Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR528 papers
- University of ViennaAT480 papers
- Vienna Center for Quantum Science and TechnologyAT328 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR275 papers
- European Organization for Nuclear ResearchCH263 papers
- Charles UniversityCZ245 papers
- ETH ZurichCH223 papers
- Institute of High Energy PhysicsCN223 papers
- Université Paris-SaclayFR219 papers
- CEA Paris-SaclayFR215 papers
- University of WarsawPL215 papers
- Massachusetts Institute of TechnologyUS209 papers
22 papers · 2 filters
Atom-field dressed states in slow-light waveguide QED
Giuseppe Calajo, Francesco Ciccarello, Darrick Chang +1
We discuss the properties of atom-photon bound states in waveguide QED systems consisting of single or multiple atoms coupled strongly to a finite-bandwidth photonic channel. Such…
Engineering Long-Lived Collective Dark States in Spin Ensembles
Stefan Putz, Andreas Angerer, Dmitry O. Krimer +5
Ensembles of electron spins in hybrid microwave systems are powerful and versatile components for future quantum technologies. Quantum memories with high storage capacities are one…
Residual error-disturbance uncertainties in successive spin-1/2 measurements tested in matter-wave optics
Bülent Demirel, Stephan Sponar, Georg Sulyok +2
The indeterminacy inherent in quantum measurement is an outstanding character of quantum theory, which manifests itself typically in Heisenberg's error-disturbance uncertainty rela…
Parametric squeezing amplification of Bose-Einstein condensates
Georg Jäger, Tarik Berrada, Jörg Schmiedmayer +2
We theoretically investigate the creation of squeezed states of a Bose-Einstein Condensate (BEC) trapped in a magnetic double well potential. The number or phase squeezed states ar…
Optimal control of complex atomic quantum systems
S. van Frank, M. Bonneau, J. Schmiedmayer +8
Quantum technologies will ultimately require manipulating many-body quantum systems with high precision. Cold atom experiments represent a stepping stone in that direction: a high…
Full-quantum light diode
Filippo Fratini, Roohollah Ghobadi
Unidirectional light transport in one-dimensional nanomaterials at the quantum level is a crucial goal to achieve for upcoming computational devices. We here employ a full-quantum…
Subnanotesla quantum-interference magnetometry with a single spin in diamond
A. Angerer, T. Nöbauer, G. Wachter +5
We demonstrate a magnetometry technique using nitrogen-vacancy centres in diamond which makes use of coherent two-photon transitions. We find that the sensitivity to magnetic field…
Generalized event structures and probabilities
Karl Svozil
For the classical mind, quantum mechanics is boggling enough; nevertheless more bizarre behavior could be imagined, thereby concentrating on propositional structures (empirical log…
PT-symmetry breaking in the steady state of microscopic gain-loss systems
Kosmas V. Kepesidis, Thomas J. Milburn, Julian Huber +3
The phenomenon of PT (parity- and time-reversal) symmetry breaking is conventionally associated with a change in the complex mode spectrum of a non-Hermitian system that marks a tr…
Optimal control of Bose-Einstein condensates in three dimensions
Jan-Frederik Mennemann, Daniel Matthes, Rada-Maria Weishäupl +1
Ultracold gases promise many applications in quantum metrology, simulation and computation. In this context, optimal control theory (OCT) provides a versatile framework for the eff…
Directional spontaneous emission and lateral Casimir-Polder force on an atom close to a nanofiber
Stefan Scheel, Stefan Yoshi Buhmann, Christoph Clausen +1
We study the spontaneous emission of an excited atom close to an optical nanofiber and the resulting scattering forces. For a suitably chosen orientation of the atomic dipole, the…
Forbidden regimes in the distribution of bipartite quantum correlations due to multiparty entanglement
Asutosh Kumar, Himadri Shekhar Dhar, R. Prabhu +2
Monogamy is a nonclassical property that limits the distribution of quantum correlation among subparts of a multiparty system. We show that monogamy scores for different quantum co…
Experimental test of entropic noise-disturbance uncertainty relations for spin-1/2 measurements
Georg Sulyok, Stephan Sponar, Buelent Demirel +4
Information-theoretic definitions for noise and disturbance in quantum measurements were given in Phys. Rev. Lett. 112, 050401 (2014) and a state-independent noise-disturbance unce…
Quantum technologies with hybrid systems
G. Kurizki, P. Bertet, Y. Kubo +4
An extensively pursued current direction of research in physics aims at the development of practical technologies that exploit the effects of quantum mechanics. As part of this ong…
Analytical Study of Quantum Feedback Enhanced Rabi Oscillations
Julia Kabuss, Dmitry O. Krimer, Stefan Rotter +3
We present an analytical solution of the single photon quantum feedback in a cavity quantum electrodynamics system based on a half cavity set-up coupled to a structured continuum.…
Macroscopic quantum resonators (MAQRO): 2015 Update
Rainer Kaltenbaek, Markus Arndt, Markus Aspelmeyer +49
Do the laws of quantum physics still hold for macroscopic objects - this is at the heart of Schrödinger's cat paradox - or do gravitation or yet unknown effects set a limit for mas…
Quantum music
Volkmar Putz, Karl Svozil
We consider ways of conceptualizing, rendering and perceiving quantum music, and quantum art in general. Thereby, we give particular emphasis to its non-classical aspects, such as…
Hybrid quantum device based on NV centers in diamond nanomechanical resonators plus superconducting waveguide cavities
Peng-Bo Li, Yong-Chun Liu, S. -Y. Gao +4
We propose and analyze a hybrid device by integrating a microscale diamond beam with a single built-in nitrogen-vacancy (NV) center spin to a superconducting coplanar waveguide (CP…
A variant of the Kochen-Specker theorem localising value indefiniteness
Alastair A. Abbott, Cristian S. Calude, Karl Svozil
The Kochen-Specker theorem proves the inability to assign, simultaneously, noncontextual definite values to all (of a finite set of) quantum mechanical observables in a consistent…
A Non-Probabilistic Model of Relativised Predictability in Physics
Alastair A. Abbott, Cristian S. Calude, Karl Svozil
Little effort has been devoted to studying generalised notions or models of (un)predictability, yet is an important concept throughout physics and plays a central role in quantum i…
Contextuality in phase space
Ali Asadian, Costantino Budroni, Frank E. S. Steinhoff +2
We present a general framework for contextuality tests in phase space using displacement operators. First, we derive a general condition that a single-mode displacement operator sh…
Hybrid Quantum Systems with Collectively Coupled Spin States: Suppression of Decoherence through Spectral Hole Burning
Dmitry O. Krimer, Benedikt Hartl, Stefan Rotter
Spin ensemble based hybrid quantum systems suffer from a significant degree of decoherence resulting from the inhomogeneous broadening of the spin transition frequencies in the ens…