385 citations · 2.8k across the 44 of their papers we have counts for
45 papers
Tutorial on laser locking techniques and the manufacturing of vapor cells for spectroscopy
Max Mäusezahl, Fabian Munkes, Robert Löw
This tutorial provides a hands-on entry point about laser locking for atomic vapor research and related research such as laser cooling. We furthermore introduce common materials an…
Manipulating the Dipolar Interactions and Cooperative Effects in Confined Geometries
Hadiseh Alaeian, Artur Skljarow, Stefan Scheel +2
To facilitate the transition of quantum effects from the controlled laboratory environment to practical real-world applications, there is a pressing need for scalable platforms. On…
Collisional shift and broadening of Rydberg states in nitric oxide at room temperature
Fabian Munkes, Alexander Trachtmann, Patrick Kaspar +9
We report on the collisional shift and line broadening of Rydberg states in nitric oxide (NO) with increasing density of a background gas at room temperature. As a background gas w…
Analyzing the collective emission of a Rydberg-blockaded single-photon source based on an ensemble of thermal atoms
Jan A. P. Reuter, Max Mäusezahl, Felix Moumtsilis +4
An ensemble of Rubidum atoms can be excited with lasers such that it evolves into an entangled state with just one collective excitation within the Rydberg blockade radius. The dec…
Observation of vibrational dynamics of orientated Rydberg-atom-ion molecules
Yi-Quan Zou, Moritz Berngruber, Viraatt S. V. Anasuri +4
Vibrational dynamics in conventional molecules usually takes place on a timescale of picoseconds or shorter. A striking exception are ultralong-range Rydberg molecules, for which d…
Zeeman optical pumping of Rb atoms in a hollow core photonic crystal fibre
Tomasz Krehlik, Artur Stabrawa, Rafał Gartman +3
Preparation of an atomic ensemble in a particular Zeeman state is a critical step of many protocols for implementing quantum sensors and quantum memories. These devices can also be…
Spatially resolved spectroscopy of alkali metal vapour diffusing inside hollow-core photonic crystal fibres
Daniel R Häupl, Daniel Weller, Robert Löw +1
We present a new type of compact and all-glass based vapour cell integrating hollow-core photonic crystal fibres. The absence of metals, as in a traditional vacuum chamber and the…
Spatial imaging of a novel type of molecular ions
N. Zuber, V. S. V. Anasuri, M. Berngruber +4
Atoms with a highly excited electron, called Rydberg atoms, can form unusual types of molecular bonds. The bond differs from the well known ionic and covalent bonds not only by its…
Transient Density-Induced Dipolar Interactions in a Thin Vapor Cell
Florian Christaller, Max Mäusezahl, Felix Moumtsilis +6
We exploit the effect of light-induced atomic desorption to produce high atomic densities () in a rubidium vapor cell. An intense off-resonant laser is pulsed for roughly…
Proof of concept for an optogalvanic gas sensor for NO based on Rydberg excitations
Johannes Schmidt, Markus Fiedler, Ralf Albrecht +9
We demonstrate the applicability of 2-photon Rydberg excitations of nitric oxide (NO) at room temperature in a gas mixture with helium (He) as an optogalvanic gas sensor. The charg…
Rydberg molecules for ion-atom scattering in the ultracold regime
T. Schmid, C. Veit, N. Zuber +4
We propose a novel experimental method to extend the investigation of ion-atom collisions from the so far studied cold, essentially classical regime to the ultracold, quantum regim…
Fiber-integrated spectroscopy device for hot alkali vapor
Josephine Gutekunst, Daniel Weller, Harald Kübler +4
We introduce an all-glass, vacuum tight, fiber-integrated and alkali compatible spectroscopy device consisting of two conventional optical fibers spliced to each end of a capillary…
Photo-association of trilobite Rydberg molecules via resonant spin-orbit coupling
Kathrin S. Kleinbach, Florian Meinert, Felix Engel +4
We report on a novel method for photo-association of strongly polar trilobite Rydberg molecules. This exotic ultralong-range dimer, consisting of a ground-state atom bound to the R…
Condensate losses and oscillations induced by Rydberg atoms
Tomasz Karpiuk, Mirosław Brewczyk, Kazimierz Rzążewski +5
We numerically analyze the impact of a single Rydberg electron onto a Bose-Einstein condensate. Both and Rydberg states are studied. The radial size of and state…
Charge-induced optical bistability in thermal Rydberg vapor
Daniel Weller, Alban Urvoy, Andy Rico +2
We investigate the phenomenon of optical bistability in a driven ensemble of Rydberg atoms. By performing two experiments with thermal vapors of rubidium and cesium, we are able to…
Controlling Rydberg atom excitations in dense background gases
Tara Cubel Liebisch, Michael Schlagmüller, Felix Engel +13
We discuss the density shift and broadening of Rydberg spectra measured in cold, dense atom clouds in the context of Rydberg atom spectroscopy done at room temperature, dating back…
Coupling a thermal atomic vapor to an integrated ring resonator
Ralf Ritter, Nico Gruhler, Wolfram Pernice +3
Strongly interacting atom-cavity systems within a network with many nodes constitute a possible realization for a quantum internet which allows for quantum communication and comput…
Ultracold chemical reactions of a single Rydberg atom in a dense gas
Michael Schlagmüller, Tara Cubel Liebisch, Felix Engel +10
Within a dense environment (atoms/cm) at ultracold temperatures (), a single atom excited to a Rydberg state acts as a reaction center for…
Pulsed Rydberg four-wave mixing with motion-induced dephasing in a thermal vapor
Yi-Hsin Chen, Fabian Ripka, Robert Löw +1
We report on time-resolved pulsed four-wave mixing (FWM) signals in a thermal Rubidium vapor involving a Rydberg state. We observe FWM signals with dephasing times up to 7 ns, stro…
Probing a scattering resonance in Rydberg molecules with a Bose-Einstein condensate
Michael Schlagmüller, Tara Cubel Liebisch, Huan Nguyen +10
We present spectroscopy of a single Rydberg atom excited within a Bose-Einstein condensate. We not only observe the density shift as discovered by Amaldi and Segre in 1934, but a l…
Strongly correlated growth of Rydberg aggregates in a vapor cell
A. Urvoy, F. Ripka, I. Lesanovsky +4
The observation of strongly interacting many-body phenomena in atomic gases typically requires ultracold samples. Here we show that the strong interaction potentials between Rydber…
Triple stack glass-to-glass anodic bonding for optogalvanic spectroscopy cells with electrical feedthroughs
Renate Daschner, Harald Kübler, Robert Löw +3
We demonstrate the use of an anodic bonding technique for building a vacuum tight vapor cell for the use of Rydberg spectroscopy of alkali atoms with thin film electrodes on the in…
Spectroscopy of the D1-transition of cesium by dressed-state resonance fluorescence from a single (In,Ga)As/GaAs quantum dot
S. M. Ulrich, S. Weiler, M. Oster +4
We use a laser-driven single (In,Ga)As quantum dot (QD) in the dressed state regime of resonance fluorescence ( K) to observe the four -transition lines of alkali atomi…
Rydberg atoms in hollow-core photonic crystal fibres
G. Epple, K. S. Kleinbach, T. G. Euser +4
The exceptionally large polarisability of highly excited Rydberg atoms (six orders of magnitude higher than ground-state atoms) makes them of great interest in fields such as quant…