On the generation of multipartite entangled states in Josephson architectures

Abstract

We propose and analyze a scheme for the generation of multipartite entangled states in a system of inductively coupled Josephson flux qubits. The qubits have fixed eigenfrequencies during the whole process in order to minimize decoherence effects and their inductive coupling can be turned on and off at will by tuning an external control flux. Within this framework, we will show that a W state in a system of three or more qubits can be generated by exploiting the sequential one by one coupling of the qubits with one of them playing the role of an entanglement mediator.

10 pages, 3 figures

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Cited by in corpus (14)

• Fully-connected network of superconducting qubits in a cavity
• Dissipation and entanglement dynamics for two interacting qubits coupled to independent reservoirs
• Resonant Scattering Can Enhance the Degree of Entanglement
• Entanglement creation in circuit QED via Landau-Zener sweeps
• Production of multipartite entanglement for electron spins in quantum dots
• Robust stationary entanglement of two coupled qubits in independent environments
• Entanglement Generation by Qubit Scattering in Three Dimensions
• On demand entanglement in double quantum dots via coherent carrier scattering
• Extraction of an Entanglement by Repetition of the Resonant Transmission of an Ancilla Qubit
• Shortcuts to adiabaticity in superconducting circuits for fast multi-partite state generation
• $GHZ$ state generation of three Josephson qubits in presence of bosonic baths
• Diffusion and transfer of entanglement in an array of inductively coupled flux qubits
• Entangled Probability Distributions for Center-of-Mass Tomography
• Entanglement Generation by a Three-Dimensional Qubit Scattering: Concurrence vs. Path (In)Distinguishability