85 citations · 1.1k across the 51 of their papers we have counts for
53 papers
Sub 35-ps Single-Photon Stellar Intensity Interferometry of Vega
Verena G. Leopold, Sebastian Karl, Stefan Richter +7
SII enables measurements of stellar photospheres by correlating intensity fluctuations, offering a robust alternative to amplitude-based techniques. With the advent of modern singl…
Stellar physics at sub-nanoradian angular resolution
P. Batista, J. Biteau, C. Carlile +36
Many stars -- if they could be imaged with enough angular resolution -- would exhibit features expected from theory but not possible to extract from spectra. We may group these by…
Real-time measurement error mitigation for one-way quantum computation
Tobias Hartung, Stephan Schuster, Joachim von Zanthier +1
We propose a quantum error mitigation scheme for single-qubit measurement errors, particularly suited for one-way quantum computation. Contrary to well established error mitigation…
Multi-Path and Multi-Particle Tests of Complex vs. Hyper-Complex Quantum Theory
Ece İpek Saruhan, Joachim von Zanthier, Marc-Oliver Pleinert
The axioms of quantum mechanics provide limited information regarding the structure of the Hilbert space, such as the underlying number system. The latter is generally regarded as…
TEMPUS, a Timepix4-based system for event-based X-rays detection
Jonathan Correa, Alexandr Ignatenko, David Pennicard +16
A readout system based on the Timepix4 ASIC, is being developed for photon science. The TEMPUS detector can be operated in two distinct modes: a photon counting mode, which allows…
Spin-selective coherent light scattering from ion crystals
Maurizio Verde, Ansgar Schaefer, Benjamin Zenz +5
We study coherent light scattering from linear crystals with up to twelve ions, acting as single photon emitters. Light-scattering is induced by two-photon laser…
Hanbury Brown and Twiss interference of electrons in free space from independent needle tip sources
Anton Classen, Raul Corrêa, Florian Fleischmann +4
We investigate two-electron interference in free space using two laser-triggered needle tips as independent electron sources, a fermionic realisation of the landmark Hanbury Brown…
Phase Retrieval in Incoherent Diffractive Imaging using higher-order photon correlation functions
M. Bojer, J. Eckert, S. Karl +2
To obtain spatial information about an arbitrary object in x-ray structure analysis, the standard method is to measure the intensity in the far field, i.e., the first-order photon…
Studying the phase diagram of the three-flavor Schwinger model in the presence of a chemical potential with measurement- and gate-based quantum computing
Stephan Schuster, Stefan Kühn, Lena Funcke +4
We propose an ansatz quantum circuit for the variational quantum eigensolver (VQE), suitable for exploring the phase structure of the multi-flavor Schwinger model in the presence o…
Photon counting intensity interferometry in the blue at a 0.5 m telescope
Sebastian Karl, Stefan Richter, Joachim von Zanthier
Intensity interferometry is a re-emerging interferometry tool that alleviates some of the challenges of amplitude interferometry at the cost of reduced sensitivity. We demonstrate…
Superradiance of non-interacting atoms
M. Bojer, J. von Zanthier
Fully-excited two-level atoms separated by less than the transition wavelength cooperatively emit light in a short burst, a phenomenon called superradiance by R. Dicke in 1954. The…
Engineering of spontaneous emission in free space via conditional measurements
Manuel Bojer, Lukas Götzendörfer, Romain Bachelard +1
We study the collective spontaneous emission of three identical two-level atoms initially prepared in the excited states by measuring Glauber's third-order photon correlation funct…
Comparing Different Approaches for Stellar Intensity Interferometry
Sebastian Karl, Andreas Zmija, Stefan Richter +7
Stellar intensity interferometers correlate photons within their coherence time and could overcome the baseline limitations of existing amplitude interferometers. Intensity interfe…
A quantitative comparison of amplitude versus intensity interferometry for astronomy
Manuel Bojer, Zixin Huang, Sebastian Karl +3
Astronomical imaging can be broadly classified into two types. The first type is amplitude interferometry, which includes conventional optical telescopes and Very Large Baseline In…
Different Types of Coherence: Young-type Interference versus Dicke Superradiance
D. Bhatti, M. Bojer, J. von Zanthier
Dicke superradiance, i.e., the enhanced spontaneous emission of coherent radiation, is often attributed to radiation emitted by synchronized dipoles coherently oscillating in phase…
Imaging trapped ion structures via fluorescence cross-correlation detection
Stefan Richter, Sebastian Wolf, Joachim von Zanthier +1
Cross-correlation signals are recorded from fluorescence photons scattered in free space off a trapped ion structure. The analysis of the signal allows for unambiguously revealing…
Testing higher-order quantum interference with many-particle states
Marc-Oliver Pleinert, Alfredo Rueda, Eric Lutz +1
Quantum theory permits interference between indistinguishable paths but, at the same time, restricts its order. Single-particle interference, for instance, is limited to the second…
Light from an ion crystal: bunching or antibunching?
Sebastian Wolf, Stefan Richter, Joachim von Zanthier +1
Photon statistics divides light sources into three different categories, characterized by bunched, antibunched or uncorrelated photon arrival times. Single atoms, ions, molecules,…
Ghost Imaging at an XUV Free-Electron Laser
Young Yong Kim, Luca Gelisio, Giuseppe Mercurio +18
Radiation damage is one of the most severe resolution limiting factors in x-ray imaging, especially relevant to biological samples. One way of circumventing this problem is to expl…
Many-particle interference to test Born's rule
Marc-Oliver Pleinert, Joachim von Zanthier, Eric Lutz
Born's rule, one of the cornerstones of quantum mechanics, relates detection probabilities to the modulus square of the wave function. Single-particle interference is accordingly l…
Generation of N00N-like interferences with two thermal light sources
Daniel Bhatti, Anton Classen, Raimund Schneider +2
Measuring the th-order intensity correlation function of light emitted by two statistically independent thermal light sources may display N00N-like interferences of arbitrary or…
Analysis of superresolution via 3D structured illumination intensity correlation microscopy
Anton Classen, Joachim von Zanthier, Girish S. Agarwal
Intensity correlation microscopy (ICM), which is prominently known through antibunching microscopy or super-resolution optical fluctuation imaging (SOFI), provides superresolution…
Prime Number Decomposition using the Talbot Effect
Karl Pelka, Jasmin Graf, Thomas Mehringer +1
We report on prime number decomposition by use of the Talbot effect, a well-known phenomenon in classical near field optics whose description is closely related to Gauss sums. The…
Directional Dicke Subradiance with Nonclassical and Classical Light Sources
Daniel Bhatti, Raimund Schneider, Steffen Oppel +1
We investigate Dicke subradiance of distant quantum sources in free space, i.e., the spatial emission pattern of spontaneously radiating non-interacting multi-level atoms or multi-…