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

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Cited by in corpus (21)

• Circuit Quantum Electrodynamics
• Microwave photonics with superconducting quantum circuits
• Generation of Three-Qubit Entangled States using Superconducting Phase Qubits
• Circuit QED and engineering charge based superconducting qubits
• Proposal for generating and detecting multi-qubit GHZ states in circuit QED
• One-step multi-qubit GHZ state generation in a circuit QED system
• Fast multi-qubit gates through simultaneous two-qubit gates
• Fully-connected network of superconducting qubits in a cavity
• Tripartite interactions between two phase qubits and a resonant cavity
• Fast generation of multiparticle entangled state for flux qubits in a circle array of transmission line resonators with tunable coupling
• Controllable high-fidelity quantum state transfer and entanglement generation in circuit QED
• Controlling tripartite entanglement among optical cavities by reservoir engineering
• Controllable anisotropic exchange coupling between spin qubits in quantum dots
• Mediated gates between spin qubits
• Greenberger-Horne-Zeilinger state protocols for fully connected qubit networks
• Controlled-NOT logic with nonresonant Josephson phase qubits
• Efficient creation of multipartite entanglement in flux qubits
• $GHZ$ state generation of three Josephson qubits in presence of bosonic baths
• On wireless connection between Josephson qubits
• Energies and Entanglement in Multiply-coupled Phase Qubit Systems
• Modeling Three and Four Coupled Phase Qubits