Eliminating interactions between non-neighboring qubits in the preparation of cluster states in quantum molecules

Guo-Ping Guo (), Xiao-Jie Hao, Tao Tu (), Zhi-Cheng Zhu and Guang-Can Guo

The European Physical Journal B: Condensed Matter and Complex Systems, 2008, vol. 61, issue 2, 141-146

Abstract: We propose a scheme to eliminate the effect of non-nearest-neighbor qubits in preparing cluster state with double-dot molecules. As the interaction Hamiltonians between qubits are Ising-model and mutually commute, we can get positive and negative effective interactions between qubits to cancel the effect of non-nearest-neighbor qubits by properly changing the electron charge states of each quantum dot molecule. The total time for the present multi-step cluster state preparation scheme is only doubled for one-dimensional qubit chain and tripled for two-dimensional qubit array comparing with the time of previous protocol leaving out the non-nearest-neighbor interactions. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Keywords: 03.67.Mn Entanglement production, characterization, and manipulation, 03.67.Lx Quantum computation, 73.23.Hk Coulomb blockade; single-electron tunneling, (search for similar items in EconPapers)
Date: 2008
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10.1140/epjb/e2008-00053-9 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:61:y:2008:i:2:p:141-146

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/e2008-00053-9

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().