Monolayer-based single-photon source in a liquid-helium-free open cavity featuring 65% brightness and quantum coherence

JC Drawer, VN Mitryakhin, H Shan, S Stephan… - Nano Letters, 2023 - ACS Publications
Solid-state single-photon sources are central building blocks in quantum information
processing. Atomically thin crystals have emerged as sources of nonclassical light; however …

Optical driving, spin initialization and readout of single SiV centers in a Fabry-Perot resonator

G Bayer, R Berghaus, S Sachero, AB Filipovski… - Communications …, 2023 - nature.com
Large-scale quantum communication networks require quantum repeaters due to the signal
attenuation in optical fibers. Ideal quantum repeater nodes efficiently link a quantum memory …

Lifetime reduction of single germanium-vacancy centers in diamond via a tunable open microcavity

R Zifkin, CD Rodríguez Rosenblueth, E Janitz… - PRX Quantum, 2024 - APS
Coupling between a single quantum emitter and an optical cavity presents a key capability
for future quantum networking applications. Here, we explore interactions between …

[HTML][HTML] A highly stable and fully tunable open microcavity platform at cryogenic temperatures

M Pallmann, T Eichhorn, J Benedikter, B Casabone… - APL Photonics, 2023 - pubs.aip.org
Open-access microcavities are a powerful tool to enhance light–matter interactions for solid-
state quantum and nanosystems and are key to advance applications in quantum …

Mode mixing and losses in misaligned microcavities

WJ Hughes, TH Doherty, JA Blackmore, P Horak… - Optics …, 2023 - opg.optica.org
We present a study on the optical losses of Fabry-Pérot cavities subject to realistic
transverse mirror misalignment. We consider mirrors of the two most prevalent surface forms …

A Quantum Repeater Platform based on Single SiV Centers in Diamond with Cavity-Assisted, All-Optical Spin Access and Fast Coherent Driving

G Bayer, R Berghaus, S Sachero, AB Filipovski… - arXiv preprint arXiv …, 2022 - arxiv.org
Quantum key distribution enables secure communication based on the principles of
quantum mechanics. The distance in fiber-based quantum communication is limited to about …

Mechanical Mode Imaging of a High-Q Hybrid hBN/Si3N4 Resonator

D Jaeger, F Fogliano, T Ruelle, A Lafranca… - Nano Letters, 2023 - ACS Publications
We image and characterize the mechanical modes of a 2D drum resonator made of hBN
suspended over a high-stress Si3N4 membrane. Our measurements demonstrate …

Python Red Pitaya Lockbox (PyRPL): An open source software package for digital feedback control in quantum optics experiments

L Neuhaus, M Croquette, R Metzdorff, S Chua… - Review of Scientific …, 2024 - pubs.aip.org
We present the Python Red Pitaya Lockbox (PyRPL), an open source software package that
allows the implementation of automatic digital feedback controllers for quantum optics …

Cavity-Enhanced Emission and Absorption of Color Centers in a Diamond Membrane With Selectable Strain

R Berghaus, S Sachero, G Bayer, J Heupel… - arXiv preprint arXiv …, 2024 - arxiv.org
Group IV color centers in diamond are among the most promising optically active spin
systems with strong optical transitions and long spin coherences. The ground-state splitting …

Cavity nano-optomechanics with suspended subwavelength-sized nanowires

A Reigue, F Fogliano, P Heringlake… - Physical Review …, 2023 - APS
In the field of cavity nano-optomechanics, the nanoresonator-in-the-middle approach
consists in inserting a subwavelength-sized deformable resonator, here a nanowire, into the …