2006/11/30 by Guo‐Ping Guo, Guo-Ping Guo, Hui Zhang +3 · 47 citations
Computer Science · Physics and Astronomy · #Cluster (spacecraft) #Cluster state #Computer science #Coupled cluster #Excited state #Initialization #Molecule #One-way quantum computer #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum dot #Quantum error correction #Quantum mechanics #Qubit #Singlet state #Trapped ion quantum computer #quant-ph
paper · pdf · doi:10.1103/physreva.75.050301
published in Physical Review A 75(5) (American Physical Society) · 5 pages, 3 figures
arxiv created 2007/04/13 · openalex publication_date 2007/05/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 states of two coupled quantum dots. By applying a collective electrical field or simultaneously adjusting interdot bias voltages of all double-dot molecules, 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. It is shown that preparation of large cluster states and one-way quantum computation are implementable in semiconductor quantum dots with the present techniques.