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One-step preparation of cluster states in quantum dot molecules

Guo-Ping Guo·Hui Zhang·Tao Tu·Guang-Can Guo
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Abstract

Cluster states, a special type of highly entangled states, are a universal resource for measurement-based quantum computation. Here, we propose an efficient one-step generation scheme for cluster states in semiconductor quantum dot molecules, where qubits are encoded on singlet and triplet state of two coupled quantum dots. By applying a collective electrical field or simultaneously adjusting interdot bias voltages of all double-dot molecule, we get a switchable Ising-like interaction between any two adjacent quantum molecule qubits. The initialization, the single qubit measurement, and the experimental parameters are discussed, which shows the large cluster state preparation and one-way quantum computation implementable in semiconductor quantum dots with the present techniques.

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Guo-Ping Guo, Hui Zhang, Tao Tu, Guang-Can Guo. 2007-04-13. One-step preparation of cluster states in quantum dot molecules. https://doi.org/10.1103/physreva.75.050301

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