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ESE Seminar: “Solid-State Spin-Photon Interfaces: Old Friends & New”
October 29, 2019 at 11:00 AM - 12:00 PM
Abstract : Optically active spins in solids offer exciting opportunities as scalable and feasible quantum-optical devices. Numerous material platforms including diamond, semiconductors, and atomically thin 2d materials are under investigation, where each platform brings some advantages of control and feasibility along with other challenges. The inherently mesoscopic nature of solid-state platforms leads to a multitude of dynamics between spins, charges, vibrations and light. Implementing a high level of control on these constituents and their interactions with each other creates exciting opportunities for realizing stationary and flying qubits within the context of spin-based quantum information science, as well as investigating mesoscopic quantum systems. Quantum optics, developed originally for atomic systems, provides a very valuable toolbox for this endeavour. In this talk, I will provide a snapshot of the progress and challenges for two contrasting examples for spin-photon interfaces, namely semiconductor quantum dots and confined excitons in atomically thin materials. For the former, I will focus on a method to suppress the magnetic noise of the nuclear ensemble by an effective cooling mechanism. This method yields access to the nuclear sideband resolved regime and coherent coupling between a single electron spin and the nuclear ensemble. For the latter, I will discuss ways to deterministically trap long-lasting confined excitons acting as artificial atoms, as well as their integration into opto-electronic devices.
Professor of Physics, University of Cambridge
Professor Mete Atature obtained his PhD in 2002 from Boston University Quantum Imaging Laboratory under the supervision of Profs A. Sergienko, B. Saleh and M. Teich working on multiparameter entanglement and quantum interference with entangled photons. He then joined the group of Prof A. Imamoglu at ETH Zurich as a postdoctoral fellow. In 2006 He received his Habilitation from ETH Zurich on Solid-state Quantum Optics. He moved to the University of Cambridge in 2007 as an assistant professor founding the Quantum Optical Materials and Systems research group, and he became a full Professor in 2015. His current research efforts include optical control of spin-photon interfaces in solids, development of nanoscale quantum sensors and investigations of novel quantum materials and devices. He is a Fellow of the Institute of Physics and the Turkish Science Academy.