4.2 K sensitivity-tunable radio frequency reflectometry of a physically defined p-channel silicon quantum dot

Radio frequency reflectometry and charge sensing of a precision placed donor in silicon

Atomistic Modeling of a Tunable Single-Electron Quantum Dot in Silicon using NEMO3D-peta

Junzhe Geng, Sunhee Lee , Hoon Ryu and Gerhard Klimeck Network for Computational Nanotechnology, Purdue University, West Lafayette, IN 47907, USA Samsung Advanced Institute of Technology, San 14, Nongseo-dong, Giheung-gu, Yongin, Gyeonggi 446-712, Korea Supercomputing Center, Korea Institute of Science and Technology Information (KISTI) 52-11 Eoeun-dong, Yuseong-gu, Daejeon 305-806, Korea *e-ma...

Pauli Spin Blockade in a Highly Tunable Silicon Double Quantum Dot

Double quantum dots are convenient solid-state platforms to encode quantum information. Two-electron spin states can be detected and manipulated using quantum selection rules based on the Pauli exclusion principle, leading to Pauli spin blockade of electron transport for triplet states. Coherent spin states would be optimally preserved in an environment free of nuclear spins, which is achievabl...

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

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 formation of well-defined and long-lived spin qubits. Here we demonstrate that valley separation can be accurately tuned via electrostatic gate control in a metal-oxide-semiconductor quantum dot, providing splittings sp...

A radio-frequency tunable active filter

A design approach for a tunable active filter of constant bandwidth and center-frequency gain is described. The approach is based on a feedback configuration with a complex pole pair in the forward transfer function, and a complex zero pair in the feedback transfer function. Center frequency tuning is achieved with the variation of only one element, a potentiomenter, which controls the feedback...