248 citations · 1.2k across the 23 of their papers we have counts for
23 papers
Nonlinear and Quantum Optics with Whispering Gallery Resonators Revisited
Dmitry V. Strekalov, Nicholas J. Lambert, Christoph Marquardt +5
In 2016 we published a review paper "Nonlinear and Quantum Optics with Whispering Gallery Resonators" (1). While writing this review, we found it often necessary to defer addressin…
Spatial mapping and tuning of terahertz modes in a silicon whispering gallery mode resonator
Anna R. Petersen, Pablo Paulsen, Florian Sedlmeir +3
Identification and subsequent manipulation of resonant modes typically relies on comparison with calculations which require precise knowledge of material parameters and dimensions.…
Cascaded Raman lasing in a lithium tetraborate (LB4) whispering gallery mode resonator
Chengcai Tian, Florian Sedlmeir, Jervee Punzalan +5
Lithium tetraborate (LB4) is a lithium borate compound and recently has shown renewed interest due to its exceptional linear and nonlinear optical properties. Its wide transparency…
Eavesdropper localization for quantum and classical channels via nonlinear scattering
Alexandra Popp, Florian Sedlmeir, Birgit Stiller +1
Optical fiber networks are part of important critical infrastructure and known to be prone to eavesdropping attacks. Hence cryptographic methods have to be used to protect communic…
Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime
Golnoush Shafiee, Dmitry V. Strekalov, Alexander Otterpohl +6
Photon pairs and heralded single photons, obtained from cavity-assisted parametric down-conversion (PDC), play an important role in quantum communications and technology. This moti…
Quantum-limited measurements of intensity noise levels in Yb-doped fiber amplifiers
Alexandra Popp, Victor Distler, Kevin Jaksch +7
We investigate the frequency-resolved intensity noise spectrum of an Yb-doped fiber amplifier down to the fundamental limit of quantum noise. We focus on the kHz and low MHz freque…
Coherent conversion between microwave and optical photons -- an overview of physical implementations
Nicholas J. Lambert, Alfredo Rueda, Florian Sedlmeir +1
Quantum information technology based on solid state qubits has created much interest in converting quantum states from the microwave to the optical domain. Optical photons, unlike…
Squeezed vacuum states from a whispering gallery mode resonator
Alexander Otterpohl, Florian Sedlmeir, Ulrich Vogl +9
Squeezed vacuum states enable optical measurements below the quantum limit and hence are a valuable resource for applications in quantum metrology and also quantum communication. H…
The Standard Quantum Limit of Coherent Beam Combining
C. R. Muller, F. Sedlmeir, V. O. Martynov +2
Coherent beam combining refers to the process of generating a bright output beam by merging independent input beams with locked relative phases. We report the first quantum mechani…
Resonant Electro-Optic Frequency Comb
Alfredo Rueda, Florian Sedlmeir, Madhuri Kumari +2
High speed optical telecommunication is enabled by wavelength division multiplexing, whereby hundreds of individually stabilized lasers encode the information within a single mode…
More efficient second harmonic generation of whispering gallery modes by selective out-coupling
Luke S. Trainor, Florian Sedlmeir, Christian Peuntinger +1
We demonstrate second harmonic generation (SHG) in an -cut congruent lithium niobate (LN) whispering gallery mode resonator. We first show theoretically that independent control…
Polarization-selective out-coupling of whispering gallery modes
Florian Sedlmeir, Matthew R. Foreman, Ulrich Vogl +6
Whispering gallery mode (WGM) resonators are an important building block for linear, nonlinear and quantum optical experiments. In such experiments, independent control of coupling…
Dielectric tuning and coupling of whispering gallery modes using an anisotropic prism
Matthew R. Foreman, Florian Sedlmeir, Harald G. L. Schwefel +1
Optical whispering gallery mode (WGM) resonators are a powerful and versatile tool used in many branches of science. Fine tuning of the central frequency and line width of individu…
Efficient single sideband microwave to optical conversion using an electro-optical whispering gallery mode resonator
Alfredo Rueda, Florian Sedlmeir, Michele C. Collodo +9
Linking classical microwave electrical circuits to the optical telecommunication band is at the core of modern communication. Future quantum information networks will require coher…
Frequency tuning of a triply-resonant whispering-gallery mode resonator to MHz wide transitions for proposed quantum repeater schemes
Gerhard Schunk, Ulrich Vogl, Florian Sedlmeir +6
Quantum repeaters rely on an interfacing of flying qubits with quantum memories. The most common implementations include a narrowband single photon matched in bandwidth and central…
Interfacing transitions of different alkali atoms and telecom bands using one narrowband photon pair source
Gerhard Schunk, Ulrich Vogl, Dmitry V. Strekalov +7
Quantum information technology strongly relies on coupling of optical photons with narrowband quantum systems, such as quantum dots, color centers, and atomic systems. This couplin…
Near-infrared single-photon spectroscopy of a whispering gallery mode resonator using energy-resolving transition edge sensors
Michael Förtsch, Thomas Gerrits, Martin J. Stevens +9
We demonstrate a method to perform spectroscopy of near-infrared single photons without the need of dispersive elements. This method is based on a photon energy resolving transitio…
High-Q MgF whispering gallery mode resonators for refractometric sensing in aqueous environment
Florian Sedlmeir, Richard Zeltner, Gerd Leuchs +1
We present our experiments on refractometric sensing with ultrahigh-Q, crystalline, birefringent magnesium fluoride (MgF) whispering gallery mode resonators. The difference to…
Identifying modes of large whispering-gallery mode resonators from the spectrum and emission pattern
Gerhard Schunk, Josef U. Fürst, Michael Förtsch +6
Identifying the mode numbers in whispering-gallery mode resonators (WGMRs) is important for tailoring them to experimental needs. Here we report on a novel experimental mode analys…
Highly efficient generation of single-mode photon pairs using a crystalline whispering gallery mode resonator
Michael Förtsch, Gerhard Schunk, Josef U. Fürst +8
We report a highly efficient source of narrow-band photon pairs based on parametric down-conversion in a crystalline whispering gallery mode resonator. Remarkably, each photon of a…
Experimental characterization of an uniaxial angle cut whispering gallery mode resonator
Florian Sedlmeir, Martin Hauer, Josef U. Fürst +2
The usual configuration of uniaxial whispering gallery mode resonators is a disk shaped geometry where the optic axis points along the symmetry axis, a so called z-cut resonator. R…
Directional Emission of Dielectric Disks with a Finite Scatterer in the THz Regime
Sascha Preu, Sandra I. Schmid, Florian Sedlmeir +2
In the Terahertz (THz) domain, we investigate both numerically and experimentally the directional emission of whispering gallery mode resonators that are perturbed by a small scatt…
Sub-kHz lasing of a CaF_2 Whispering Gallery Mode Resonator Stabilized Fiber Ring Laser
M. C. Collodo, F. Sedlmeir, B. Sprenger +3
We utilize a high quality calcium fluoride whispering-gallery-mode resonator to stabilize a simple erbium doped fiber ring laser with an emission frequency of 196 THz (wavelenght 1…