40.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.9k papers
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- University of ArizonaUS1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- Max Planck Institute for PhysicsDE1.8k papers
- Aix-Marseille UniversitéFR1.8k papers
17 papers · 2 filters
Experimental Schmidt Decomposition and Entanglement Detection
Wieslaw Laskowski, Daniel Richart, Christian Schwemmer +2
We introduce an experimental procedure for the detection of quantum entanglement of an unknown quantum state with as few measurements as possible. The method requires neither a pri…
Matter Density and Relativistic Models of Wave Function Collapse
Daniel Bedingham, Detlef Duerr, GianCarlo Ghirardi +3
Mathematical models for the stochastic evolution of wave functions that combine the unitary evolution according to the Schroedinger equation and the collapse postulate of quantum t…
Dressed bound states for attosecond dynamics in strong laser fields
Vladislav S. Yakovlev, Michael Korbman, Armin Scrinzi
We propose a theoretical approach for the interpretation of pump-probe measurements where an attosecond pulse is absorbed in the presence of an intense laser pulse. This approach i…
Rescaling multipartite entanglement measures for mixed states
Oliver Viehmann, Christopher Eltschka, Jens Siewert
A relevant problem regarding entanglement measures is the following: Given an arbitrary mixed state, how does a measure for multipartite entanglement change if general local operat…
Useful Multiparticle Entanglement and Sub-Shot-Noise Sensitivity in Experimental Phase Estimation
Roland Krischek, Christian Schwemmer, Witlef Wieczorek +4
We experimentally demonstrate a general criterion to identify entangled states useful for the estimation of an unknown phase shift with a sensitivity higher than the shot-noise lim…
Spectroscopy of mechanical dissipation in micro-mechanical membranes
Andreas Jöckel, Matthew T. Rakher, Maria Korppi +4
We measure the frequency dependence of the mechanical quality factor (Q) of SiN membrane oscillators and observe a resonant variation of Q by more than two orders of magnitude. The…
Loophole-free Bell test for one atom and less than one photon
N. Sangouard, J. -D. Bancal, N. Gisin +4
We consider the entanglement between two internal states of a single atom and two photon number states describing either the vaccum or a single photon and thus containing, on avera…
Ancilla-assisted sequential approximation of nonlocal unitary operations
Hamed Saberi
We consider the recently proposed "no-go" theorem of Lamata et al [Phys. Rev. Lett. 101, 180506 (2008)] on the impossibility of sequential implementation of global unitary operatio…
Coherence of a qubit stored in Zeeman levels of a single optically trapped atom
Wenjamin Rosenfeld, Jürgen Volz, Markus Weber +1
We experimentally investigate the coherence properties of a qubit stored in the Zeeman substates of the 5S1/2, F=1 hyperfine ground level of a single optically trapped Rb-87 atom.…
Realization of an optomechanical interface between ultracold atoms and a membrane
Stephan Camerer, Maria Korppi, Andreas Jöckel +3
We have realized a hybrid optomechanical system by coupling ultracold atoms to a micromechanical membrane. The atoms are trapped in an optical lattice, which is formed by retro-ref…
Cavity sideband cooling of trapped molecules
Markus Kowalewski, Giovanna Morigi, Pepijn W. H. Pinkse +1
The efficiency of cavity sideband cooling of trapped molecules is theoretically investigated for the case where the IR transition between two rovibrational states is used as a cycl…
Coupling ultracold atoms to mechanical oscillators
David Hunger, Stephan Camerer, Maria Korppi +3
In this article we discuss and compare different ways to engineer an interface between ultracold atoms and micro- and nanomechanical oscillators. We start by analyzing a direct mec…
Deterministic spin-wave interferometer based on Rydberg blockade
Ran Wei, Bo Zhao, Youjin Deng +2
The spin-wave (SW) NOON state is an -particle Fock state with two atomic spin-wave modes maximally entangled. Attributed to the property that the phase is sensitive to collectiv…
Landau-Zener sweeps and sudden quenches in coupled Bose-Hubbard chains
Christian Kasztelan, Stefan Trotzky, Yu-Ao Chen +4
We simulate numerically the dynamics of strongly correlated bosons in a two-leg ladder subject to a time-dependent energy bias between the two chains. When all atoms are initially…
Polynomial invariants for discrimination and classification of four-qubit entanglement
Oliver Viehmann, Christopher Eltschka, Jens Siewert
It is well known that the number of entanglement classes in SLOCC (stochastic local operations and classical communication) classifications increases with the number of qubits and…
Quantum Eavesdropping without Interception: An Attack Exploiting the Dead Time of Single Photon Detectors
Henning Weier, Harald Krauss, Markus Rau +3
The security of quantum key distribution (QKD) can easily be obscured if the eavesdropper can utilize technical imperfections of the actual implementation. Here we describe and exp…
Highly Entangled States With Almost No Secrecy
Matthias Christandl, Norbert Schuch, Andreas Winter
In this paper we illuminate the relation between entanglement and secrecy by providing the first example of a quantum state that is highly entangled, but from which, nevertheless,…