Multipartite Entanglement Generation Assisted by Inhomogeneous Coupling

Abstract

We show that controllable inhomogeneous coupling between two-level systems and a common data bus provides a fast mechanism to produce multipartite entanglement. Our proposal combines resonant interactions and engineering of coupling strengths---between the qubits and the single mode---leading to well defined entangled states. Furthermore, we show that, if the two-level systems interact dispersively with the quantized mode, engineering of coupling strengths allows the controlled access of the symmetric Hilbert space of qubits.

5 pages, 4 figures. Submitted for publication

References in corpus (13)

• Quantum Computing
• Charge insensitive qubit design derived from the Cooper pair box
• Coupling Superconducting Qubits via a Cavity Bus
• Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Dressed Collective Qubit States and the Tavis-Cummings Model in Circuit QED
• Using Sideband Transitions for Two-Qubit Operations in Superconducting Circuits
• Control and Tomography of a Three Level Superconducting Artificial Atom
• Generation of Symmetric Dicke States of Remote Qubits with Linear Optics
• Robust creation of arbitrary-sized Dicke states using a single laser pulse
• Decoherence-free preparation of Dicke states of trapped ions by collective stimulated Raman adiabatic passage
• Selective Control of the Symmetric Dicke Subspace in Trapped Ions
• Arbitrary control of multiple-qubit systems in the symmetric Dicke subspace

Cited by in corpus (4)

• Non-equilibrium correlations and entanglement in a semiconductor hybrid circuit-QED system
• Dynamics and non-equilibrium steady state in a system of coupled harmonic oscillators
• Squeezing of Collective Excitations in Spin Ensembles
• Quasi-lattices of qubits for generating inequivalent multipartite entanglements