TY - JOUR
T1 - Theory of unitary spin rotation and spin-state tomography for a single electron and two electrons
AU - Takagahara, T.
PY - 2010/6/1
Y1 - 2010/6/1
N2 - Electron spins in semiconductor nanostructures are considered as one of the most promising candidates of the building blocks for quantum information processing. Initialization, coherent manipulation, and measurement of a single electron spin have been recently established. Here we explore the possibility to manipulate and measure by optical means the states of two electrons as a single qubit in nanostructures and propose methods of spin-state tomography based on Faraday or Kerr rotation for cases of both a single electron and two electrons, as well as a method of the Bell-state measurement for two electrons.
AB - Electron spins in semiconductor nanostructures are considered as one of the most promising candidates of the building blocks for quantum information processing. Initialization, coherent manipulation, and measurement of a single electron spin have been recently established. Here we explore the possibility to manipulate and measure by optical means the states of two electrons as a single qubit in nanostructures and propose methods of spin-state tomography based on Faraday or Kerr rotation for cases of both a single electron and two electrons, as well as a method of the Bell-state measurement for two electrons.
UR - http://www.scopus.com/inward/record.url?scp=77955678051&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955678051&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.27.000A46
DO - 10.1364/JOSAB.27.000A46
M3 - Article
AN - SCOPUS:77955678051
SN - 0740-3224
VL - 27
SP - A46-A62
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 6
ER -