Efficient creation of multipartite entanglement in flux qubits
arXiv:0911.5610 · doi:10.1088/0957-4484/21/27/274015
Abstract
We investigate three superconducting flux qubits coupled in a loop. In this setup, tripartite entanglement can be created in a natural, controllable, and stable way. Both generic kinds of tripartite entanglement -the W type as well as the GHZ type entanglement- can be identified among the eigenstates. We also discuss the violation of Bell inequalities in this system and show the impact of a limited measurement fidelity on the detection of entanglement and quantum nonlocality.
15 pages, 7 figures; extended sections on coupling strength, system preparation, and entanglement detection
References in corpus (16)
- DMRG and periodic boundary conditions: a quantum information perspective
- Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
- Entanglement and Tunable Spin-Spin Couplings Between Trapped Ions Using Multiple Transverse Modes
- Randomized benchmarking and process tomography for gate errors in a solid-state qubit
- Quantifying Entanglement with Witness Operators
- Spectroscopy on two coupled flux qubits
- Tuning the Gap of a Superconducting Flux Qubit
- Two-resonator circuit QED: A superconducting quantum switch
- High-fidelity gates in a Josephson qubit
- Nondestructive readout for a superconducting flux qubit
- One-step multi-qubit GHZ state generation in a circuit QED system
- Highly Entangled Ground States in Tripartite Qubit Systems
- Relation between entanglement measures and Bell inequalities for three qubits
- Maximally entangling tripartite protocols for Josephson phase qubits
- Greenberger-Horne-Zeilinger state protocols for fully connected qubit networks
- Superconducting qubits
Cited by in corpus (4)
- Generation and stabilization of a three-qubit entangled W state in circuit QED via quantum feedback control
- Selective darkening of degenerate transitions for implementing quantum controlled-NOT gates
- Tunable coupling between three qubits as a building block for a superconducting quantum computer
- Exploring the Fidelity of Flux Qubit Measurement in Different Bases via the Quantum Flux Parametron