Strategies for Enhancing Spin-Shuttling Fidelities in / Quantum Wells with Random-Alloy Disorder

MP Losert, M Oberländer, JD Teske, M Volmer… - PRX Quantum, 2024 - APS
Coherent coupling between distant qubits is needed for many scalable quantum computing
schemes. In quantum dot systems, one proposal for long-distance coupling is to coherently …

Progress of Gate‐Defined Semiconductor Spin Qubit: Host Materials and Device Geometries

Y Liu, S Guan, JW Luo, SS Li - Advanced Functional Materials, 2024 - Wiley Online Library
Quantum computing offers the potential to revolutionize information processing by exploiting
the principles of quantum mechanics. Among the diverse quantum bit (qubit) technologies …

Tomography of entangling two-qubit logic operations in exchange-coupled donor electron spin qubits

HG Stemp, S Asaad, MR Blankenstein… - Nature …, 2024 - nature.com
Scalable quantum processors require high-fidelity universal quantum logic operations in a
manufacturable physical platform. Donors in silicon provide atomic size, excellent quantum …

Electronic Wigner-molecule polymeric chains in elongated silicon quantum dots and finite-length quantum wires

A Goldberg, C Yannouleas, U Landman - Physical Review Applied, 2024 - APS
The spectral properties of electrons confined in a wirelike quasi-one-dimensional (1D)
elongated quantum dot coupler between silicon qubits are investigated with a valley …

Vertical gate-defined double quantum dot in a strained germanium double quantum well

H Tidjani, A Tosato, A Ivlev, C Déprez, S Oosterhout… - Physical Review …, 2023 - APS
Gate-defined quantum dots in silicon-germanium heterostructures have become a
compelling platform for quantum computation and simulation. Thus far, developments have …

Valleytronic full configuration-interaction approach: Application to the excitation spectra of Si double-dot qubits

C Yannouleas, U Landman - Physical Review B, 2022 - APS
A study of the influence of strong electron-electron interactions and Wigner-molecule
formation on the spectra of 2 e singlet-triplet double-dot Si qubits is presented based on a …

Methods for transverse and longitudinal spin-photon coupling in silicon quantum dots with intrinsic spin-orbit effect

KS Guo, MK Feng, JY Huang, W Gilbert, KM Itoh… - arXiv preprint arXiv …, 2023 - arxiv.org
In a full-scale quantum computer with a fault-tolerant architecture, having scalable, long-
range interaction between qubits is expected to be a highly valuable resource. One …

Elongated quantum dot as a distributed charge sensor

SM Patomäki, J Williams, F Berritta, C Lainé… - Physical Review …, 2024 - APS
Increasing the separation between semiconductor quantum dots offers scaling advantages
by facilitating gate routing and the integration of sensors and charge reservoirs. Elongated …

Latest Advancements in Next-Generation Semiconductors: Materials and Devices for Wide Bandgap and 2D Semiconductors

Z Wang, JK Huang - Micromachines, 2023 - mdpi.com
Semiconductor materials, devices, and systems have become indispensable pillars
supporting the modern world, deeply ingrained in various facets of our daily lives [1, 2]. In …

Noise Correlations in a 1D Silicon Spin Qubit Array

MB Donnelly, J Rowlands, L Kranz, YL Hsueh… - arXiv preprint arXiv …, 2024 - arxiv.org
Correlated noise across multi-qubit architectures is known to be highly detrimental to the
operation of error correcting codes and the long-term feasibility of quantum processors. The …