Quantum-state transfer in imperfect artificial spin networks

M. Paternostro, G. M. Palma, M. S. Kim, and G. Falci
Phys. Rev. A 71, 042311 – Published 5 April 2005

Abstract

High-fidelity quantum computation and quantum state transfer are possible in short spin chains. We exploit a system based on a dispersive qubit-boson interaction to mimic XY coupling. In this model, the usually assumed nearest-neighbor coupling is no longer valid: all the qubits are mutually coupled. We analyze the performances of our model for quantum state transfer showing how preengineered coupling rates allow for nearly optimal state transfer. We address a setup of superconducting qubits coupled to a microstrip cavity in which our analysis may be applied.

  • Figure
  • Figure
  • Figure
  • Received 20 July 2004

DOI:https://doi.org/10.1103/PhysRevA.71.042311

©2005 American Physical Society

Authors & Affiliations

M. Paternostro1, G. M. Palma2, M. S. Kim1, and G. Falci3

  • 1School of Mathematics and Physicis, The Queen’s University, Belfast BT7 1NN, United Kingdom
  • 2NEST-INFM & Dipartimento di Tecnologie dell’Informazione, Universita’ di Milano, Via Bramante 65, 26013 Crema, Italy
  • 3MATIS-INFM & Dipartimento di Metodologie Fisiche e Chimiche, Universita’ di Catania, Viale A. Doria 6, 95125 Catania, Italy

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 71, Iss. 4 — April 2005

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×