Photon-Mediated Charge Transport and Stability of Physically-Defined and Self-Organized Germanium Quantum Dots/SON Barriers in Few-Hole Regime at T > 10K

Chi Cheng Lai, Yu Wen Chiu, I. Hsiang Wang, Ting Tsai, Jhih Wei Chen, Yen Hsiang Wang, Mau Chung Frank Chang, Horng Chih Lin, Pei Wen Li*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report, for the first time, photon-mediated charge transport through physically-defined Ge double quantum-dots (DQDs)/Si barrier and QD/Si3N4 single-hole transistor in few-hole regime for high-fidelity qubit operation at T > 10 K. Engineering strengths of size-tunable QDs, self-organized barriers, and self-aligned reservoirs enable controllable tunability of charging energy, level spacing and coupling energy of Ge DQDs by adjusting QD size and barrier width/potential. Hard-wall confinement and photon enhanced carrier transport are facilitated to resolve charge states of DQDs, improve tunneling current properties of SHTs with high peak-to-valley ratio (∼2000), low leakage (∼5 fA), large addition energy (∼50 meV), low 1/f noise (∼10-26 A2/Hz), and achieve DQD-SHT readout fidelity of 99.92% at T > 10K.

Original languageEnglish
Title of host publication2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350361469
DOIs
StatePublished - 2024
Event2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024 - Honolulu, United States
Duration: 16 Jun 202420 Jun 2024

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
ISSN (Print)0743-1562

Conference

Conference2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024
Country/TerritoryUnited States
CityHonolulu
Period16/06/2420/06/24

Keywords

  • Few-hole
  • Fidelity
  • Germanium
  • Quantum Dots
  • SHTs

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