Modeling and Control of Quantum Measurement-Induced Backaction in Double Quantum Dots

2017/12/11 by Wei Cui, Daoyi Dong
Computer Science · Mathematics · Physics and Astronomy · #Master equation #Mechanical and Optical Resonators #Open quantum system #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dissipation #Quantum error correction #Quantum master equation #Quantum operation #Quantum process #Quantum tunnelling #math.OC #quant-ph

paper · pdf · doi:10.1109/tcst.2018.2871790

arxiv created 2017/12/11 · openalex created_date 2017/12/22 · openalex publication_date 2018/10/08 · arxiv updated 2018/12/14 · openalex updated_date 2026/08/05

Abstract

Quantum measurements disturb the quantum system being measured, and this is known as measurement-induced backaction. In this paper, we consider a double quantum dot monitored by a nearby quantum point contact, where the measurement-induced backaction plays an important role. Taking advantage of the quantum master equation approach, we calculate the tunneling current and propose a simple feedback-control law to realize and stabilize the tunneling current. Theoretical analysis and numerical simulations show that the feedback control law can make the current quickly convergent to the desired value.

Citations

• Unambiguous discrimination of special sets of multipartite states using local measurements and classical communication
• Spontaneous Relaxation of a Charge Qubit under Electrical Measurement
• Experimental Feedback Control of Quantum Systems Using Weak Measurements
• High-fidelity hot gates for generic spin-resonator systems
• Strong Coupling Cavity QED with Gate-Defined Double Quantum Dots Enabled by a High Impedance Resonator