Kay, A.: Role of rotational invariance in the properties of Hamiltonians. Physical Review A 80 (4), 040301 (2009)

Schuch, N.; Verstraete, F.: Computational complexity of interacting electrons and fundamental limitations of density functional theory. Nature Physics 5 (10), pp. 732 - 735 (2009)

Weichselbaum, A.; Verstraete, F.; Schollwock, U.; Cirac, J. I.; von Delft, J.: Variational matrix-product-state approach to quantum impurity models. Physical Review B 80 (16), 165117 (2009)

Eckholt, M.; García-Ripoll, J. J.: Correlated hopping of bosonic atoms induced by optical lattices. New Journal of Physics 11, 093028 (2009)

Bendersky, A.; Pastawski, F.; Paz, J. P.: Selective and efficient quantum process tomography. Physical Review A 80 (3), 032116 (2009)

Montangero, S.; Rizzi, M.; Giovannetti, V.; Fazio, R.: Critical exponents with a multiscale entanglement renormalization Ansatz channel. Physical Review B 80 (11), 113103 (2009)

Verstraete, F.; Wolf, M. M.; Cirac, J. I.: Quantum computation and quantum-state engineering driven by dissipation. Nature Physics 5 (9), pp. 633 - 636 (2009)

Mezzacapo, F.; Schuch, N.; Boninsegni, M.; Cirac, J. I.: Ground-state properties of quantum many-body systems: entangled-plaquette states and variational Monte Carlo. New Journal of Physics 11, 083026 (2009)

Pastawski, F.; Kay, A.; Schuch, N.; Cirac, J. I.: How Long Can a Quantum Memory Withstand Depolarizing Noise? Physical Review Letters 103 (8), 080501 (2009)

Bastin, T.; Krins, S.; Mathonet, P.; Godefroid, M.; Lamata, L.; Solano, E.: Operational Families of Entanglement Classes for Symmetric N-Qubit States. Physical Review Letters 103 (7), 070503 (2009)

Hammerer, K.; Wallquist, M.; Genes, C.; Ludwig, M.; Marquardt, F.; Treutlein, P.; Zoller, P.; Ye, J.; Kimble, H. J.: Strong Coupling of a Mechanical Oscillator and a Single Atom. Physical Review Letters 103 (6), 063005 (2009)

Tóth, G.; Wieczorek, W.; Krischek, R.; Kiesel, N.; Michelberger, P.; Weinfurter, H.: Practical methods for witnessing genuine multi-qubit entanglement in the vicinity of symmetric states. New Journal of Physics 11, 083002 (2009)

Wasilewski, W.; Fernholz, T.; Jensen, K.; Madsen, L. S.; Krauter, H.; Muschik, C.; Polzik, E. S.: Generation of two-mode squeezed and entangled light in a single temporal and spatial mode. Optics Express 17 (16), pp. 14444 - 14457 (2009)

Hübener, R.; Van den Nest, M.; Dür, W.; Briegel, H. J.: Classical spin systems and the quantum stabilizer formalism: General mappings and applications. Journal of Mathematical Physics 50 (8), 083303 (2009)

Mendl, C. B.; Wolf, M. M.: Unital Quantum Channels - Convex Structure and Revivals of Birkhoff's Theorem. Communications in Mathematical Physics 289 (3), pp. 1057 - 1086 (2009)

Saberi, H.; Weichselbaum, A.; Lamata, L.; Pérez-García, D.; von Delft, J.; Solano, E.: Constrained optimization of sequentially generated entangled multiqubit states. Physical Review A 80 (2), 022334 (2009)

Cai, J. M.; Dür, W.; Van den Nest, M.; Miyake, A.; Briegel, H. J.: Quantum Computation in Correlation Space and Extremal Entanglement. Physical Review Letters 103 (5), 050503 (2009)

Kay, A.; Kaszlikowski, D.; Ramanathan, R.: Optimal Cloning and Singlet Monogamy. Physical Review Letters 103 (5), 050501 (2009)

Wieczorek, W.; Krischek, R.; Kiesel, N.; Michelberger, P.; Tóth, G.; Weinfurter, H.: Experimental Entanglement of a Six-Photon Symmetric Dicke State. Physical Review Letters 103 (2), 020504 (2009)

De las Cuevas, G.; Dür, W.; Van den Nest, M.; Briegel, H. J.: Completeness of classical spin models and universal quantum computation. Journal of Statistical Mechanics - Theory and Experiment, P07001 (2009)