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Advanced filters: Author: Łukasz Dusanowski Clear advanced filters

Indistinguishable telecom band photons from a single Er ion in the solid state

Er³⁺ is implanted into CaWO₄, a material with non-polar site symmetry free of background rare earth ions, to realize reduced optical spectral diffusion in nanophotonic devices, representing a step towards making telecom band quantum repeater networks with single ions.

Salim Ourari
Łukasz Dusanowski
Jeff D. Thompson
Research30 Aug 2023
Nature

Volume: 620, P: 977-981
Observation of room temperature excitons in an atomically thin topological insulator

Here, the authors report the observation of room temperature excitons in a single layer of bismuth atoms epitaxially grown on a SiC substrate - a material of non-trivial global topology - with excitonic and topological physics deriving from the very same electronic structure.

Marcin Syperek
Raul Stühler
Christian Schneider
ResearchOpen Access23 Oct 2022
Nature Communications

Volume: 13, P: 1-7
Optical charge injection and coherent control of a quantum-dot spin-qubit emitting at telecom wavelengths

Long-distance quantum communication relies on interfacing qubits with telecom-band photons. Here the authors implement a solid-state spin-qubit based on a hole confined in a semiconductor quantum dot emitting photons in the telecom C-band.

Łukasz Dusanowski
Cornelius Nawrath
Sven Höfling
ResearchOpen Access08 Feb 2022
Nature Communications

Volume: 13, P: 1-8
Optical valley Hall effect for highly valley-coherent exciton-polaritons in an atomically thin semiconductor

The integration of a TMDC monolayer into a high-Q microcavity enables the observation of optical valley Hall effect.

Nils Lundt
Łukasz Dusanowski
Christian Schneider
Research22 Jul 2019
Nature Nanotechnology

Volume: 14, P: 770-775
Relaxation Oscillations and Ultrafast Emission Pulses in a Disordered Expanding Polariton Condensate

Maciej Pieczarka
Marcin Syperek
Grzegorz Sęk
ResearchOpen Access02 Aug 2017
Scientific Reports

Volume: 7, P: 1-8