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- University of GdańskPL161 papers
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11 papers · 1 filter
Superconductivity in Mg10Ir19B16
T. Klimczuk, Q. Xu, E. Morosan +2
Mg10Ir19B16, a previously unreported compound in the Mg-Ir-B chemical system, is found to be superconducting at temperatures near 5 K. The fact that the compound exhibits a range o…
Unifying classical and quantum key distillation
Matthias Christandl, Artur Ekert, Michal Horodecki +3
Assume that two distant parties, Alice and Bob, as well as an adversary, Eve, have access to (quantum) systems prepared jointly according to a tripartite state. In addition, Alice…
Quantum key distribution based on private states: unconditional security over untrusted channels with zero quantum capacity
Karol Horodecki, Michal Horodecki, Pawel Horodecki +2
We prove unconditional security for a quantum key distribution (QKD) protocol based on distilling pbits (twisted ebits) [quant-ph/0309110] from an arbitrary untrusted state that is…
Superconductivity in Cu_xTiSe_2
E. Morosan, H. W. Zandbergen, B. S. Dennis +6
Charge density waves (CDWs) are periodic modulations of the conduction electron density in solids. They are collective states that arise from intrinsic instabilities often present…
Multiple scattering and electron-uracil collisions at low energies
Sergey Yalunin, Sergey B. Leble
Links between two well known methods: methods of zero-range and non-overlapped (muffin-tin) potentials are discussed. Some difficulties of the method of zero-range potentials and i…
Universal observable detecting all two-qubit entanglement and determinant based separability tests
Remigiusz Augusiak, Maciej Demianowicz, Pawel Horodecki
We construct a single observable measurement of which mean value on four copies of an {\it unknown} two-qubit state is sufficient for unambiguous decision whether the state is sepa…