Maximally entangling tripartite protocols for Josephson phase qubits

Abstract

We introduce a suit of simple entangling protocols for generating tripartite GHZ and W states in systems with anisotropic exchange interaction g(XX+YY)+g'ZZ. An interesting example is provided by macroscopic entanglement in Josephson phase qubits with capacitive (g'=0) and inductive (0<|g'/g|<0.1) couplings.

6 pages, no figures

References in corpus (2)

• Generation of high-fidelity controlled-not logic gates by coupled superconducting qubits
• Single-step controlled-NOT logic from any exchange interaction

Cited by in corpus (4)

• Proposal for generating and detecting multi-qubit GHZ states in circuit QED
• Fully-connected network of superconducting qubits in a cavity
• Energies and Entanglement in Multiply-coupled Phase Qubit Systems
• Modeling Three and Four Coupled Phase Qubits