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

References in corpus (4)

• Resource-efficient linear optical quantum computation
• Universal set of quantum gates for double-dot spin qubits with fixed interdot coupling
• Producing cluster states in charge qubits and flux qubits
• Quantum gates between capacitively coupled double quantum dot two-spin qubits

Cited by in corpus (7)

• Generation of quantum-dot cluster states with superconducting transmission line resonator
• Cluster-type entangled coherent states
• Dispersive Coupling Between the Superconducting Transmission Line Resonator and the Double Quantum Dots
• Quantum Computation and Bell-state Measurement with Double-Dot Molecules
• Error-correcting one-way quantum computation with global entangling gates
• Eliminating interactions between non-neighboring qubits in the preparation of cluster states in quantum molecules
• Discrete quantum Fourier transform in coupled semiconductor double quantum dot molecules