Robustness of Charge-Qubit Cluster States to Double Quantum Point Contact Measurement

Abstract

We theoretically investigate the robustness of cluster states in charge qubit system based on quantum dot (QD) and double quantum point contact (DQPC). Trap state is modeled by an island structure in DQPC and represents a dynamical fluctuation. We found that the dynamical fluctuations affect the cluster states more than static fluctuation caused by QD size fluctuation.

5 pages, 4 figures

References in corpus (5)

• Producing cluster states in charge qubits and flux qubits
• Entanglement between charge qubits induced by a common dissipative environment
• Qubit measurements with a double-dot detector
• Simultaneous readout of two charge qubits
• The Effect of Local Structure and Non-uniformity on Decoherence-Free States of Charge Qubits

Cited by in corpus (1)

• Steady-state solution for dark states using a three-level system in coupled quantum dots