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Quantum-State Control with a Single-Cooper-Pair Box

Yasunobu Nakamura, J. S. Tsai

Journal of Low Temperature PhysicsMar 1, 200016 citations

Entangling pairs of nano-cantilevers, Cooper-pair boxes and mesoscopic teleportation

Sougato Bose, G. S. Agarwal

We propose two schemes to establish entanglement between two mesoscopic quantum systems through a third mesoscopic quantum system. The first scheme entangles two nano-mechanical oscillators in a non-Gaussian entangled state through a Cooper-pair box (CPB). Entanglement detection of the nano-mechanical oscillators is equivalent to a teleportation experiment in a mesoscopic setting. The second scheme can entangle two CPB qubits through a nano-mechanical oscillator in the presence of arbitrarily strong decoherence.We propose two schemes to establish entanglement between two mesoscopic quantum systems through a third mesoscopic quantum system. The first scheme entangles two nano-mechanical oscillators in a non-Gaussian entangled state through a Cooper-pair box (CPB). Entanglement detection of the nano-mechanical oscillators is equivalent to a teleportation experiment in a mesoscopic setting. The second scheme can entangle two CPB qubits through a nano-mechanical oscillator in the presence of arbitrarily strong decoherence.

arXiv:cond-mat/0510676New Journal of PhysicsMar 7, 200626 citations

Quantum Teleportation via Hybrid Entangled States

Xiong, Wen-Yuan, Wang +1 more

理论物理通讯：英文版Jan 1, 20070 citations

Multi-state Quantum Teleportation via One Entanglement State

Guo Guo, Ying, Zeng +4 more

理论物理通讯：英文版Jan 1, 20080 citations

Generation of entangled coherent states of two cavity fields via coupling to a SQUID-based charge qubit

Jie‐Qiao Liao, Le‐Man Kuang

We propose a scheme to generate entangled coherent states (ECSs) of two microwave cavity fields coupling to a SQUID-based Cooper pair box (CPB) charge qubit by extending the single-cavity model of coupling between a single microcavity and a CPB charge qubit proposed by Liu et al (2005 Phys. Rev. A 71 063820). We show that by measuring the states of the CPB charge qubit, ECSs of the two cavity fields can be generated with a controllable interaction between the cavities and the CPB charge qubit.

Journal of Physics B Atomic Molecular and Optical PhysicsMay 1, 200715 citations

Quantum Entropy of a Cooper-Pair Box in a Single-Mode Cavity Field

张春雨, 邹健, 邵彬

A Cooper-pair box biased by a classical voltage and also irradiated by a squeezed state field is considered in order to find new ways to quantum communication and calculation. The quantum dynamics of the Cooper-pair box and the entanglement which is the core theoretics of quantum communication and calculation is investigated in this system, which is related to the squeezing parameter of the squeezed state. A model of Hamiltonian which represents the interaction between box and quantum field is introduced. Finally, the relationship between the entanglement and the squeezing parameter of the squeezed state is demonstrated.A Cooper-pair box biased by a classical voltage and also irradiated by a squeezed state field is considered in order to find new ways to quantum communication and calculation. The quantum dynamics of the Cooper-pair box and the entanglement which is the core theoretics of quantum communication and calculation is investigated in this system, which is related to the squeezing parameter of the squeezed state. A model of Hamiltonian which represents the interaction between box and quantum field is introduced. Finally, the relationship between the entanglement and the squeezing parameter of the squeezed state is demonstrated.

北京理工大学学报：英文版Jan 1, 20050 citations

Maximum entangled states and quantum teleportation via single Cooper pair box

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