skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Quantum computation and W-state generation using superconducting flux qubits coupled to a cavity without geometric and dynamical manipulation

Abstract

Based on superconducting quantum interference devices (SQUID's) coupled to a cavity, we propose a scheme for implementing a quantum phase-shift gate and generating a W state by an adiabatic evolution of dark eigenstates, without any contributions from dynamical and geometric gates. The Sole requirement is of adiabatically increasing or decreasing Rabi frequencies of classical microwave pluses. Thus, the manipulation is robust against certain types of errors. We also analyze the experimental possibility that identical coupling can be achieved between SQUID qubits and cavity fields, and the cavity decay can be ignored in certain conditions. Based on a simple operation, our scheme may be realized in this solid-state system.

Authors:
 [1];  [2]; ; ;  [1]
  1. Department of Physics and Electronic Information Science, Huaihua University, Huaihua, Hunan, 418008 (China)
  2. (China)
Publication Date:
OSTI Identifier:
20982293
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.032347; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ADIABATIC APPROXIMATION; EIGENSTATES; MICROWAVE RADIATION; PHASE SHIFT; QUANTUM COMPUTERS; QUANTUM ENTANGLEMENT; QUANTUM MECHANICS; QUBITS; SQUID DEVICES

Citation Formats

Song, Ke-Hui, Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Xiang, Shao-Hua, Liu, Qiong, and Lu, De-Hua. Quantum computation and W-state generation using superconducting flux qubits coupled to a cavity without geometric and dynamical manipulation. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.032347.
Song, Ke-Hui, Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Xiang, Shao-Hua, Liu, Qiong, & Lu, De-Hua. Quantum computation and W-state generation using superconducting flux qubits coupled to a cavity without geometric and dynamical manipulation. United States. doi:10.1103/PHYSREVA.75.032347.
Song, Ke-Hui, Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Xiang, Shao-Hua, Liu, Qiong, and Lu, De-Hua. Thu . "Quantum computation and W-state generation using superconducting flux qubits coupled to a cavity without geometric and dynamical manipulation". United States. doi:10.1103/PHYSREVA.75.032347.
@article{osti_20982293,
title = {Quantum computation and W-state generation using superconducting flux qubits coupled to a cavity without geometric and dynamical manipulation},
author = {Song, Ke-Hui and Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 and Xiang, Shao-Hua and Liu, Qiong and Lu, De-Hua},
abstractNote = {Based on superconducting quantum interference devices (SQUID's) coupled to a cavity, we propose a scheme for implementing a quantum phase-shift gate and generating a W state by an adiabatic evolution of dark eigenstates, without any contributions from dynamical and geometric gates. The Sole requirement is of adiabatically increasing or decreasing Rabi frequencies of classical microwave pluses. Thus, the manipulation is robust against certain types of errors. We also analyze the experimental possibility that identical coupling can be achieved between SQUID qubits and cavity fields, and the cavity decay can be ignored in certain conditions. Based on a simple operation, our scheme may be realized in this solid-state system.},
doi = {10.1103/PHYSREVA.75.032347},
journal = {Physical Review. A},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}