Energies and Entanglement in Multiply-coupled Phase Qubit Systems

Details Energies and Entanglement in Multiply-coupled Phase Qubit Systems Energies and Entanglement in Multiply-coupled Phase Qubit Systems

2009-09-16

arxiv.org/abs/0909.3082v1

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

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1088/1742-6596/150/5/052268

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.

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