5 papers
On the coherence veryfication of the continuous variable state in Fock space
Wang Xiang-bin, Matsumoto Keiji, Tomita Akihisa
Almost all novel observable phenomena in quantum optics are related to the quantum coherence. The coherence here is determined by the relative phase inside a state. Unfortunately,…
Arbitrary classical privicy amplification can be used for the quantum key distribution
Wang Xiang-bin, Hwang Won Yong, Matsumoto Keiji
The paper is withdrawn.
Dynamics of Josephson junction systems in the computational subspace
Wang Xiang-Bin, Matsumoto Keiji, Fan Heng +1
The quantum dynamics of the Josephson junction system in the computational subspace is investigated. A scheme for the controlled not operation is given for two capasitively coupled…
On the nonadiabatic geometric quantum gates
Wang Xiang-Bin, Matsumoto Keiji
Motivated for the fault tolerant quantum computation, quantum gate by adiabatic geometric phase shift is extensively investigated. In this paper, we demonstrate the nonadiabatic sc…
A Clarification on the Detection of Aharanov-Anandan's phase and fault tolerate computation with symmetric SQUID
Wang Xiang-Bin, Matsumoto Keiji
We point out that our scheme in manuscript quant-ph/0104127 is misunderstood by Alexander Blais and Andre-Marie S. Tremblay in their recent e-print quant-ph/0105006.