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Energies and entanglement in multiply-coupled phase qubit systems

2009/03/01 by Z. Thrailkill, Z Thrailkill, S. Kennerly +5
Computer Science · Physics and Astronomy · #Flux qubit #Josephson effect #Phase qubit #Physics of Superconductivity and Magnetism #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum entanglement #Quantum teleportation #Qubit #Superconducting quantum computing #W state #cond-mat.supr-con

paper · pdf · doi:10.1088/1742-6596/150/5/052268

published as J. Phys: Conf. Ser. 150, 052268 (2009)

openalex publication_date 2009/03/01 · arxiv created 2009/09/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The superconducting Josephson junction has been demonstrated to be a strong candidate for building quantum bits or "qubits" which are the components of a future quantum computer. In recent years, considerable theoretical and experimental effort have been focused on studying quantum properties of single qubits and two coupled solid-state qubits. We present results of numerical simulations of the energy spectra of more three phase qubits that are capacitively-coupled in different configurations. We discuss the ensuing entanglement between component qubits as manifested in avoided crossings and how these may play a role in building gates and transmitting qubit state information.

Citations