2020/11/02 by A. Srinivasan, I. Farrer, D. A. Ritchie +1
Computer Science · Physics and Astronomy · #Doping #Heterojunction #Modulation (music) #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum sensor #Reliability (semiconductor) #Reproducibility #Spintronics #cond-mat.mes-hall
paper · pdf · doi:10.1063/5.0024923
published as Appl. Phys. Lett. 117, 183101 (2020)
openalex publication_date 2020/11/02 · arxiv created 2020/11/09 · openalex created_date 2020/11/09 · arxiv updated 2020/11/10 · openalex updated_date 2026/08/05
The reproducible operation of quantum electronic devices is a key requirement for future quantum information processing and spintronics applications. Traditionally, quantum devices have been fabricated from modulation-doped heterostructures, where there is an intrinsic lack of reproducibility due to the random potential from ionized donors. Here, we show that we can greatly improve reproducibility over modulation-doped devices by using a completely undoped architecture, with superior uniformity in the confinement potential and more consistent operating voltages for both electron and hole devices. Our results demonstrate that undoped heterostructures have significant advantages over modulation doping for reproducible manufacturing of quantum devices.