P R O J E C T   Q I A M

Title: Quantum Information Aspects of Quantum Measurements
Duration: 02/2008 - 12/2010
Principal Investigator: Prof. RNDr. Vladimír Bužek, DrSc.

Project Goal: Quantum measurements are standing in between quantum theory and experimental reality. The intrinsic randomness of quantum measurements is probably the most intriguing feature of quantum world and it puzzled physisicits of all generations. Our goal will be to focus on and analyzed the properties of quantum measurements from the point of view of quantum information theory. The potential impact of this project is development of our understanding to quantum measurements, development of algorithms for description of these tasks and finally to gather some more intuitive picture of quantum phenomena. The project is divided into three workpackages: discrimination of quantum devices, quantum process estimations and encryption of quantum information.

Researchers: Vladimír Bužek, Mário Ziman, Martin Plesch, Daniel Nagaj, Michal Sedlák, Peter Rapčan, Daniel Reitzner,

  1. Michal Sedlák, Mário Ziman: Unambiguous comparison of unitary channels, Phys.Rev.A 79, 012303 (2009) [arXiv:0809.4401]
  2. Tomáš Rybár, Mário Ziman: Repeatable quantum memory channels, Phys. Rev. A 78, 052114 (2008) [arXiv:0808.3851]
  3. Mário Ziman : "Incomplete quantum process tomography and principle of maximal entropy." Phys.Rev.A 78, 032118 (2008) [arXiv:0802.3892]
  4. Mário Ziman : "Process POVM: A mathematical framework for the description of process tomography experiments." Phys.Rev.A 77, 062112 (2008) [arXiv:0802.3862]
  5. Mário Ziman, Teiko Heinosaari : "Discrimination of quantum observables using limited resources." Phys. Rev. A 77, 042321 (2008) [arXiv:0712.3675]
  6. Michal Sedlák, Mário Ziman, Vladimír Bužek and Mark Hillery: "Unambiguous comparison of ensembles of quantum states." Phys.Rev.A 77,042304 (2008) [arXiv:0712.1616]
  7. Daniel Nagaj, Pawel Wocjan: "Hamiltonian Quantum Cellular Automata in 1D" Phys. Rev. A 78, 032311 (2008) [arXiv:0802.0886]