physics Society. In 2017, he joined Stanford University as a postdoctoral research
scholar, working with Professor Jelena Vuckovic in the Ginzton Laboratory.
