Von: Gaby Strahm <strahm@phys.ethz.ch> Betreff: Announcement solid state physics seminar, 31. July, 16:15h Datum: 30. Juli 2012 10:56:45 MESZ An: FKP alle <fkp-alle@phys.ethz.ch>

Dear all,

Please be informed about the following solid state physics seminar:

Date: Tuesday, 31.07.2012, 16:15h

Location: HPF G6

Speaker: Peter Maurer, Harvard University

Title: Quantum control of diamond defects for quantum information and bio-imaging

Abstract: In recent years, much attention has focused on the quantum control of nanoscale systems under ambient condition; these efforts span a variety of goals ranging from quantum metrology to quantum communication and computation. In this talk, I will focus on recent efforts toward the realization of these goals by taking advantage of the spin properties of individual Nitrogen Vacancy (NV) color centers in diamond. I will begin by introducing a novel technique, which allows for the detection and manipulation of individual spins with resolution beyond the diffraction limit [1]; this constitutes an important building block for an NV-based quantum processor [2] and opens the door to nanoscale bio-imaging/sensing. I will then discuss the extraordinary readout and coherence properties of NV-based quantum registers, demonstrating single shot readout and storage times well beyond a second at room temperature [3]. The ability to store quantum information on a macroscopic time scale in small, portable devices is an important step towards the practical realization of "quantum money" type encryption primitives.

[1] Maurer et. al. - Far-field optical imaging and manipulation of individual spins with nanoscale resolution - Nature Physics 6 - 912 to 918 - Sep. 2010 [2] Yao et. al. - Scalable architecture for a room temperature solid-state quantum information processor - Nature Communication 3 - 800 - Mar. 2012 [3] Maurer et. al. - Room temperature quantum bit memory exceeding one second - Science 8 - 1283 - Jun. 2012

Host: Andreas Wallraff

You are cordially invited!

kind regards

-- Gaby Strahm ETH Zürich Solid State Physics Laboratory Schafmattstr. 16, HPF F7 8093 Zürich Switzerland

Phone: +41 44 633 23 35 Fax: +41 44 633 10 72

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------------------------------------------------------------------------------------------------------ ETH Zurich Dr. Ilona Blatter NCCR QSIT Coordinator Laboratory for Solid State Physics HPF E 17 Schafmattstrasse 16 8093 Zurich ilona.blatter@phys.ethz.ch www.nccr-qsit.ethz.ch Phone: +41 44 633 36 06