BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:iCalendar-Ruby BEGIN:VEVENT CATEGORIES:Lectures & Presentations DESCRIPTION:The NQPI Seminar Series features graduate student Jesse Berezov sky discussing "Coupling and control of defect spin qubits via an engineere d magnetic environment" on April 20 from 4:10 to 5:15 p.m. in Clippinger 19 4. \n\n \n\nBerezovsky is Associate Professor in the Department of Physics at Case Western Reserve University.\n\n \n\nAbstract: Defect spin qubits\, such as the nitrogen-vacancy (NV) defect in diamond\, perform splendidly as single qubits. With a coherence time that can exceed 1 s at room temperatu re\, defect spins provide an excellent basis for single qubit devices\, suc h as nanoscale magnetometers. But to go beyond single qubits\, we require a n efficient scalable platform for controlling defect spin qubit registers\, and controllably coupling qubits to engineer entanglement. In this talk\, I will describe recent advances in our understanding of how magnetic materi als and structures couple to defect spin qubits\, and how this opens an ave nue towards engineering the magnetic environment of the spins for control a nd coupling. Topological magnetization states such as magnetic vortices pro vide strong\, local magnetic field gradients that can be controlled dynamic ally for addressable control of qubits [1]. Coupling between qubits may be enabled by a magnon-mediated process. On the other hand\, spin-magnon inter actions can lead to enhanced spin relaxation or decoherence (e.g. [2]). I w ill review recent work exploring the interactions of defect spins with magn ons in adjacent magnetic structures and discuss the implications for propos ed technologies incorporating coherent spins with proximal magnetic element s.\n\n \n\n[1] Wolf\, M. S.\, Badea\, R.\, and Berezovsky\, J. “Fast\, Nano scale Addressability of Nitrogen-Vacancy Spins via Coupling to a Dynamic Fe rromagnetic Vortex” Nature Communications 7\, (2016): 5.\n \n\n[2] Trimble\ , J.\, Gould\, B.\, Heremans\, F. J.\, Zhang\, S. S.-L.\, Awschalom\, D. D. \, amd Berezovsky\, J. “Relaxation of a single defect spin by the low-frequ ency gyrotropic mode of a magnetic vortex” J. Appl. Phys. 130\, (2021). DTEND:20230420T211500Z DTSTAMP:20241113T070032Z DTSTART:20230420T201000Z GEO:39.322604;-82.099286 LOCATION:Clippinger Laboratories\, 194 SEQUENCE:0 SUMMARY:NQPI Seminar Series | Coupling and control of defect spin qubits vi a an engineered magnetic environment\, April 20 UID:tag:localist.com\,2008:EventInstance_42348292509596 URL:https://calendar.ohio.edu/event/nqpi_seminar_series_781 END:VEVENT END:VCALENDAR