2.4k citations
- Austrian Academy of SciencesAT62 papers
- Institute for Quantum Optics and Quantum Information InnsbruckAT60 papers
- Imperial College LondonGB8 papers
- Max Planck Institute of Quantum OpticsDE8 papers
- Hungarian Academy of SciencesHU7 papers
- St Petersburg UniversityRU7 papers
- Heidelberg UniversityDE6 papers
- Institute for Solid State Physics and OpticsHU6 papers
- University of ViennaAT6 papers
- Durham UniversityGB4 papers
- Institute of Photonic SciencesES4 papers
- Karlsruhe Institute of TechnologyDE4 papers
11 papers · 2 filters
Graph states as ground states of many-body spin-1/2 Hamiltonians
M. Van den Nest, K. Luttmer, W. Dür +1
We consider the problem whether graph states can be ground states of local interaction Hamiltonians. For Hamiltonians acting on n qubits that involve at most two-body interactions,…
Sequential Generation of Matrix-Product States in Cavity QED
C. Schoen, K. Hammerer, M. M. Wolf +2
We study the sequential generation of entangled photonic and atomic multi-qubit states in the realm of cavity QED. We extend the work of C. Schoen et al. [Phys. Rev. Lett. 95, 1105…
An atom-photon pair laser
Thomas Salzburger, Helmut Ritsch
We study the quantum dynamics of an ultracold atomic gas in a deep optical lattice within an optical high- resonator. The atoms are coherently illuminated with the cavity resona…
High fidelity transfer of an arbitrary quantum state between harmonic oscillators
K. Jahne, B. Yurke, U. Gavish
It is shown that by switching a specific time-dependent interaction between a harmonic oscillator and a transmission line (a waveguide, an optical fiber, etc.) the quantum state of…
On the role of memory errors in quantum repeaters
L. Hartmann, B. Kraus, H. -J. Briegel +1
We investigate the influence of memory errors in the quantum repeater scheme for long-range quantum communication. We show that the communication distance is limited in standard op…
Covariance matrices and the separability problem
O. Gühne, P. Hyllus, O. Gittsovich +1
We propose a unifying approach to the separability problem using covariance matrices of locally measurable observables. From a practical point of view, our approach leads to strong…