TY - JOUR
T1 - Efficient purification protocols using iSWAP gates in solid-state qubits
AU - Tanamoto, Tetsufumi
AU - Maruyama, Koji
AU - Liu, Yu Xi
AU - Hu, Xuedong
AU - Nori, Franco
PY - 2008/12/5
Y1 - 2008/12/5
N2 - We show an efficient purification protocol in solid-state qubits by replacing the usual bilateral controlled-NOT gate by the bilateral iSWAP gate. We also show that this replacement can be applied to breeding and hashing protocols, which are useful for quantum state purification. These replacements reduce the number of fragile and cumbersome two-qubit operations, making more feasible quantum-information processing with solid-state qubits. As examples, we also present quantitative analyses for the required time to perform state purification using either superconducting or semiconducting qubits.
AB - We show an efficient purification protocol in solid-state qubits by replacing the usual bilateral controlled-NOT gate by the bilateral iSWAP gate. We also show that this replacement can be applied to breeding and hashing protocols, which are useful for quantum state purification. These replacements reduce the number of fragile and cumbersome two-qubit operations, making more feasible quantum-information processing with solid-state qubits. As examples, we also present quantitative analyses for the required time to perform state purification using either superconducting or semiconducting qubits.
UR - http://www.scopus.com/inward/record.url?scp=57449117092&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.78.062313
DO - 10.1103/PhysRevA.78.062313
M3 - 学術論文
AN - SCOPUS:57449117092
SN - 1050-2947
VL - 78
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 6
M1 - 062313
ER -