University of Basel

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Quantum Coherence Lab - Zumbühl Group

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APS2025

APS Joint March Meeting and April Meeting 2025, Anaheim

Germanium Hole-Spin Qubits. Chair: Dominik Zumbuhl (University of Basel) 8:00 am – 11:00 am, Monday March 17, Session MAR-A19: All-electrical operation of a spin qubit coupled to a high-Q resonator  Presenter: Rafael S Eggli (University…
bias

On arXiv: Finite-Bias Coulomb Blockade Thermometry

Temperature is a key parameter in quantum devices, where different degrees of freedom can decouple and exhibit intricate thermodynamics. Coulomb blockade thermometers (CBTs) are versatile and, in principle, primary thermometers operating…
coupling

Published in Phys. Rev. Research: Coupling a high-Q resonator to a spin qubit with all-electrical control

High-Q resonators make possible fast spin readout but are susceptible to crosstalk and suffer from ringup due to qubit control pulses. Here, we report on the coherent and all-electrical control of a Si:FinFET hole spin qubit at 1.5 K with a…
pcsi

Conference on the Physics and Chemistry of Surfaces and Interfaces of the AVS

The 50th conference on the Physics and Chemistry of Surfaces and Interfaces, organized by the American Vacuum Society (AVS), took place in Kona-Kailua on the beautiful big island of Hawai. Co-chaired by Chris Palmstrom (UCSB) and Paul…
LLfig

On ArXiv: Giant end-tunneling effect in two distinct Luttinger liquids coexisting in one quantum wire

We combine tunneling spectroscopy with density-dependent transport measurements in the same quantum wires over more than two orders of magnitude in temperature to very low temperatures down to ∼40 mK. This reveals that, when the second 1D…
Ilya G.

/ Research, People

Ilya Golokolenov joining as a Postdoctoral researcher

With a Ph.D degree from the Université Grenoble Alpes, and M.Sc. degree from Moscow Institute of Physics and Technology, Ilya is starting as a postdoctoral researcher in our group!
dinner

Group Dinner 2024

Our group dinner was a great evening of rhetoric and culinary delight! Franco also surprised us not only with a speech but also with a great saxophone performance with all-time classics from Napoli (and Italy at large)! As usual, we made…
SRF Tagessch dmz

/ Events, People, Campus

IonQ Inauguration at Quantum Basel: Dominik on SRF Tagesschau

Today, the first commercial quantum computer in Switzerlnd was inaugurated at the Quantum Basel labs in Arlesheim, with Dominik Zumbühl commenting on the Swiss TV SRF Tagesschau (see 22:30), including some shots in the NCCR SPIN…
Kristupas

/ Doctorate/PhD, People

Kristupas Razas joining as a PhD student

With a MSc degree from ETH Zurich, and BSc degree from Vilnius University, Kristupas is starting his PhD project in the spin-qubit team.
SQ6

/ Events

Spin Qubit 6 conference in Sydney, Australia

The Spin Qubit 6 conference is taking place in Sydney, Australia, from Nov 4-8, 2024. This was a really great conference, compliments to the organizers, and awesome location.
Ilja Meijer

/ Doctorate/PhD, People

Ilja Meijer joining as a PhD student

With a MSc degree from TU Delft, Netherlands, Ilja Meijer is starting his PhD project in the spin-photon team. He will focus on coherent spin quit coupling over various length scale.
Pierre Henok

PhD Defenses of Pierre Chevalier Kwon and Henok Weldeyesus

Pierre Chevalier Kwon and Henok Weldeyesus successfully defended their PhD theses. Pierre: "Coupling a high impedance resonator to a Ge/Si nanowire" on Sept 30, 2024, with Prof. Pasquale Scarlino (EFPL Lausanne) as referee, Prof. Christian…
Aakash Shandilya

/ Doctorate/PhD, People

Aakash Shandilya joining as a PhD student

With a MSc degree from Indian Institute of Technology Bombay, Aakash Shandilya is starting his PhD project in the spin-qubit team. Welcome to the group, and looking forward to working with you!
Simon Miguel

Phd Defenses of Miguel Carballido and Simon Svab

Miguel Carballido and Simon Svab successfully defended their PhD theses. Miguel: "Fixing the Holes in Holes" on Sept 18, 2024, with Prof. Andrea Morello (UNSW Sydney, Australia) and Prof. Georgios Katsaros (IST Austria, Vienna) as referees,…

Si Quantum Electronics Workshop SiQEW 2024 in Davos, Switzerland

After the 2023 edition in Kyoto, Japan, the Si quantum electronics workshop took place Sept 4-6, 2024, in Davos, Switzerland, supported also by the NCCR SPIN. This meeting is bringing together our growing community of quantum eletronics…
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