5.9k citations
- Ludwig-Maximilians-Universität MünchenDE568 papers
- Munich Center for Quantum Science and TechnologyDE404 papers
- Max Planck SocietyDE381 papers
- Centre National de la Recherche ScientifiqueFR143 papers
- Institute of Photonic SciencesES131 papers
- Technical University of MunichDE114 papers
- Universität InnsbruckAT107 papers
- ETH ZurichCH105 papers
- Harvard UniversityUS101 papers
- Austrian Academy of SciencesAT87 papers
- University of ViennaAT83 papers
- Institució Catalana de Recerca i Estudis AvançatsES75 papers
43 papers · 1 filter
Optimal conversion of non--local unitary operations
W. Dür, G. Vidal, J. I. Cirac
We study when a non--local unitary operation acting on two --level systems can probabilistically simulate another one when arbitrary local operations and classical communication…
Entanglement cost of mixed states
G. Vidal, W. Dür, J. I. Cirac
We compute the entanglement cost of several families of bipartite mixed states, including arbitrary mixtures of two Bell states. This is achieved by developing a technique that all…
Intensity-intensity correlations as a probe of interferences - under conditions of none in the intensity
G. S. Agarwal, J. von Zanthier, C. Skornia +1
The different behaviour of first order interferences and second order correlations are investigated for the case of two coherently excited atoms. For intensity measurements this pr…
Secure communication with a publicly known key
Almut Beige, Berthold-Georg Englert, Christian Kurtsiefer +1
We present a scheme for direct and confidential communication between Alice and Bob, where there is no need for establishing a shared secret key first, and where the key used by Al…
Quantum computation with trapped ions in an optical cavity
Jiannis Pachos, Herbert Walther
Two-qubit logical gates are proposed on the basis of two atoms trapped in a cavity setup. Losses in the interaction by spontaneous transitions are efficiently suppressed by employi…
Generation of lattice structures of optical vortices
Alexander Dreischuh, Sotir Chervenkov, Dragomir Neshev +2
We demonstrate experimentally the generation of square and hexagonal lattices of optical vortices and reveal their propagation in a saturable nonlinear medium. If the topological c…