3.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for Quantum Optics and Quantum Information InnsbruckAT973 papers
- Universität InnsbruckAT944 papers
- Institute of High Energy PhysicsCN842 papers
- University of ViennaAT835 papers
- Centre National de la Recherche ScientifiqueFR824 papers
- Space Research InstituteRU796 papers
- European Organization for Nuclear ResearchCH470 papers
- ETH ZurichCH461 papers
- Korea UniversityKR441 papers
- National Taiwan UniversityTW436 papers
- Panjab UniversityIN432 papers
- Sungkyunkwan UniversityKR432 papers
42 papers · 2 filters
Significant-loophole-free test of Bell's theorem with entangled photons
Marissa Giustina, Marijn A. M. Versteegh, Sören Wengerowsky +19
Local realism is the worldview in which physical properties of objects exist independently of measurement and where physical influences cannot travel faster than the speed of light…
Cyclic transformation of orbital angular momentum modes
Florian Schlederer, Mario Krenn, Robert Fickler +2
The spatial modes of photons are one realization of a QuDit, a quantum system that is described in a D-dimensional Hilbert space. In order to perform quantum information tasks with…
Quantum simulation of the dynamical Casimir effect with trapped ions
Nils Trautmann, Philipp Hauke
Quantum vacuum fluctuations are a direct manifestation of Heisenberg's uncertainty principle. The dynamical Casimir effect allows for the observation of these vacuum fluctuations b…
Heisenberg-Weyl Observables: Bloch vectors in phase space
Ali Asadian, Paul Erker, Marcus Huber +1
We introduce a Hermitian generalization of Pauli matrices to higher dimensions which is based on Heisenberg-Weyl operators. The complete set of Heisenberg-Weyl observables allows u…
Quantifying high dimensional entanglement with two mutually unbiased bases
Paul Erker, Mario Krenn, Marcus Huber
We derive a framework for quantifying entanglement in multipartite and high dimensional systems using only correlations in two unbiased bases. We furthermore develop such bounds in…
Quantum interference in heterogeneous superconducting-photonic circuits on a silicon chip
Carsten Schuck, Xiang Guo, Linran Fan +3
Quantum information processing holds great promise for communicating and computing data efficiently. However, scaling current photonic implementation approaches to larger system si…
An optomechanical elevator: Transport of a Bloch oscillating Bose-Einstein condensate up and down an optical lattice by cavity sideband amplification and cooling
B. Prasanna Venkatesh, D. H. J. O'Dell, J. Goldwin
We analyze the optomechanics of an atomic Bose-Einstein condensate interacting with the optical lattice inside a laser-pumped optical cavity and subject to a uniform bias force suc…
Magnetic Rigid Rotor in the Quantum Regime: Theoretical Toolbox
Cosimo C. Rusconi, Oriol Romero-Isart
We describe the quantum dynamics of a magnetic rigid rotor in the mesoscopic scale where the Einstein-De Haas effect is predominant. In particular, we consider a single-domain magn…
Photonic Quantum Circuits with Time Delays
Hannes Pichler, Peter Zoller
We study the dynamics of photonic quantum circuits consisting of nodes coupled by quantum channels. We are interested in the regime where time delay in communication between the no…
Partial Polarization by Quantum Distinguishability
Mayukh Lahiri, Armin Hochrainer, Radek Lapkiewicz +2
Partial polarization is the manifestation of the correlation between two mutually orthogonal transverse field components associated with a light beam. We show both theoretically an…
Quantum walks on embedded hypercubes: Nonsymmetric and nonlocal cases
Adi Makmal, Markus Tiersch, Clemens Ganahl +1
The expected hitting time of discrete quantum walks on a hypercube (HC) is numerically known to be exponentially shorter than that of their classical analogs in terms of the scalin…
Indefinite causal structures for continuous-variable systems
Flaminia Giacomini, Esteban Castro-Ruiz, Časlav Brukner
In all our well-established theories, it is assumed that events are embedded in a global causal structure such that, for every pair of events, the causal order between them is alwa…
Physical meaning of the radial index of Laguerre-Gauss beams
William N. Plick, Mario Krenn
The Laguerre-Gauss modes are a class of fundamental and well-studied optical fields. These stable, shape-invariant photons - exhibiting circular-cylindrical symmetry - are familiar…
Multi-photon entanglement in high dimensions
Mehul Malik, Manuel Erhard, Marcus Huber +3
Entanglement lies at the heart of quantum mechanics as a fundamental tool for testing its deep rift with classical physics, while also providing a key resource for quantum tech…
Measuring multipartite entanglement via dynamic susceptibilities
Philipp Hauke, Markus Heyl, Luca Tagliacozzo +1
Entanglement plays a central role in our understanding of quantum many body physics, and is fundamental in characterising quantum phases and quantum phase transitions. Developing p…
Automated Search for new Quantum Experiments
Mario Krenn, Mehul Malik, Robert Fickler +2
Quantum mechanics predicts a number of at first sight counterintuitive phenomena. It is therefore a question whether our intuition is the best way to find new experiments. Here we…
Many-body localization in a quantum simulator with programmable random disorder
Jacob Smith, Aaron Lee, Philip Richerme +6
When a system thermalizes it loses all local memory of its initial conditions. This is a general feature of open systems and is well described by equilibrium statistical mechanics.…
Coherent controlization using superconducting qubits
Nicolai Friis, Alexey A. Melnikov, Gerhard Kirchmair +1
Coherent controlization, i.e., coherent conditioning of arbitrary single- or multi-qubit operations on the state of one or more control qubits, is an important ingredient for the f…
Realization of a scalable Shor algorithm
Thomas Monz, Daniel Nigg, Esteban A. Martinez +6
Quantum computers are able to outperform classical algorithms. This was long recognized by the visionary Richard Feynman who pointed out in the 1980s that quantum mechanical proble…
Twisted photon entanglement through turbulent air across Vienna
Mario Krenn, Johannes Handsteiner, Matthias Fink +2
Photons with a twisted phase front can carry a discrete, in principle unbounded amount of orbital angular momentum (OAM). The large state space allows for complex types of entangle…
On the quantum measurement problem
Caslav Brukner
In this paper, I attempt a personal account of my understanding of the measurement problem in quantum mechanics, which has been largely in the tradition of the Copenhagen interpret…
Single pairs of time-bin entangled photons
Marijn A. M. Versteegh, Michael E. Reimer, Aafke A. van den Berg +5
Time-bin entangled photons are ideal for long-distance quantum communication via optical fibers. Here we present a source where, even at high creation rates, each excitation pulse…
Sympathetic cooling and detection of a hot trapped ion by a cold one
M. Guggemos, D. Heinrich, O. A. Herrera-Sancho +2
We investigate the dynamics of an ion sympathetically cooled by another laser-cooled ion or small ion crystal. To this end, we develop simple models of the cooling dynamics in the…
CP(N-1) Quantum Field Theories with Alkaline-Earth Atoms in Optical Lattices
C. Laflamme, W. Evans, M. Dalmonte +5
We propose a cold atom implementation to attain the continuum limit of (1+1)-d CP(N-1) quantum field theories. These theories share important features with (3+1)-d QCD, such as asy…