14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Max Planck SocietyDE1.5k papers
- Leibniz University HannoverDE902 papers
- California Institute of TechnologyUS583 papers
- Centre National de la Recherche ScientifiqueFR534 papers
- University of BirminghamGB417 papers
- Pennsylvania State UniversityUS402 papers
- University of Maryland, College ParkUS398 papers
- Louisiana State UniversityUS394 papers
- University of Wisconsin–MilwaukeeUS390 papers
- Cardiff UniversityGB371 papers
- University of GlasgowGB367 papers
- Goddard Space Flight CenterUS340 papers
15 papers · 2 filters
Strong Einstein-Podolsky-Rosen steering with unconditional entangled states
Sebastian Steinlechner, Jöran Bauchrowitz, Tobias Eberle +1
In 1935 Schrödinger introduced the terms entanglement and steering in the context of the famous gedanken experiment discussed by Einstein, Podolsky, and Rosen (EPR). Here, we repor…
Status of the GEO 600 squeezed-light laser
Alexander Khalaidovski, Henning Vahlbruch, Nico Lastzka +5
In the course of the high-frequency upgrade of GEO 600, its optical configuration was extended by a squeezed-light laser [1]. Recently, a non-classically enhanced measurement sensi…
Squeezed light at 1550 nm with a quantum noise reduction of 12.3 dB
Moritz Mehmet, Stefan Ast, Tobias Eberle +3
Continuous-wave squeezed states of light at the wavelength of 1550 nm have recently been demonstrated, but so far the obtained factors of noise suppression still lag behind today's…
Gaussian Entanglement for Quantum Key Distribution from a Single-Mode Squeezing Source
Tobias Eberle, Vitus Händchen, Jörg Duhme +4
We report the suitability of an Einstein-Podolsky-Rosen (EPR) entanglement source for gaussian continuous-variable quantum key distribution at 1550 nm. Our source is based on a sin…
The critical Kerr non-linear optical cavity in the presence of internal loss and driving noise
Andre Thuering, Roman Schnabel
We theoretically analyze the noise transformation of a high power continuouswave light field that is reflected off a critical Kerr non-linear cavity (KNLC). Our investigations are…
Long-term stable squeezed vacuum state of light for gravitational wave detectors
Alexander Khalaidovski, Henning Vahlbruch, Nico Lastzka +4
Currently, the German/British gravitational wave detector GEO600 is being upgraded in course of the GEO-HF program. One part of this upgrade consists of the integration of a squeez…
A gravitational wave observatory operating beyond the quantum shot-noise limit: Squeezed light in application
The LIGO Scientific Collaboration
Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein's General Theory of Relativity [Ei…
Quantum entanglement and teleportation in pulsed cavity-optomechanics
Sebastian G. Hofer, Witlef Wieczorek, Markus Aspelmeyer +1
Entangling a mechanical oscillator with an optical mode is an enticing and yet a very challenging goal in cavity optomechanics. Here we consider a pulsed scheme to create Einstein-…
Path integral approach to the full Dicke model with dipole-dipole interaction
M. Aparicio Alcalde, J. Stephany, N. F. Svaiter
We consider the full Dicke spin-boson model composed by a single bosonic mode and an ensemble of identical two-level atoms with different couplings for the resonant and anti-re…
Quantum Brownian motion of multipartite systems and their entanglement dynamics
C. H. Fleming, Albert Roura, B. L. Hu
We solve the model of N quantum Brownian oscillators linearly coupled to an environment of quantum oscillators at finite temperature, with no extra assumptions about the structure…
High-efficiency frequency doubling of continuous-wave laser light
Stefan Ast, Ramon Moghadas Nia, Axel Schönbeck +6
We report on the observation of high efficiency frequency doubling of 1550 nm continuous-wave laser light in a nonlinear cavity containing a periodically poled potassium titanyl ph…
Direct Sampling of Negative Quasiprobabilities of a Squeezed State
T. Kiesel, W. Vogel, B. Hage +1
Although squeezed states are nonclassical states, so far, their nonclassicality could not be demonstrated by negative quasiprobabilities. In this work we derive pattern functions f…
Strong Einstein-Podolsky-Rosen entanglement from a single squeezed light source
Tobias Eberle, Vitus Händchen, Jörg Duhme +3
Einstein-Podolsky-Rosen (EPR) entanglement is a criterion that is more demanding than just certifying entanglement. We theoretically and experimentally analyze the low resource gen…
Initial state preparation with dynamically generated system-environment correlations
C. H. Fleming, B. L. Hu, Albert Roura
The dependence of the dynamics of open quantum systems upon initial correlations between the system and environment is an utterly important yet poorly understood subject. For techn…
Cavity cooling of atoms: Within and without a cavity
André Xuereb, Peter Domokos, Peter Horak +1
We compare the efficiencies of two optical cooling schemes, where a single particle is either inside or outside an optical cavity, under experimentally-realisable conditions. We ev…