University of Basel

Department
of Physics

Quantum Coherence Lab - Zumbühl Group

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MetaLearning

On arXiv: Meta-learning characteristics and dynamics of quantum systems

Machine learning holds great promise for quantum technologies, with most current methods focusing on predicting or controlling a specific quantum system. Meta-learning approaches, however, can adapt to new systems for which little data is…
APS2025

APS Global Summit 2025, Anaheim

Mon A19 Germanium Hole-Spin Qubits, 8:00 am, 163 (Level 1) A19 10:36 am All-electrical operation of a spin qubit coupled to a high-Q resonator, Rafael Eggli Tue J19 Cryogenic Control of Spin Qubits, 3:00 pm, 163 (Level1) J19 3:00 pm…
5LG in B-field

On arXiv: Signatures of Chiral Superconductivity in Rhombohedral Graphene

Chiral superconductors are unconventional superconducting states that break time reversal symmetry spontaneously and typically feature Cooper pairing at non-zero angular momentum. Such states may host Majorana fermions and provide an…
Karthi

Karthekan Sivasubramaniam joining as a Master Student

With a Bachelor degree from the University of Basel, Karthekan is starting as a master student in our group! He will work on quantum parametric amplifiers.
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…
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