8 papers · 1 filter
Niobium Titanium Nitride as a High Tensile Stress Material for Nanomechanics
Korbinian Rubenbauer, Burak E. Bülbüloglu, Thomas Luschmann +6
Over the past decades, high-coherence mechanical resonators have been continuously pushed to new limits, using techniques such as dissipation dilution and clamp-tapering to enhance…
Multi-cavity strong coupling to an electron spin ensemble: spectral and dark-state signatures
P. Oehrl, B. Pérez González, A. Dunaev +5
Spin ensembles are considered as potential candidates for quantum memory and quantum enhanced sensing applications. Here, we explore the controlled coupling of multiple superconduc…
On-chip Dicke-type magnon polaritons in the ultrastrong coupling regime via spatially separated nanomagnets
Shugo Yoshii, Manuel Müller, Ryo Ohshima +4
Quantum electrodynamics lies at the heart of hybrid quantum systems essential for future technologies. The thermodynamic limit of the Dicke model, a fundamental model describing th…
Self-Sustained Oscillations of a Nonlinear Optomechanical System in the Low-Excitation Regime
Shivangi Dhiman, K. Rubenbauer, T. Luschmann +3
Manifesting across all time, mass and length scales, nonlinearities lie at the core of numerous physical phenomena. Next-generation quantum applications, such as quantum sensing, r…
Practical quantum tokens: challenges and perspectives
Nadezhda P. Kukharchyk, Holger Boche, Christian Deppe +21
The concept of quantum tokens dates back alongside quantum cryptography to Stephen Wiesner's seminal work in 1983[1]. Already this initial work proposes society-relevant applicatio…
Probing an electron spin ensemble with squeezed microwave signals
P. Oehrl, F. Fesquet, K. E. Honasoge +5
The efficient transfer of quantum states into a long-lived storage unit such as solid-state spin ensembles is widely recognized as a critical challenge with significant implication…