Holger Müller, University of California, Berkeley
Daniel Nagaj, Slovak Academy of Sciences
Simon Phoenix, Khalifa University
The birth of quantum key distribution (QKD) 2 decades ago was accompanied by headlines the world over that the age of perfect security had finally dawned. The media, not noted for its restraint, can be forgiven. But so, too, can the physicists who, by and large, spawned such claims. In the cut-throat world of research funding, quantum key distribution was a godsend. I played the game too.
Otfried Guehne, Universität Siegen
When systematic errors are ignored in an experiment, the subsequent analysis of its results becomes questionable. We develop tests to identify systematic errors in experiments where only a finite amount of data is recorded and apply these tests to tomographic data taken in an ion-trap experiment. We put particular emphasis on quantum state tomography and present two detection methods: the first employs linear inequalities while the second is based on the generalized likelihood ratio.
Mark Howard, National University of Ireland, Maynooth
Patryk Gumann, IQC
Nuclear magnetic resonance (NMR) signal of phosphorus donors ($^{31}$P) in a single crystal of silicon, concentration 6 x 10$^{15}$ cc$^{-1}$ has been measured. The obtained polarization is larger than the expected thermal equilibrium polarization within the time scale of the experiment. A 13 sec build up time a probable nonequilibrium Overhauser mechanism, driven by 1047 nm light irradiation. This polarization is reached a temperature of 4.2 K and a magnetic field of 9.4 T.
Stacey Jefferey, Institute for Quantum Computing (IQC)
Abstract to be announced.
Ken Brown, Georgia Technical Institute of Technology
Joint Institute for Quantum Computing (IQC) Chemistry Seminar
Dr. Umesh Vazirani, University of California, Berkeley
PLEASE NOTE THE NEW COLLOQUIUM TIME AND LOCATION IN QNC.
Is it possible to certify that the n-bit output of a physical random
number generator is "really random"? In the classical World this seems
impossible.