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SUMMARY:Silicon quantum dots for quantum information processing - Dr. Chih
 -Hwan Henry Yang\, University of New South Wales\, Au
DTSTART:20150513T131500Z
DTEND:20150513T141500Z
UID:TALK59502@talks.cam.ac.uk
CONTACT:Teri Bartlett
DESCRIPTION:Silicon quantum dots (QDs) have becoming a field of interest i
 n quantum information processing\, with its long spin coherence time in is
 otopically purified silicon and compatibility with modern industrial techn
 ology. In this talk\, I will cover the evolution of silicon MOS based sili
 con QDs in UNSW Australia. This includes fabrication of our QD [1\, 2]\, e
 lectron charge detection [3]\, spin/valley physics of a QD [4-6]\, realisa
 tion of an electron spin resonant line controlled qubit device [7]\, and o
 ur recent work on a two qubit system [8]. Our results shown the Si-MOS QD 
 qubits can exceed relaxation time\, T1 over 2 seconds and coherence time\,
  T2 over 28 milliseconds\, and have control over the electron gyromagnetic
  ratio and valley splitting energy.\n\n[1] S. J. Angus et al.\, Nano Lette
 rs 7\, 2051 (2007)\n[2] W. H. Lim et al.\, Appl. Phys. Lett. 95\, 242102 (
 2009)\n[3] C. H. Yang et al.\, AIP Advances 1\, 042111 (2011)\n[4] W. H. L
 im et al.\, Nanotechnology 22\, 335704 (2011)\n[5] C. H. Yang et al.\, Phy
 s. Rev. B 86\, 115319 (2012)\n[6] C. H. Yang et al.\, Nat. Comm. 4\, 2069 
 (2013)\n[7] M. Veldhorst et al.\, Nat. Nano. 9\, 981 (2014)\n[8] M. Veldho
 rst et al.\, arXiv:1411.5760\n
LOCATION:Mott Seminar Room (Mott Building Room 531)\, Cavendish Laboratory
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