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
- University of MichiganUS2k papers
- Institute for High Energy PhysicsES1.9k papers
- University College LondonGB1.9k papers
- University of ManchesterGB1.9k papers
- University of BonnDE1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.8k papers
- Brookhaven National LaboratoryUS1.8k papers
- 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
26 papers · 2 filters
Experimental implementation of a four-player quantum game
Christian Schmid, Adrian P. Flitney, Witlef Wieczorek +3
Game theory is central to the understanding of competitive interactions arising in many fields, from the social and physical sciences to economics. Recently, as the definition of i…
Addendum to "Experimental demonstration of a quantum protocol for Byzantine agreement and liar detection" arXiv:0710.0290
Sascha Gaertner, Mohamed Bourennane, Christian Kurtsiefer +2
Gao et al. [Phys. Rev. Lett. 101, 208901 (2008)] have described a possible intercept-resend attack for the quantum protocol for detectable Byzantine agreement in Phys. Rev. Lett. 1…
Absolute absorption spectroscopy based on molecule interferometry
Stefan Nimmrichter, Klaus Hornberger, Hendrik Ulbricht +1
We propose a new method to measure the absolute photon absorption cross section of neutral molecules in a molecular beam. It is independent of our knowledge of the particle beam de…
Hund's paradox and the collisional stabilization of chiral molecules
Johannes Trost, Klaus Hornberger
We identify the dominant collisional decoherence mechanism which serves to stabilize and super-select the configuration states of chiral molecules. A high-energy description of thi…
On the long time behavior of stochastic Schroedinger evolutions
Angelo Bassi, Detlef Duerr, Martin Kolb
We discuss the time evolution of the wave function which is solution of a stochastic Schroedinger equation describing the dynamics of a free quantum particle subject to spontaneous…
Constrained optimization of sequentially generated entangled multiqubit states
Hamed Saberi, Andreas Weichselbaum, Lucas Lamata +3
We demonstrate how the matrix-product state formalism provides a flexible structure to solve the constrained optimization problem associated with the sequential generation of entan…
Quantum teleportation and entanglement swapping with linear optics logic gates
Christian Schmid, Nikolai Kiesel, Ulrich K. Weber +3
We report on the usage of a linear optics phase gate for distinguishing all four Bell states simultaneously in a quantum teleportation and entanglement swapping protocol. This is d…
Post-selection technique for quantum channels with applications to quantum cryptography
Matthias Christandl, Robert Koenig, Renato Renner
We propose a general method for studying properties of quantum channels acting on an n-partite system, whose action is invariant under permutations of the subsystems. Our main resu…
Long-distance atom-photon entanglement
W. Rosenfeld, F. Hocke, F. Henkel +4
We report the observation of entanglement between a single trapped atom and a single photon at remote locations. The degree of coherence of the entangled atom-photon pair is verifi…
On the Weak Measurement of Velocity in Bohmian Mechanics
Detlef Duerr, Sheldon Goldstein, Nino Zanghi
In a recent article (New Journal of Physics 9, 165, 2007), Wiseman has proposed the use of so-called weak measurements for the determination of the velocity of a quantum particle a…
Optimal control of a leaking qubit
Patrick Rebentrost, Frank K. Wilhelm
Physical implementations of quantum bits can contain coherent transitions to energetically close non-qubit states. In particular, for anharmonic oscillator systems such as the supe…
A lower bound on the dimension of a quantum system given measured data
Stephanie Wehner, Matthias Christandl, Andrew C. Doherty
We imagine an experiment on an unknown quantum mechanical system in which the system is prepared in various ways and a range of measurements are performed. For each measurement M a…
Spin squeezing in a bimodal condensate: spatial dynamics and particle losses
Yun Li, Philipp Treutlein, Jakob Reichel +1
We propose an analytical method to study the entangled spatial and spin dynamics of interacting bimodal Bose-Einstein condensates. We show that at particular times during the evolu…
Bell test for the free motion of material particles
Clemens Gneiting, Klaus Hornberger
We present a scheme to establish non-classical correlations in the motion of two macroscopically separated massive particles without resorting to entanglement in their internal deg…
Experimental observation of an entire family of four-photon entangled states
Witlef Wieczorek, Christian Schmid, Nikolai Kiesel +3
A single linear optical set-up is used to observe an entire family of four-photon entangled states. This approach breaks with the inflexibility of present linear-optical set-ups us…
Space-QUEST: Experiments with quantum entanglement in space
Rupert Ursin, Thomas Jennewein, Johannes Kofler +36
The European Space Agency (ESA) has supported a range of studies in the field of quantum physics and quantum information science in space for several years, and consequently we hav…
Multi-photon entanglement and interferometry
Jian-Wei Pan, Zeng-Bing Chen, Chao-Yang Lu +3
Multi-photon interference reveals strictly non-classical phenomena. Its applications range from fundamental tests of quantum mechanics to photonic quantum information processing, w…
Collinear source of polarization-entangled photon pairs at non-degenerate wavelengths
Pavel Trojek, Harald Weinfurter
We report on a simple but highly efficient source of polarization-entangled photon pairs at non-degenerate wavelengths. The fully collinear configuration of the source enables very…
Discriminating multi-partite entangled states
Christian Schmid, Nikolai Kiesel, Wiesław Laskowski +3
The variety of multi-partite entangled states enables numerous applications in novel quantum information tasks. In order to compare the suitability of different states from a theor…
A quantum information-theoretic proof of the relation between Horn's problem and the Littlewood-Richardson coefficients
Matthias Christandl
Horn's problem asks for the conditions on sets of integers mu, nu and lambda that ensure the existence of Hermitian operators A, B and A+B with spectra mu, nu and lambda, respectiv…
Theory of near-field matter wave interference beyond the eikonal approximation
Stefan Nimmrichter, Klaus Hornberger
A generalized description of Talbot-Lau interference with matter waves is presented, which accounts for arbitrary grating interactions and realistic beam characteristics. The dispe…
Qantum theory of optomechanical cooling
Florian Marquardt, A. A. Clerk, S. M. Girvin
We review the quantum theory of cooling of a mechanical oscillator subject to the radiation pressure force due to light circulating inside a driven optical cavity. Such optomechani…
A Kapitza-Dirac-Talbot-Lau interferometer for highly polarizable molecules
Stefan Gerlich, Lucia Hackermueller, Klaus Hornberger +8
Research on matter waves is a thriving field of quantum physics and has recently stimulated many investigations with electrons, neutrons, atoms, Bose-condensed ensembles, cold clus…
Sudden Birth Versus Sudden Death of Entanglement in Multipartite Systems
C. E. Lopez, G. Romero, F. Lastra +2
We study the entanglement dynamics of two cavities interacting with independent reservoirs. Expectedly, we observe that, as the cavity entanglement is depleted, it is transferred t…