Onestep preparation of cluster states in quantumdot molecules
Abstract
Cluster states, a special type of highly entangled states, are a universal resource for measurementbased quantum computation. Here, we propose an efficient onestep generation scheme for cluster states in semiconductor quantum dot molecules, where qubits are encoded on singlet and triplet states of two coupled quantum dots. By applying a collective electrical field or simultaneously adjusting interdot bias voltages of all doubledot molecules, we get a switchable Isinglike interaction between any two adjacent quantum molecule qubits. The initialization, the singlequbit measurement, and the experimental parameters are discussed. It is shown that preparation of large cluster states and oneway quantum computation are implementable in semiconductor quantum dots with the present techniques.
 Authors:
 Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026 (China)
 Publication Date:
 OSTI Identifier:
 20982433
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.050301; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 74 ATOMIC AND MOLECULAR PHYSICS; ELECTRIC FIELDS; ELECTRIC POTENTIAL; INTERACTIONS; ISING MODEL; MOLECULES; QUANTUM COMPUTERS; QUANTUM DOTS; QUANTUM ENTANGLEMENT; QUBITS; SEMICONDUCTOR MATERIALS; TRIPLETS
Citation Formats
Guo, GuoPing, Zhang, Hui, Tu, Tao, and Guo, GuangCan. Onestep preparation of cluster states in quantumdot molecules. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVA.75.050301.
Guo, GuoPing, Zhang, Hui, Tu, Tao, & Guo, GuangCan. Onestep preparation of cluster states in quantumdot molecules. United States. doi:10.1103/PHYSREVA.75.050301.
Guo, GuoPing, Zhang, Hui, Tu, Tao, and Guo, GuangCan. Tue .
"Onestep preparation of cluster states in quantumdot molecules". United States.
doi:10.1103/PHYSREVA.75.050301.
@article{osti_20982433,
title = {Onestep preparation of cluster states in quantumdot molecules},
author = {Guo, GuoPing and Zhang, Hui and Tu, Tao and Guo, GuangCan},
abstractNote = {Cluster states, a special type of highly entangled states, are a universal resource for measurementbased quantum computation. Here, we propose an efficient onestep generation scheme for cluster states in semiconductor quantum dot molecules, where qubits are encoded on singlet and triplet states of two coupled quantum dots. By applying a collective electrical field or simultaneously adjusting interdot bias voltages of all doubledot molecules, we get a switchable Isinglike interaction between any two adjacent quantum molecule qubits. The initialization, the singlequbit measurement, and the experimental parameters are discussed. It is shown that preparation of large cluster states and oneway quantum computation are implementable in semiconductor quantum dots with the present techniques.},
doi = {10.1103/PHYSREVA.75.050301},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}

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