3.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of GdańskPL161 papers
- National Quantum Information Centre in GdanskPL99 papers
- Princeton UniversityUS44 papers
- Polish Academy of SciencesPL40 papers
- Jagiellonian UniversityPL34 papers
- Los Alamos National LaboratoryUS25 papers
- AGH University of KrakowPL20 papers
- Adam Mickiewicz University in PoznańPL19 papers
- Center for Theoretical PhysicsPL19 papers
- Vrije Universiteit BrusselBE19 papers
- Centre National de la Recherche ScientifiqueFR17 papers
- RWTH Aachen UniversityDE17 papers
10 papers · 2 filters
Degree of entanglement as a physically ill-posed problem: The case of entanglement with vacuum
Marcin Pawlowski, Marek Czachor
We analyze an example of a photon in superposition of different modes, and ask what is the degree of their entanglement with vacuum. The problem turns out to be ill-posed since we…
Direct measurement of non-linear properties of bipartite quantum states
Fabio Antonio Bovino, Giuseppe Castagnoli, Artur Ekert +3
Non-linear properties of quantum states, such as entropy or entanglement, quantify important physical resources and are frequently used in quantum information science. They are usu…
Cavity-QED tests of representations of canonical commutation relations employed in field quantization
Marek Czachor, Marcin Wilczewski
Various aspects of dissipative and nondissipative decoherence of Rabi oscillations are discussed in the context of field quantization in alternative representations of CCR. Theory…
Low dimensional bound entanglement with one-way distillable cryptographic key
Karol Horodecki, Lukasz Pankowski, Michal Horodecki +1
We provide a class of bound entangled states that have positive distillable secure key rate. The smallest state of this kind is , which shows that peculiar security co…
General paradigm for distilling classical key from quantum states
Karol Horodecki, Michal Horodecki, Pawel Horodecki +1
We develop a formalism for distilling a classical key from a quantum state in a systematic way, expanding on our previous work on secure key from bound entanglement [K. Horodecki e…
Quantumness of ensemble from no-broadcasting principle
M. Horodecki, P. Horodecki, R. Horodecki +1
Quantum information, though not precisely defined, is a fundamental concept of quantum information theory which predicts many fascinating phenomena and provides new physical resour…
On quantum non-signalling boxes
M. Piani, M. Horodecki, P. Horodecki +1
A classical non-signalling (or causal) box is an operation on classical bipartite input with classical bipartite output such that no signal can be sent from a party to the other th…
Simple test for quantum channel capacity
Pawel Horodecki, Marcin L. Nowakowski
Basing on states and channels isomorphism we point out that semidefinite programming can be used as a quick test for nonzero one-way quantum channel capacity. This can be achieved…
Unconditional fidelity thresholds in single copy distillation and some aspects of quantum error correction
Pawel Horodecki, Maciej Demianowicz
Various aspects of distillation of noisy entanglement and some associated effects in quantum error correction are considered. In particular we prove that if only one--way classical…
Entangled-state cryptographic protocol that remains secure even if nonlocal hidden variables exist and can be measured with arbitrary precision
Diederik Aerts, Marek Czachor, Marcin Pawlowski
Standard quantum cryptographic protocols are not secure if one assumes that nonlocal hidden variables exist and can be measured with arbitrary precision. The security can be restor…