Moreno, E.; Garcia-Vidal, F. J.; Erni, D.; Cirac, J. I.; Martin-Moreno, L.: Theory of Plasmon-Assisted Transmission of Entangled Photons. Physical Review Letters 92 (23), 236801 (2004)

Vollbrecht, K. G. H.; Werner, R. F.; Wolf, M. M.: Irreversibility of entanglement distillation for a class of symmetric states. Physical Review A 69 (6), 062304 (2004)

Porras, D.; Cirac, J. I.: Effective quantum spin systems with trapped ions. Physical Review Letters 92 (20), 207901 (2004)

Paredes, B.; Widera, A.; Murg, V.; Mandel, O.; Fölling, S.; Cirac, J. I.; Shlyapnikov, G. V.; Hänsch, T. W.; Bloch, I.: Tonks-Girardeau gas of ultracold atoms in an optical lattice. Nature 429 (6989), pp. 277 - 281 (2004)

Tóth, G.: Entanglement detection in optical lattices of bosonic atoms with collective measurements. Physical Review A 69 (5), 052327 (2004)

Wolf, M. M.; Giedke, G.; Krüger, O.; Werner, R. F.; Cirac, J. I.: Gaussian entanglement of formation. Physical Review A 69 (5), 052320 (2004)

Jungreuthmayer, C.; Geissler, M.; Zanghellini, J.; Brabec, T.: Microscopic analysis of large-cluster explosion in intense laser fields. Physical Review Letters 92 (13), 133401 (2004)

Murg, V.; Cirac, J. I.: Adiabatic time evolution in spin systems. Physical Review A 69 (4), 042320 (2004)

Acin, A.; Cirac, J. I.; Masanes, L.: Multipartite bound information exists and can be activated. Physical Review Letters 92 (10), 107903 (2004)

Cirac, J. I.; Zoller, P.: New frontiers in quantum information with atoms and ions. Physics Today 57 (3), pp. 38 - 44 (2004)

Schuch, N.; Verstraete, F.; Cirac, J. I.: Nonlocal resources in the presence of superselection rules. Physical Review Letters 92 (8), 087904 (2004)

Verstraete, F.; Martín-Delgado, M. A.; Cirac, J. I.: Diverging entanglement length in gapped quantum spin systems. Physical Review Letters 92 (8), 087201 (2004)

Wolf, M. M.; Verstraete, F.; Cirac, J. I.: Entanglement frustration for Gaussian states on symmetric graphs. Physical Review Letters 92 (8), 087903 (2004)

Verstraete, F.; Popp, M.; Cirac, J. I.: Entanglement versus correlations in spin systems. Physical Review Letters 92 (2), 027901 (2004)

Garcia-Ripoll, J. J.; Cirac, J. I.; Zoller, P.; Kollath, C.; Schollwock, U.; von Delft, J.: Variational ansatz for the superfluid Mott-insulator transition in optical lattices. Optics Express 12 (1), pp. 42 - 54 (2004)

Kraus, B.; Cirac, J. I.: Discrete entanglement distribution with squeezed light. Physical Review Letters 92 (1), 013602 (2004)

Miyake, A.; Verstraete, F.: Multipartite entanglement in 2x2xn quantum systems. Physical Review A 69 (1), 012101 (2004)

Tóth, G.; Simon, C.; Cirac, J. I.: Entanglement detection based on interference and particle counting. Physical Review A 68 (6), 062310 (2003)

Garcia-Ripoll, J. J.; Zoller, P.; Cirac, J. I.: Speed Optimized Two-Qubit Gates with Laser Coherent Control Techniques for Ion Trap Quantum Computing. Physical Review Letters 91 (15), 157901 (2003)

Rabl, P.; Daley, A. J.; Fedichev, P. O.; Cirac, J. I.; Zoller, P.: Defect-Suppressed Atomic Crystals in an Optical Lattice. Physical Review Letters 91 (11), 110403 (2003)