Walz, J.; Hänsch, T. W.: A proposal to measure antimatter gravity using ultracold antihydrogen atoms. General Relativity and Gravitation 36 (3), S. 561 - 570 (2004)

Bourennane, M.; Eibl, M.; Kurtsiefer, C.; Gaertner, S.; Weinfurter, H.; Gühne, O.; Hyllus, P.; Bruss, D.; Lewenstein, M.; Sanpera, A.: Experimental detection of multipartite entanglement using witness operators. Physical Review Letters 92 (8), 087902 (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)

Kienberger, R.; Goulielmakis, E.; Uiberacker, M.; Baltuska, A.; Yakovlev, V.; Bammer, F.; Scrinzi, A.; Westerwalbesloh, T.; Kleineberg, U.; Heinzmann, U. et al.; Drescher, M.; Krausz, F.: Atomic transient recorder. Nature 427 (6977), S. 817 - 821 (2004)

Apolonski, A.; Dombi, P.; Paulus, G. G.; Kakehata, M.; Holzwarth, R.; Udem, T.; Lemell, C.; Torizuka, K.; Burgdorfer, J.; Hänsch, T. W. et al.; Krausz, F.: Observation of light-phase-sensitive photoemission from a metal. Physical Review Letters 92 (7), 073902 (2004)

Apolonski, A.; Dombi, P.; Paulus, G. G.; Kakehata, M.; Holzwarth, R.; Udem, T.; Lemell, C.; Torizuka, K.; Burgdorfer, J.; Hänsch, T. W. et al.; Krausz, F.: Observation of light-phase-sensitive photoemission from a metal. Physical Review Letters 92 (7), 073902 (2004)

Apolonski, A.; Dombi, P.; Paulus, G. G.; Kakehata, M.; Holzwarth, R.; Udem, T.; Lemell, C.; Torizuka, K.; Burgdorfer, J.; Hänsch, T. W. et al.; Krausz, F.: Observation of light-phase-sensitive photoemission from a metal. Physical Review Letters 92 (7), 073902 (2004)

Eibl, M.; Kiesel, N.; Bourennane, M.; Kurtsiefer, C.; Weinfurter, H.: Experimental realization of a three-qubit entangled W state. Physical Review Letters 92 (7), 077901 (2004)

Fuß, W.; Kosmidis, C.; Schmid, W. E.; Trushin, S. A.: The lifetime of the perpendicular minimum of cis-stilbene observed by dissociative intense-laser field ionization. Chemical Physics Letters 385 (5-6), S. 423 - 430 (2004)

Häger, J.; Fink, M.; Walther, H.: Scattering of NO from a graphite surface at cryogenic temperatures. Surface Science 550 (1-3), S. 35 - 45 (2004)

Chirila, C. C.; Joachain, C. J.; Kylstra, N. J.; Potvliege, R. M.: Three-step processes with relativistic ions. Laser Physics 14 (2), S. 190 - 193 (2004)

Fürbach, A.; Peng, X.; Turi, L.; Krausz, F.: Compact high-energy picosecond laser for micromachining applications. Applied Physics B 78 (3-4), S. 261 - 264 (2004)

Lange, W.; Gerard, J. M.: Focus section on cavity QED. Journal of Optics B-Quantum and Semiclassical Optics 6 (2), S. 117 - 118 (2004)

Lougovski, P.; Casagrande, F.; Lulli, A.; Englert, B.-G.; Solano, E.; Walther, H.: Solvable model of a strongly driven micromaser. Physical Review A 69 (2), 023812 (2004)

Zimmermann, M.; Gohle, C.; Holzwarth, R.; Udem, T.; Hänsch, T. W.: Optical clockwork with an offset-free difference-frequency comb: accuracy of sum- and difference-frequency generation. Optics Letters 29 (3), S. 310 - 312 (2004)

Trojek, P.; Schmid, C.; Bourennane, M.; Weinfurter, H.; Kurtsiefer, C.: Compact source of polarization-entangled photon pairs. Optics Express 12 (2), S. 276 - 281 (2004)

Kolachevsky, N.; Fischer, M.; Karshenboim, S. G.; Hänsch, T. W.: High-precision optical measurement of the 2S hyperfine interval in atomic hydrogen. Physical Review Letters 92 (3), 033003 (2004)

Schmidt, T.; Figl, C.; Grimpe, A.; Grosser, J.; Hoffmann, O.; Rebentrost, F.: Control of atomic collisions by laser polarization. Physical Review Letters 92 (3), 033201 (2004)