TY - JOUR
T1 - Proposal of a full Bell state analyzer for spin qubits in a double quantum dot
AU - Yokoshi, Nobuhiko
AU - Imamura, Hiroshi
AU - Kosaka, Hideo
PY - 2010/4/12
Y1 - 2010/4/12
N2 - We propose a scheme for full Bell state measurement of spin qubits in a double quantum dot. Our scheme consists of Pauli spin-blockade measurements and biaxial electron-spin resonance. In order to eliminate the average of the Zeeman fields, the double quantum dot is designed so that the Landé g -factors of first and second dots satisfy g1 =- g2 with the use of g -factor engineering. Thus, we can swap one of the three spin-triplet states for the spin-singlet state without disturbing the other states. Our study shows that the sequential spin-to-charge conversions enable us to implement the full Bell state measurement of electron-spin qubits.
AB - We propose a scheme for full Bell state measurement of spin qubits in a double quantum dot. Our scheme consists of Pauli spin-blockade measurements and biaxial electron-spin resonance. In order to eliminate the average of the Zeeman fields, the double quantum dot is designed so that the Landé g -factors of first and second dots satisfy g1 =- g2 with the use of g -factor engineering. Thus, we can swap one of the three spin-triplet states for the spin-singlet state without disturbing the other states. Our study shows that the sequential spin-to-charge conversions enable us to implement the full Bell state measurement of electron-spin qubits.
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U2 - 10.1103/PhysRevB.81.161305
DO - 10.1103/PhysRevB.81.161305
M3 - Article
AN - SCOPUS:77955402541
VL - 81
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 16
M1 - 161305
ER -