One-step multi-qubit GHZ state generation in a circuit QED system

Abstract

We propose a one-step scheme to generate GHZ states for superconducting flux qubits or charge qubits in a circuit QED setup. The GHZ state can be produced within the coherence time of the multi-qubit system. Our scheme is independent of the initial state of the transmission line resonator and works in the presence of higher harmonic modes. Our analysis also shows that the scheme is robust to various operation errors and environmental noise.

8 pages, 4 figures

References in corpus (13)

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• Highly Entangled Ground States in Tripartite Qubit Systems
• Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus
• Protecting entanglement in superconducting qubits
• Numerical evaluation of convex-roof entanglement measures with applications to spin rings
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Cited by in corpus (23)

• Microwave photonics with superconducting quantum circuits
• Ultrastrong coupling regimes of light-matter interaction
• Ultrafast Quantum Gates in Circuit QED
• Nondeterminstic ultrafast ground state cooling of a mechanical resonator
• Simple preparation of Bell and GHZ states using ultrastrong-coupling circuit QED
• Creation of quantum error correcting codes in the ultrastrong coupling regime
• Resource-efficient analyzer of Bell and Greenberger-Horne-Zeilinger states of multiphoton systems
• Greenberger-Horne-Zeilinger generation protocol for N superconducting transmon qubits capacitively coupled to a quantum bus
• Equivalence between Redfield and master equation approaches for a time-dependent quantum system and coherence control
• Deterministic generation of arbitrary symmetric states and entanglement classes
• Quantum metrology including state preparation and readout times
• Fast generation of multiparticle entangled state for flux qubits in a circle array of transmission line resonators with tunable coupling
• Superconducting Qubit-Resonator-Atom Hybrid System
• Greenberger-Horne-Zeilinger states and few-body Hamiltonians
• Multiplex-controlled phase gate with qubits distributed in a multi-cavity system
• Testing tripartite Mermin inequalities by spectral joint-measurements of qubits
• Hole burning in a nanomechanical resonator coupled to a Cooper pair box
• Efficient creation of multipartite entanglement in flux qubits
• Multi-qubit Quantum Rabi Model and Multi-partite Entangled States in a Circuit QED System
• Realizing flexible two-qubit controlled phase gate with a hybrid solid-state system
• Ideal Quantum non-demolishing measurement of a flux qubit at variable bias
• Entanglement concentration with different measurement in a 3-mode optomechanical system
• Single-step multipartite entangled states generation from coupled circuit cavities