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View article: Observation of area laws in an interacting quantum field simulator
Observation of area laws in an interacting quantum field simulator Open
Information shared between parties quantifies their correlation. The encoding of correlations across space and time characterises the structure, history, and interactions of systems. One of the most fundamental properties that emerges from…
View article: Interferometric detection of continuous-variable entanglement using two states
Interferometric detection of continuous-variable entanglement using two states Open
The efficient witnessing and certification of entanglement is necessitated by its ubiquitous use in various aspects of quantum technologies. In the case of continuous-variable bipartite systems, the Shchukin-Vogel hierarchy gives necessary…
View article: Removal of EpCAM-positive tumor cells during intraoperative blood salvage– A pivotal multicenter clinical study (REMOVE)
Removal of EpCAM-positive tumor cells during intraoperative blood salvage– A pivotal multicenter clinical study (REMOVE) Open
The study demonstrates the efficacy, safety and feasibility of CATUVAB® for the re-infusion of autologous EC processed by a cell salvage device during high-blood-loss cancer surgeries. These promising results have the potential to re-defin…
View article: Evaluation of GaN Transistors for Grid-Connected 3-Level T-Type Inverters
Evaluation of GaN Transistors for Grid-Connected 3-Level T-Type Inverters Open
This paper presents a complete workflow for the evaluation of GaN transistors in voltage source inverters. With the associated high switching speed of transistors based on GaN, it is important to consider some critical points in the design…
View article: Configurable photonic simulator for quantum field dynamics
Configurable photonic simulator for quantum field dynamics Open
Quantum field simulators provide unique opportunities for investigating the dynamics of quantum fields through tabletop experiments. A primary drawback of standard encoding schemes is their rigidity: altering the theory, its coupling geome…
View article: Detecting genuine non-Gaussian entanglement
Detecting genuine non-Gaussian entanglement Open
Efficiently certifying non-Gaussian entanglement in continuous-variable quantum systems is a central challenge for advancing quantum information processing, photonic quantum computing, and metrology. Here, we put forward continuous-variabl…
View article: Entropy estimation in a spin-1 Bose-Einstein condensate
Entropy estimation in a spin-1 Bose-Einstein condensate Open
We investigate the information extractable from measurement distributions of two non-commuting spin observables in a multi-well spin-1 Bose–Einstein condensate. We provide a variety of analytic and numerical evidence that suitably chosen c…
View article: Interferometric detection of continuous-variable entanglement using two states
Interferometric detection of continuous-variable entanglement using two states Open
The efficient witnessing and certification of entanglement is necessitated by its ubiquitous use in various aspects of quantum technologies. In the case of continuous-variable bipartite systems, the Shchukin--Vogel hierarchy gives necessar…
View article: Quantum gravity, hydrodynamics and emergent cosmology: a collection of perspectives
Quantum gravity, hydrodynamics and emergent cosmology: a collection of perspectives Open
View article: From bosons and fermions to spins: A multi-mode extension of the Jordan-Schwinger map
From bosons and fermions to spins: A multi-mode extension of the Jordan-Schwinger map Open
The Jordan-Schwinger map is widely employed to switch between bosonic or fermionic mode operators and spin observables, with numerous applications ranging from quantum field theories of magnetism and ultracold quantum gases to quantum opti…
View article: Entropic distinguishability of quantum fields in phase space
Entropic distinguishability of quantum fields in phase space Open
We present a general way of quantifying the entropic uncertainty of quantum field configurations in phase space in terms of entropic distinguishability with respect to the vacuum. Our approach is based on the functional Husimi -distributio…
View article: Entropy estimation in a spin-1 Bose-Einstein condensate
Entropy estimation in a spin-1 Bose-Einstein condensate Open
We investigate the information extractable from measurement distributions of two non-commuting spin observables in a multi-well spin-1 Bose-Einstein condensate. We provide a variety of analytic and numerical evidence that suitably chosen c…
View article: Area laws and thermalization from classical entropies in a Bose-Einstein condensate
Area laws and thermalization from classical entropies in a Bose-Einstein condensate Open
The scaling of local quantum entropies is of utmost interest for characterizing quantum fields, many-body systems, and gravity. Despite their importance, theoretically and experimentally accessing quantum entropies is challenging as they a…
View article: Information and majorization theory for fermionic phase-space distributions
Information and majorization theory for fermionic phase-space distributions Open
We put forward several information-theoretic measures for analyzing the uncertainty of fermionic phase-space distributions using the theory of supernumbers. In contrast to the bosonic case, the anticommuting nature of Grassmann variables a…
View article: Accessing continuous-variable entanglement witnesses with multimode spin observables
Accessing continuous-variable entanglement witnesses with multimode spin observables Open
We present several measurement schemes for accessing separability criteria for continuous-variable bipartite quantum systems. Starting from moments of the bosonic mode operators, criteria suitable to witness entanglement are expressed in t…
View article: Entropic distinguishability of quantum fields in phase space
Entropic distinguishability of quantum fields in phase space Open
We present a general way of quantifying the entropic uncertainty of quantum field configurations in phase space in terms of entropic distinguishability with respect to the vacuum. Our approach is based on the functional Husimi $Q$-distribu…
View article: Accessing continuous-variable entanglement witnesses with multimode spin observables
Accessing continuous-variable entanglement witnesses with multimode spin observables Open
We present several measurement schemes for accessing separability criteria for continuous-variable bipartite quantum systems. Starting from moments of the bosonic mode operators, criteria suitable to witness entanglement are expressed in t…
View article: Validity of Whitham's modulation equations for dissipative systems with a conservation law: Phase dynamics in a generalized Ginzburg-Landau system
Validity of Whitham's modulation equations for dissipative systems with a conservation law: Phase dynamics in a generalized Ginzburg-Landau system Open
It is well-established that Whitham's modulation equations approximate the dynamics of slowly varying periodic wave trains in dispersive systems. We are interested in its validity in dissipative systems with a conservation law. The prototy…
View article: General class of continuous variable entanglement criteria
General class of continuous variable entanglement criteria Open
We present a general class of entanglement criteria for continuous variable systems. Our criteria are based on the Husimi $Q$-distribution and allow for optimization over the set of all concave functions rendering them extremely general an…
View article: Detecting continuous variable entanglement in phase space with the $Q$-distribution
Detecting continuous variable entanglement in phase space with the $Q$-distribution Open
We prove a general class of continuous variable entanglement criteria based on the Husimi $Q$-distribution, which represents a quantum state in canonical phase space, by employing a theorem by Lieb and Solovej. We discuss their generality,…
View article: Optimizing detection of continuous variable entanglement for limited data
Optimizing detection of continuous variable entanglement for limited data Open
We explore the advantages of a class of entanglement criteria for continuous variable systems based on the Husimi $Q$-distribution in scenarios with sparse experimental data. The generality of these criteria allows optimizing them for a gi…
View article: Rohstoffe
Rohstoffe Open
View article: Curved and expanding spacetime geometries in Bose-Einstein condensates
Curved and expanding spacetime geometries in Bose-Einstein condensates Open
Phonons have the characteristic linear dispersion relation of massless relativistic particles. They arise as low energy excitations of Bose-Einstein condensates and, in nonhomogeneous situations, are governed by a space- and time-dependent…
View article: Potential of FX06 to prevent disease progression in hospitalized non-intubated COVID-19 patients — the randomized, EU-wide, placebo-controlled, phase II study design of IXION
Potential of FX06 to prevent disease progression in hospitalized non-intubated COVID-19 patients — the randomized, EU-wide, placebo-controlled, phase II study design of IXION Open
View article: Erratum: Entropic entanglement criteria in phase space [Phys. Rev. A <b>105</b>, 012409 (2022)]
Erratum: Entropic entanglement criteria in phase space [Phys. Rev. A <b>105</b>, 012409 (2022)] Open
Received 11 July 2022DOI:https://doi.org/10.1103/PhysRevA.106.029902©2022 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasEntanglement detectionQuantum entanglementQuantum information processingQuantum opticsQuantum …
View article: Scalar quantum fields in cosmologies with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:math>spacetime dimensions
Scalar quantum fields in cosmologies withspacetime dimensions Open
Motivated by the possibility to use Bose-Einstein condensates as quantum simulators for spacetime curvature, we study a massless relativistic scalar quantum field in spatially curved Friedmann-Lema\^itre-Robertson-Walker universes with $d=…
View article: Relative entropic uncertainty relation for scalar quantum fields
Relative entropic uncertainty relation for scalar quantum fields Open
Entropic uncertainty is a well-known concept to formulate uncertainty relations for continuous variable quantum systems with finitely many degrees of freedom. Typically, the bounds of such relations scale with the number of oscillator mode…
View article: Curved and expanding spacetime geometries in Bose-Einstein condensates
Curved and expanding spacetime geometries in Bose-Einstein condensates Open
Phonons have the characteristic linear dispersion relation of massless relativistic particles. They arise as low energy excitations of Bose-Einstein condensates and, in nonhomogeneous situations, are governed by a space- and time-dependent…
View article: Quantum field simulator for dynamics in curved spacetime
Quantum field simulator for dynamics in curved spacetime Open
The observed large-scale structure in our Universe is seen as a result of quantum fluctuations amplified by spacetime evolution. This, and related problems in cosmology, asks for an understanding of the quantum fields of the standard model…
View article: Scalar quantum fields in cosmologies with 2+1 spacetime dimensions
Scalar quantum fields in cosmologies with 2+1 spacetime dimensions Open
Motivated by the possibility to use Bose-Einstein condensates as quantum simulators for spacetime curvature, we study a massless relativistic scalar quantum field in spatially curved Friedmann-Lemaître-Robertson-Walker universes with $d=2+…