TY - JOUR
T1 - Realizing probabilistic identification and cloning of quantum states via universal quantum logic gates
AU - Zhang, Chuan Wei
AU - Wang, Zi Yang
AU - Li, Chuan Feng
AU - Guo, Guang Can
PY - 2000
Y1 - 2000
N2 - Probabilistic quantum cloning and identifying machines can be constructed via unitary-reduction processes [Duan and Guo, Phys. Rev. Lett. 80, 4999 (1998)]. Given the cloning (identifying) probabilities, we derive an explicit representation of the unitary evolution and corresponding Hamiltonian to realize probabilistic cloning (identification). The logic networks are obtained by decomposing the unitary representation into universal quantum logic operations. The robustness of the networks is also discussed. Our method is suitable for a k-partite system, such as quantum computer, and may be generalized to general state-dependent cloning and identification.
AB - Probabilistic quantum cloning and identifying machines can be constructed via unitary-reduction processes [Duan and Guo, Phys. Rev. Lett. 80, 4999 (1998)]. Given the cloning (identifying) probabilities, we derive an explicit representation of the unitary evolution and corresponding Hamiltonian to realize probabilistic cloning (identification). The logic networks are obtained by decomposing the unitary representation into universal quantum logic operations. The robustness of the networks is also discussed. Our method is suitable for a k-partite system, such as quantum computer, and may be generalized to general state-dependent cloning and identification.
UR - https://www.scopus.com/pages/publications/85037240210
U2 - 10.1103/PhysRevA.61.062310
DO - 10.1103/PhysRevA.61.062310
M3 - Article
AN - SCOPUS:85037240210
SN - 1050-2947
VL - 61
SP - 9
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 6
ER -