activity
20072026
most citedDesign of a mode converter for efficient light-atom coupling in free space

114 citations · 351 across the 23 of their papers we have counts for

collaborators

24 papers

quant-ph2026

Contacting Josephson Junctions via Airbridges in Superconducting Circuits

Prakiran Baidya, Momčilo Milosavljević, Murali Krishna Kurmapu +6

Superconducting circuit devices require electrical interconnects between different circuit elements on the chip, for which conventional device architectures use a combination of tw…

quant-ph2026★ 1 cited

Experimental Demonstration of Commutation Relations Using Intensity Correlations

Hans Dang, Sebastian Luff, Martin Fischer +4

The canonical commutation relation is a cornerstone of quantum theory and underlies the Heisenberg uncertainty principle. Although uncertainty relations have been extensively teste…

quant-ph2025

Feedback Cooling and Thermometry of a Single Trapped Ion Using a Knife Edge

Hans Dang, Sebastian Luff, Martin Fischer +2

We report on a simple and easy to implement method of feedback cooling trapped ions to temperatures below those achievable using only Doppler cooling. Additionally, the feedback co…

physics.optics2025★ 4 cited

Polarization dynamics in vertical-cavity surface emitting lasers

Thorsten Ackemann, Markus Sondermann

Experiments and their interpretation on polarization dynamics and polarization switching in vertical-cavity surface-emitting lasers operated in the fundamental transverse mode regi…

quant-ph2019★ 9 cited

Measuring the temperature and heating rate of a single ion by imaging

Bharath Srivathsan, Martin Fischer, Lucas Alber +3

We present a technique based on high resolution imaging to measure the absolute temperature and the heating rate of a single ion trapped at the focus of a deep parabolic mirror. We…

physics.optics2019

Focusing light with a deep parabolic mirror

Norbert Lindlein, Markus Sondermann, Robert Maiwald +3

The smallest possible focus is achieved when the focused wave front is the time reversed copy of the light wave packet emitted from a point in space (S. Quabis et al., Opt. Commun.…