Quantum deficits and correlations of two superconducting charge qubits

2008/05/29 by N. Metwally, Nasser Metwally, Mahmoud Abdel‐Aty +1
Computer Science · Physics and Astronomy · #Charge (physics) #Cluster state #Entanglement distillation #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum information #Quantum mechanics #Qubit #Superconducting quantum computing #Superconductivity #quant-ph

paper · pdf · doi:10.1016/j.physc.2008.12.011

published as Physica C: Volume 469, Issues 2-3, 1 February 2009, Pages 111-115

arxiv created 2008/05/29 · openalex publication_date 2008/12/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Motivated by recent experiments [Pashkin et al. Nature, 421, 823 (2003)] which showed coherent oscillations of two superconducting qubits system, we consider a system of two charge qubits coupled to a common stripline microwave resonator. We discuss the separable and entangled behavior as well as the quantum and classical information deficits. Numerical computation of these quantities for several regimes is performed. We find that for less entangled states the partner can extract much more information by means of classical communication and local operations

Citations

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