Entanglement and disentanglement in circuit QED architectures

被引：9

作者：

Zueco, David ^{[1
]}

Reuther, Georg M. ^{[1
]}

Haenggi, Peter ^{[1
]}

Kohler, Sigmund ^{[1
,2
]}

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

[2] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2010年 / 42卷 / 03期

关键词：

Circuit QED; Superconducting qubits; Quantum information; SPIN-BOSON MODEL; QUANTUM ELECTRODYNAMICS; STRUCTURED ENVIRONMENT; SUDDEN-DEATH; CAVITY; QUBIT; STATE; DYNAMICS; SYSTEM;

D O I：

10.1016/j.physe.2009.06.074

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We propose a protocol for creating entanglement within a dissipative circuit QED network architecture that consists of two electromagnetic circuits (cavities) and two superconducting qubits. The system interacts with a quantum environment, giving rise to decoherence and dissipation. We discuss the preparation of two separate entangled cavity-qubit states via Landau-Zener sweeps, after which the cavities interact through mechanical a tunable "quantum switch" which is realized with an ancilla qubit. Moreover, we discuss the decay of the resulting entangled two-cavity state due to the influence of the environment, where we focus on the entanglement decay. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：363 / 368

页数：6

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