XSTM_1to4
Slider_device
trumpets_1to4
strongcoupling_WEBSITESPINNER
QuantumDot_TEM_1to4
singlephotonsource_WEBSITESPINNER
VanDerWaalsStack_2DMaterials_v2

Latest News

Nam and Nadia win QCQT Excellence Awards 2023!

Nam Nguyen and Nadia Antoniadis both receive the QCQT Excellence Award 2023. Nam got it in recognition of his outstanding work in the publications “Enhanced Electron-Spin Coherence in a GaAs Quantum Emitter” published in PRL and  “Quantum interference of identical photons from remote GaAs quantum dots” published in Nat. Nanotechnol. Nadia got the price for her outstanding work in “Cavity-enhanced single-shot readout of a quantum dot spin within 3 nanoseconds” published in Nat. Commun. and “A chiral one-dimensional atom using a quantum dot in an open microcavity” published in npj Quantum Inf. Congratulations!!

Nam and Nadia win QCQT Excellence Awards 2023!

Spectrally stable nitrogen-vacancy centers in diamond formed by carbon implantation into thin microstructures

In our most recent manuscript, published in Applied Physics Letter, we present an improved method for the creation of narrow-linewidth nitrogen-vacancy centers (NVs) in microstructured diamond. NVs are known for their exceptional spin coherence and convenience in optical spin initialization and readout, and are increasingly used both as a quantum sensor and as a building block for quantum networks. The standard method relying on nitrogen implantation to create NVs tends to create NV populations with broadened optical linewidth. The phenomenon is much aggravated when photonic structures allowing a better photon collection efficiency are created around the emitters. We demonstrate that implantation of carbon ions yields a comparable density of NVs as implantation of nitrogen ions, and that implantation after instead of before the diamond fabrication process results in NV populations with narrow optical linewidths and low charge-noise levels even in thin diamond microstructures. We measure a median NV linewidth of 150 MHz for structures thinner than 5 μm, with no trend of increasing linewidths down to the thinnest measured structure of 1.9 μm and confirm our results in multiple samples implanted with different ion energies and fluences.

Spectrally stable nitrogen-vacancy centers in diamond formed by carbon implantation into thin microstructures

Natasha Tomm receives the Prix Schläfli 2022 and the Faculty Prize of the University of Basel!

Natasha Tomm has received two awards for her PhD thesis “A quantum dot in a microcavity as a bright source of coherent single photons” this year!

The first prize was the Prix Schläfli in Physics 2022, awarded by the Swiss Academy of Sciences (SCNAT). The Prix Schläfli is one of the oldest prizes in Switzerland and awards every year the best dissertations in natural sciences. Read more here.

The second one was given by the Philosophisch-Naturwissenschaftliche Fakultät of the University of Basel. Every year the Faculty awards two outstanding dissertations that have demonstrated great importance and quality of the scientific contributions.

Congratulations!!!

Prix Schläfli 2022: Natasha Tomm

Natasha Tomm receives the Prix Schläfli 2022 and the Faculty Prize of the University of Basel!
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