81 citations · 365 across the 19 of their papers we have counts for
9 papers · 1 filter
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…
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…
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…