Interfacing spin qubits in quantum dots and donors—hot, dense, and coherent

LMK Vandersypen, H Bluhm, JS Clarke… - npj Quantum …, 2017‏ - nature.com
Semiconductor spins are one of the few qubit realizations that remain a serious candidate
for the implementation of large-scale quantum circuits. Excellent scalability is often argued …

High-fidelity spin qubit operation and algorithmic initialization above 1 k

JY Huang, RY Su, WH Lim, MK Feng, B Van Straaten… - Nature, 2024‏ - nature.com
The encoding of qubits in semiconductor spin carriers has been recognized as a promising
approach to a commercial quantum computer that can be lithographically produced and …

Scalable gate architecture for a one-dimensional array of semiconductor spin qubits

DM Zajac, TM Hazard, X Mi, E Nielsen, JR Petta - Physical Review Applied, 2016‏ - APS
We demonstrate a 12-quantum-dot device fabricated on an undoped Si/SiGe heterostructure
as a proof of concept for a scalable, linear gate architecture for semiconductor quantum dots …

Spin-valley lifetimes in a silicon quantum dot with tunable valley splitting

CH Yang, A Rossi, R Ruskov, NS Lai… - Nature …, 2013‏ - nature.com
Although silicon is a promising material for quantum computation, the degeneracy of the
conduction band minima (valleys) must be lifted with a splitting sufficient to ensure the …

Gate-controlled quantum dots and superconductivity in planar germanium

NW Hendrickx, DP Franke, A Sammak… - Nature …, 2018‏ - nature.com
Superconductors and semiconductors are crucial platforms in the field of quantum
computing. They can be combined to hybrids, bringing together physical properties that …

On-demand electrical control of spin qubits

W Gilbert, T Tanttu, WH Lim, MK Feng… - Nature …, 2023‏ - nature.com
Once called a 'classically non-describable two-valuedness' by Pauli, the electron spin forms
a qubit that is naturally robust to electric fluctuations. Paradoxically, a common control …

[HTML][HTML] A reconfigurable gate architecture for Si/SiGe quantum dots

DM Zajac, TM Hazard, X Mi, K Wang… - Applied Physics Letters, 2015‏ - pubs.aip.org
We demonstrate a reconfigurable quantum dot gate architecture that incorporates two
interchangeable transport channels. One channel is used to form quantum dots, and the …

Bounds to electron spin qubit variability for scalable CMOS architectures

JD Cifuentes, T Tanttu, W Gilbert, JY Huang… - Nature …, 2024‏ - nature.com
Spins of electrons in silicon MOS quantum dots combine exquisite quantum properties and
scalable fabrication. In the age of quantum technology, however, the metrics that crowned …

SiGe quantum wells with oscillating Ge concentrations for quantum dot qubits

T McJunkin, B Harpt, Y Feng, MP Losert… - Nature …, 2022‏ - nature.com
Large-scale arrays of quantum-dot spin qubits in Si/SiGe quantum wells require large or
tunable energy splittings of the valley states associated with degenerate conduction band …

Modeling semiconductor spin qubits and their charge noise environment for quantum gate fidelity estimation

MMEK Shehata, G Simion, R Li, FA Mohiyaddin, D Wan… - Physical Review B, 2023‏ - APS
The spin of an electron confined in semiconductor quantum dots is currently a promising
candidate for quantum bit (qubit) implementations. Taking advantage of the existing CMOS …