81 citations · 365 across the 19 of their papers we have counts for
19 papers
Steady-state dynamics of quantum frequency combs in microring resonators
Patrick Tritschler, Torsten Ohms, André Zimmermann +1
Optical frequency combs are utilized in a wide range of optical applications, including atomic clocks, interferometers, and various sensing technologies. They are often generated v…
Chip-integrated single-mode coherent-squeezed light source using four-wave mixing in microresonators
Patrick Tritschler, Torsten Ohms, Christian Schweikert +7
Squeezed light constitutes a key resource for quantum optical technologies including quantum sensing, computing, communication and metrology. For many applications the generation o…
Nonlinear optical bistability in microring resonators for enhanced phase sensing
Patrick Tritschler, Christian Schweikert, Rouven H. Klenk +7
Photonic microring resonators are used in a variety of chip-integrated sensing applications where they allow one to measure transmission intensity changes upon external signals wit…
Shape Optimization of Geometrically Nonlinear Modal Coupling Coefficients: An Application to MEMS Gyroscopes
Daniel Schiwietz, Marian Hörsting, Eva Maria Weig +2
Micro- and nanoelectromechanical system (MEMS and NEMS) resonators can exhibit rich nonlinear dynamics as they are often operated at large amplitudes with high quality factors and…
Shape Optimization of Eigenfrequencies in MEMS Gyroscopes
Daniel Schiwietz, Marian Hörsting, Eva Maria Weig +2
Microelectromechanical systems (MEMS) gyroscopes are widely used in consumer and automotive applications. They have to fulfill a vast number of product requirements which lead to c…
Optical interferometer using two-mode squeezed light for enhanced chip-integrated quantum metrology
Patrick Tritschler, Torsten Ohms, André Zimmermann +3
This work discusses the possibility of using two-mode squeezed light to improve the performance of existing sensor technology with the focus on its miniaturization under realistic…
Thermoelastic Damping in MEMS Gyroscopes at High Frequencies
Daniel Schiwietz, Eva M. Weig, Peter Degenfeld-Schonburg
Microelectromechanical systems (MEMS) gyroscopes are widely used, e.g. in modern automotive and consumer applications, and require signal stability and accuracy in rather harsh env…
Parametric Amplification of Broadband Vibrational Energy Harvesters for Energy-Autonomous Sensors Enabled by Field-Induced Striction
Ulrike Nabholz, Lukas Lamprecht, Jan E. Mehner +2
We investigate the influence of parametric excitation on MEMS vibration energy harvesters for energy autonomous sensor systems. In Industry 4.0 (or Industrial IoT) applications, in…
Nonlinear Dynamical System Model for Drive Mode Amplitude Instabilities in MEMS Gyroscopes
Ulrike Nabholz, Michael Curcic, Jan E. Mehner +1
The requirements pertaining to the reliability and accuracy of micro-electromechanical gyroscopic sensors are increasing,as systems for vehicle localization emerge as an enabling f…
Spontaneous parametric down-conversion induced by optomechanical gradient forces in nanophotonic waveguides
Mohamed Ashour, Jan Niklas Caspers, Eva M. Weig +1
Optomechanical gradient forces arise from evanescent fields of guided waves in parallel photonic waveguides. When designed to be of attractive nature, they increase exponentially a…
Validating the Critical Point of Spontaneous Parametric Down-Conversion for over 600 Scanning MEMS Micro Mirrors on Wafer-Level
Ulrike Nabholz, Florian Stockmar, Jan E. Mehner +1
Sensors and actuators based on resonant micro-electro-mechanical systems (MEMS), such as scanning micro mirrors, are well-established in automotive and consumer products. As the ar…
Spontaneous parametric down-conversion induced by non-degenerate three-wave mixing in a scanning MEMS micro mirror
Ulrike Nabholz, Frank Schatz, Jan E. Mehner +1
Scanning micro-mirror actuators are silicon-based oscillatory micro-electro-mechanical systems (MEMS). They enable laser distance measurements for automotive LIDAR applications as…
Amplitude- and gas pressure-dependent nonlinear damping of high-Q oscillatory MEMS micro mirrors
Ulrike Nabholz, Wolfgang Heinzelmann, Jan E. Mehner +1
Silicon-based micro-electromechanical systems (MEMS) can be fabricated using bulk and surface micromachining technology. A micro mirror designed as an oscillatory MEMS constitutes…
Dissipative optomechanical preparation of macroscopic quantum superposition states
M. Abdi, P. Degenfeld-Schonburg, M. Sameti +2
The transition from quantum to classical physics remains an intensely debated question even though it has been investigated for more than a century. Further clarifications could be…
Degenerate optomechanical parametric oscillators: cooling in the vicinity of a critical point
Peter Degenfeld-Schonburg, Mehdi Abdi, Michael J. Hartmann +1
Degenerate optomechanical parametric oscillators are optical resonators in which a mechanical degree of freedom is coupled to a cavity mode that is nonlinearly amplified via parame…
Self-Consistent Projection Operator Theory in Nonlinear Quantum Optical Systems: A case study on Degenerate Optical Parametric Oscillators
Peter Degenfeld-Schonburg, Carlos Navarrete-Benlloch, Michael J. Hartmann
Nonlinear quantum optical systems are of paramount relevance for modern quantum technologies, as well as for the study of dissipative phase transitions. Their nonlinear nature make…
Classical and quantum-linearized descriptions of degenerate optomechanical parametric oscillators
Sebastian Pina-Otey, Fernando Jiménez, Peter Degenfeld-Schonburg +1
Recent advances in the development of modern quantum technologies have opened the possibility of studying the interplay between spontaneous parametric down-conversion and optomecha…
Self-Consistent Projection Operator Theory for Quantum Many-Body Systems
Peter Degenfeld-Schonburg, Michael J. Hartmann
We derive an exact equation of motion for the reduced density matrices of individual subsystems of quantum many-body systems of any lattice dimension and arbitrary system size. Our…
Signatures of single site addressability in resonance fluorescence spectra
Peter Degenfeld-Schonburg, Elena del Valle, Michael J. Hartmann
Pioneering methods in recent optical lattice experiments allow to focus laser beams down to a spot size that is comparable to the lattice constant. Inspired by this achievement, we…