44

e3s-center.berkeley.edu · S Ge barrier 023 077 Siu. Geo ... Read-out by charge detectors: transistor current channels ... Koppens et al, Nature 442, 766 (2006)

  • Upload
    lenhu

  • View
    215

  • Download
    1

Embed Size (px)

Citation preview

Nature 393, 133 (1998)

Why use electron spins in semiconductor as qubits?

electron spins in semiconductor can have very long coherence times

T1 up to 100 s

T2: natural Si (5% Si29) up to 0.25 ms, measured by G. Feher in 1958

Isotopically purified up to 3 sec! by S. Lyon’s group in 2011