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Ongoing projects

Projects

Third-party funded projects in which I act as a principal investigator.

3funding bodies — BMFTR (via PT Jülich and VDI) and DFG

5projects running as principal investigator

2patents filed — an inertial measurement unit and an optomechanical inertial reference

as a principle investigator

INERTIQ

PT Jülich / BMFTR

Quanteninertialsensorik in dynamischer Umgebung basierend auf optomechanischen Resonatoren

Quantum inertial sensing in dynamic environments using optomechanical resonators.

Related publications

A. Rajagopalan et al., Optomechanical inertial reference for atom interferometry arXiv:2608.28418 (2026)
L. L. Richardson et al., Optomechanical resonator-enhanced atom interferometry Commun. Phys. 3, 208 (2020)
F. Guzmán et al., Optomechanical Inertial Reference for Atom Interferometers WO 2020/168314 A1 — filed by the University of Arizona (2020)

Project page

KOAQS-II

PT Jülich / BMFTR

Kompakte Atomquelle für Quantensensoren

Compact atom source for quantum sensors.

AeroQGrav-LUH

VDI / BMFTR

Leuchtturmprojekte der quantenbasierten Messtechnik

Absolute Aero Quantum Gravimetry

Absolute quantum gravimetry from an aircraft, for Earth observation.

B07

DFG

CRC 1227 DQ-mat

Macroscopically delocalised quantum states of matter

Atom interferometry with macroscopic delocalisation in space and time, at the VLBAI facility.

Related publications

A. Herbst et al., High-flux source system for matter-wave interferometry exploiting tunable interactions Phys. Rev. Research 6, 013139 (2024)
A. Herbst et al., Matter-wave collimation to picokelvin energies with scattering length and potential shape control Commun. Phys. 7, 132 (2024)
K. Stolzenberg et al., Multi-axis inertial sensing with 2D matter-wave arrays Phys. Rev. Lett. 134, 143601 (2025)
M. Werner et al., Local Measurement Scheme of Gravitational Curvature using Atom Interferometers Commun. Phys. 8, 463 (2025)

Project page

Project B07 — SFB 1227 DQ-mat

B09

DFG

CRC 1227 DQ-mat

Quantum clock interferometry

Clock interferometry as a probe of gravitational time dilation.

Related publications

A. Roura et al., Measuring gravitational time dilation with delocalized quantum superpositions Phys. Rev. D 104, 084001 (2021)
S. Loriani et al., Interference of Clocks: A Quantum Twin Paradox Sci. Adv. 5, No. 10 (2019)
C. Ufrecht et al., An atom interferometer testing the universality of free fall and gravitational redshift Phys. Rev. Research 2, 043240 (2020)

Project page

Project B09 — SFB 1227 DQ-mat

as participant or external partner

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