Quantum Sensing Lab

Maletinsky Group


Welcome to the quantum sensing lab

Our laboratory is located in the Department of Physics of the University of Basel in Switzerland. Our research is centered around the emerging field of "Quantum sensing", where the use of individual, well-controlled quantum systems as high-performance sensing devices is being explored. We concentrate on implementing various types of such sensors and on applying them to outstanding scientific tasks in mesoscopic physics, nano-science and technology. At the moment, our quantum system of choice for these purposes is the Nitrogen-Vacancy (NV) color center in diamond, whose exceptional quantum-coherent properties allow for high-performance sensing applications (such as single-electron spin detection) even at room temperature.


News from the lab

Daniel's paper published in Physical Review X

Daniels's paper "Deterministic enhancement of coherent photon generation from a nitrogen-vacancy center in ultrapure diamond" was published in PRX. We couple NV centers to a tunable microcavity and significantly enhance their photonic properties: i.e. we demonstrate an increase of the phonon-free emission--which is required for entanglement swapping schemes--from 4% to close to 50%. By making a step-change in the NV's optical properties in a deterministic way, these results pave the way for much enhanced spin-photon and spin-spin entanglement rates.

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Arne Barfuss receives Swiss Nanotechnology Award

Arne Barfuss has won the Swiss Nanotechnology Award sponsored by Rolic Technologies Ltd. for the outstanding publication "Strong mechanical driving of a single electron spin". For the first time, the Swiss MNT Network presents this award to doctoral students at the Swiss research center. Congrats Arne!

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Jean and Arne's paper published

Jean and Arne's paper "Hybrid continuous dynamical decoupling: a photon-phonon doubly dressed spin" studies parametric interaction between a single Nitrogen-Vacancy electronic spin and a diamond mechanical resonator. We present a novel dynamical decoupling scheme, which is based on recently established techniques for dynamical decoupling by concatenated continuous driving. Our work benefits from a robust, drift-free strain-coupling mechanism we have established in the past and from the narrow linewidth of the high-quality diamond mechanical oscillator we employ. We demonstrate prolongation of the relevant spin dephasing times by up to two orders of magnitude, suggesting feasible applications of our decoupling scheme in quantum information processing and sensing.

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Goodbye to Simon

We say goodbye to our Master student Simon Philipp, who will start a PhD with the group of Martino Poggio at the University of Basel. There Simon will work on cantilever magnetometry.

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New PhD Student

Welcome to Natascha Hedrich. Natascha will work on the room temperature NV magnetometry project.

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We won the Nano Image Award

Mara and Dominik won the SNI Nano Image Award with their contribution of a winter landscape made out of diamond.

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We welcome two new PostDocs

James Wood joins us from the Hollenberg group in Melbourne. James will work on NV magnetometry projects. Mark Kasperczyk comes from the Novotny group at ETH Zurich and will reinforce the optomechanics sub-group.

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