Characteristics and distinctive features of entanglement in superconducting charge gubits
Abdel-Aty A., Abdel-Aty M., Wahiddin M.R.B., Obada A.-S.F.
PublisherNova Science Publishers, Inc.
Interest in problems of charge qubits connected to measurements of quantum systems has recently increased substantially, in step with dramatic new developments in experimental techniques for studying small quantum systems. We assess the potential of charge qubits in quantum computation and describe some fabrication and implementation challenges. Broad and important applications must be found to justify construction of a quantum computer; the present work proposes a review of both recent experimental and theoretical developments on entanglement and non-classical effects in superconducting charge qubits and consider the prospects for new findings. We discuss general implications of different models of Cooper pair boxes coupling to a heat bath for processes of adiabatic quantum decoherence. The maximum entangled state generations are also reviewed, starting first with qubit-qubit interaction and finishing with a detailed presentation of qubit-qubit interaction with quantized cavity field and decoherence. Illustrative variational calculations were performed to demonstrate the effect on the multi-qubits entanglement. Much of the fundamental interest in entangled states is connected with its practical application ranging from quantum computation, information processing, cryptography, and interferometry to atomic spectroscopy. This enables us to completely characterize the phenomenon of entanglement sharing in the coupling of multi-superconducting charge qubits, a system of both theoretical and experimental interest. � 2011 by Nova Science Publishers, Inc. All rights reserved.