Geometric quantum computation and multi-qubit entanglement with superconducting charge qubits inside a cavity
Abstract
We analyze a new scheme for quantum information processing, with superconducting charge qubits coupled through a cavity mode, in which quantum manipulations are insensitive to the state of the cavity. We illustrate how to physically implement universal quantum computation as well as multi-qubit entanglement based on unconventional geometric phase shifts in this scalable solid-state system. Some quantum error-correcting codes can also be easily constructed using the same technique. In view of the gate dependence on just global geometric features and the insensitivity to the state of cavity modes, the proposed quantum operations may result in high-fidelity quantum information processing.
Cite
@article{arxiv.quant-ph/0403004,
title = {Geometric quantum computation and multi-qubit entanglement with superconducting charge qubits inside a cavity},
author = {Shi-Liang Zhu and Z. D. Wang and Paolo Zanardi},
journal= {arXiv preprint arXiv:quant-ph/0403004},
year = {2009}
}
Comments
4 pages, corrected some errors, accepted for publication in Phys. Rev. Lett