One-step preparation of cluster states in quantum dot molecules

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.

5 pages, 3 figures

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Cited by in corpus (15)

• Generation of quantum-dot cluster states with superconducting transmission line resonator
• Efficient generation of universal two-dimensional cluster states with hybrid systems
• Cluster-type entangled coherent states
• Measurement-Based Quantum Computation
• Dispersive Coupling Between the Superconducting Transmission Line Resonator and the Double Quantum Dots
• Tailored cluster states with high threshold under biased noise
• Quantum Computation and Bell-state Measurement with Double-Dot Molecules
• Symmetric reflection line resonator for semiconductor circuit quantum electrodynamics
• Error-correcting one-way quantum computation with global entangling gates
• An unconventional geometric phase gate with two nonresonant quantum dots trapped in a photonic crystal cavity
• Eliminating interactions between non-neighboring qubits in the preparation of cluster states in quantum molecules
• Coupled cluster theory for the ground and excited states of two dimensional quantum dots
• Scalable quantum computation architecture using always-on Ising interactions via quantum feedforward
• The Fidelity of Measurement-Based Quantum Computation under a Boson Environment
• Discrete quantum Fourier transform in coupled semiconductor double quantum dot molecules