2008
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                            C. Schmid; N. Kiesel; W. Wieczorek; H. Weinfurter; F. Mintert; A. Buchleitner
                    
                    
                    
 Experimental Direct Observation of Mixed State Entanglement
 Phys. Rev. Lett. 101, 260505 (2008)
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                            W. Rosenfeld; F. Hocke; F. Henkel; M. Krug; J. Volz; M. Weber; H. Weinfurter
                    
                    
                    
 Towards Long-Distance Atom-Photon Entanglement
 Phys. Rev. Lett. 101, 260403 (2008)
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                            W. Wieczorek; C. Schmid; N. Kiesel; R. Pohlner; O. Gühne; H. Weinfurter
                    
                    
                    
 Experimental Observation of an Entire Family of Four-Photon Entangled States
 Phys. Rev. Lett. 101, 010503 (2008)
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                            P. Trojek; H. Weinfurter
                    
                    
                    
 Collinear source of polarization-entangled photon pairs at nondegenerate wavelengths
 Appl. Phys. Lett. 92, 211103 (2008)
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                            C. Schmid; N. Kiesel; W. Laskowski; W. Wieczorek; M. Zukowski; H. Weinfurter
                    
                    
                    
 Discriminating Multipartite Entangled States
 Phys. Rev. Lett. 100, 200407 (2008)
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                            S. Gaertner; M. Bourennane; C. Kurtsiefer; A. Cabello; H. Weinfurter
                    
                    
                    
 Experimental Demonstration of a Quantum Protocol for Byzantine Agreement and Liar Detection
 Phys. Rev. Lett. 100, 070504 (2008)
 
 