Generation of the Cluster States using Double Quantum Dots in Circuit QED

Abstract

The cluster state quantum computation is a versatile approach to build a scalable quantum computer. In this thesis we theoretically demonstrate that a one dimensional array of double quantum dots with long spin relaxation time can evolve to a cluster state via capacitive coupling to a transmission line resonator. By applying an oscillating voltage to gates of the double quantum dots, we prove that the evolution operator for such interaction is an Ising-like operator. Subsequently, the interacting qubits will become highly entangled that we realize a cluster state. Furthermore, we propose an experiment to investigate validity of our theoretical method. Considering the current advanced technology in semiconductor nanofabrication, our proposed structure can be integrated on a chip where provides scalability and convenient control of the qubits. The scalability of our scheme implies that we can expand this structure to higher dimensional arrays of the qubits where paves the way for further experimental investigation on the theory of measurement-based quantum computation.

Honors project with original proposal, Scientific comments are most welcome

References in corpus (9)

• Spins in few-electron quantum dots
• Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
• Relaxation, dephasing, and quantum control of electron spins in double quantum dots
• Suppressing Spin Qubit Dephasing by Nuclear State Preparation
• Quantum information processing and multiatom entanglement engineering with a thermal cavity
• Efficient one-step generation of large cluster states with solid-state circuits
• Generation of quantum-dot cluster states with superconducting transmission line resonator
• Dispersive Coupling Between the Superconducting Transmission Line Resonator and the Double Quantum Dots
• Cavity quantum electrodynamics with semiconductor double-dot molecules on a chip