University of Basel

Department
of Physics

Quantum Coherence Lab - Zumbühl Group

News

RSS
resonator

Published: Charge sensing of a Ge/Si core/shell nanowire double quantum dot using a high-impedance superconducting resonator

Hole spin qubits in Ge/Si core/shell nanowires are promising candidates for scalable quantum information processing. Here, we employ a high-impedance, magnetic field resilient superconducting microwave resonator based on a NbTiN thin-film…
Dominique

Dominique Trüssel joins for master's project

With a bachelor of science from the University of Basel, Dominique Trüssel starts his master's project on "Impedance matching with high Q superconducting resonators". Welcome back to the group and looking forward to working with you.
Carlos

Master of science defense of Carlos Dos Santos

Carlos Dos Santos successfully defended his MSc thesis "Anisotropies in a Silicon FinFET Hole Spin Qubit". Congratulations, Carlos, on the great thesis, and thanks very much for all the work!
SimonDefense

PhD Defense of Simon Geyer

Simon Geyer successfully defended his PhD thesis "Spin qubits in Si fin field-effect transistors", with Dr. Arne Laucht (UNSW Sydney, Australia) as referee, and Dr. Andrea Hofmann as chair. Congratulations, Simon, on the great thesis, and…
Oliver

Oliver Wicki joins for semester project

Oliver Wicki starts his semester project on "Transport characterisation of core/shell Ge/Si nanowires". Welcome to the group and looking forward to working with you.
SKIW

Swiss-Korean Innovation Week 2023

The Swiss-Korean Innovation Week, an annual lighthouse event of the Embassy of Switzerland in the Republic of Korea, was established in 2018 with the aim of facilitating collaboration between Switzerland and Korea in the field of research…
James

James Mingchi Xu joining as a PhD student

With a MSc degree from the University of Copenhagen with title "Superconductor Double Nanowire Interference Device" and previously a BSc from Kenyon College, James Mingchi Xu is starting his PhD project on microkelvin quantum transport.…
backaction

Published in Physical Review Research: Measurement-induced population switching

The act of measurement in quantum mechanics imparts backaction and fundamentally impacts the measured object. In this work, we show how increasing the bias on the charge sensor (pink) changes the charge stability diagram of the double dot…
WQD

World Quantum Day Fri Apr 14: Live from the SPIN Lab!

The World Quantum Day was celebrated with a flurry of acitivites around the globe, see official web page, https://worldquantumday.org/upcoming-events/ Some of our own activities: NCCR SPIN video 2023: What do our young researches think…
SRF2

Swiss radio show "Kontext" on Tinguely Entangled: quantum physics made audible

The Swiss Radio show "Kontext" had a special on the recent Tinguely Entangled performace, featuring Linda Leimane, Dominik Zumbühl and several others. The radio broadcast, "Klingende Quantenphysik: Wenn Musik den Quantencomputer erklärt",…
Symposium

US-CH Quantum Symposium at Uptown Basel

The US-CH quantum symposium brings together scientists working on quantum computing from both the United States and Switzerland at the Uptown Basel campus, combining efforts in academia and industry, on Mon/Tue March 27/28, 2023, organized…
Tinguely Photo

Tinguely Entangled: concert and art installation on spin qubits and quantum computation

The Tinguely Museum with its kinetic sculptures served as the stage for a performance of a piece of music especially composed by Linda Leimane in order to make some of the key quantum physics concepts lying at the heart of quantum computing…
SimonG

Simon Geyer Wins the APS Distinguished Student Award

Simon Geyer Wins the APS Distinguished Student Award
phase

On arXiv: Phase driving hole spin qubits

The spin-orbit interaction in spin qubits enables spin-flip transitions, resulting in Rabi oscillations when an external microwave field is resonant with the qubit frequency. Here, we introduce an alternative driving mechanism of hole spin…
sto

On arXiv: Hyperabrupt STO varactors for mK quantum dot reflectometry

Radio frequency reflectometry for qubit readout enables high bandwidth but requires careful impedance matching which is challenging to do in-situ at mK temperatures due to freeze-out of GaAs varactors. We present a design employing…
To top