Semiconductor nanocrystals for room-temperature coherent electronics: A flexible platform for manipulating spin coherence – Jesse Berezovsky

Date: Mon. March 4th, 2013, 12:30 pm-1:30 pm
Location: Rockefeller 221

One route towards future electronics is to exploit interactions between coherent electron spin states and photons in semiconductor structures. This will require an understanding of the coherent evolution of spin states, the eventual decoherence of these states, and how these states interact with light, all in a scalable room-temperature system. In this seminar, I will present our work on spins in semiconductor nanocrystal quantum dots (NCQDs). This system provides a platform to study room-temperature coherent spin states and their interactions with light. In an NCQD, a spin optically initialized into a superposition of eigenstates remains coherent for approximately one nanosecond at room temperature. Mechanisms that limit this lifetime will be discussed. A short spin lifetime necessitates fast operation of any future device. I will describe an ongoing project to couple confined spins to dynamic ferromagnetic structures for fast spin manipulation.