1.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of GdańskPL167 papers
- Gdańsk University of TechnologyPL99 papers
- Adam Mickiewicz University in PoznańPL34 papers
- Polish Academy of SciencesPL28 papers
- Center for Theoretical PhysicsPL27 papers
- Jagiellonian UniversityPL27 papers
- Institute of Photonic SciencesES25 papers
- Barcelona Institute of Science and TechnologyES13 papers
- University College LondonGB13 papers
- Institució Catalana de Recerca i Estudis AvançatsES12 papers
- University of WrocławPL11 papers
- University of WaterlooCA10 papers
22 papers · 2 filters
Random and free observables saturate the Tsirelson bound for CHSH inequality
Z. Yin, A. W. Harrow, M. Horodecki +2
Maximal violation of the CHSH-Bell inequality is usually said to be a feature of anticommuting observables. In this work we show that even random observables exhibit near-maximal v…
Quantum bounds on multiplayer linear games and device-independent witness of genuine tripartite entanglement
Gláucia Murta, Ravishankar Ramanathan, Natália Móller +1
Here we study multiplayer linear games, a natural generalization of XOR games to multiple outcomes. We generalize a recently proposed efficiently computable bound, in terms of the…
A sufficient set of experimentally implementable thermal operations
Chris Perry, Piotr Ćwikliński, Janet Anders +2
Recent work using tools from quantum information theory has shown that at the nanoscale where quantum effects become prevalent, there is not one thermodynamical second law but many…
Increased Certification of Semi-device Independent Random Numbers using Many Inputs and More Postprocessing
Piotr Mironowicz, Armin Tavakoli, Alley Hameedi +3
Quantum communication with systems of dimension larger than two provides advantages in information processing tasks. Examples include higher rates of key distribution and random nu…
Photon distribution at the output of a beam splitter for imbalanced input states
Hiromichi Nakazato, Saverio Pascazio, Magdalena Stobińska +1
In the Hong--Ou--Mandel interferometric scheme, two identical photons that illuminate a balanced beam splitter always leave through the same exit port. Similar effects have been pr…
Towards resource theory of coherence in distributed scenarios
Alexander Streltsov, Swapan Rana, Manabendra Nath Bera +1
The search for a simple description of fundamental physical processes is an important part of quantum theory. One example for such an abstraction can be found in the distance lab p…
Reformulating noncontextuality inequalities in an operational approach
Zhen-Peng Xu, Debashis Saha, Hong-Yi Su +2
A new theory-independent noncontextuality inequality is presented [Phys. Rev. Lett. 115, 110403 (2015)] based on Kochen-Specker (KS) set without imposing the assumption of determin…
Completely Device Independent Quantum Key Distribution
E. A. Aguilar, R. Ramanathan, J. Kofler +1
Quantum key distribution (QKD) is a provably secure way for two distant parties to establish a common secret key, which then can be used in a classical cryptographic scheme. Using…
Absolutely Maximally Entangled states, combinatorial designs and multi-unitary matrices
Dardo Goyeneche, Daniel Alsina, José I. Latorre +2
Absolutely Maximally Entangled (AME) states are those multipartite quantum states that carry absolute maximum entanglement in all possible partitions. AME states are known to play…
Mutually unbiased bases with free parameters
Dardo Goyeneche, Santiago Gomez
We present a systematic method to introduce free parameters in sets of mutually unbiased bases. In particular, we demonstrate that any set of m real mutually unbiased bases in dime…
Steering is an essential feature of non-locality in quantum theory
Ravishankar Ramanathan, Dardo Goyeneche, Sadiq Muhammad +4
A physical theory is called non-local when observers can produce instantaneous effects over distant systems. Non-local theories rely on two fundamental effects: local uncertainty r…
Axiomatic approach to contextuality and nonlocality
Karol Horodecki, Andrzej Grudka, Pankaj Joshi +2
We present a unified axiomatic approach to contextuality and non-locality based on the fact that both are resource theories. In those theories the main objects are consistent boxes…
Creation of superposition of unknown quantum states
Michał Oszmaniec, Andrzej Grudka, Michał Horodecki +1
The superposition principle is one of the landmarks of quantum mechanics. The importance of quantum superpositions provokes questions about the limitations that quantum mechanics i…
Randomness amplification against no-signaling adversaries using two devices
Ravishankar Ramanathan, Fernando G. S. L. Brandão, Karol Horodecki +3
Recently, a physically realistic protocol amplifying the randomness of Santha-Vazirani sources producing cryptographically secure random bits was proposed; however for reasons of p…
Symmetric extendibility of quantum states
Marcin L. Nowakowski
Studies on symmetric extendibility of quantum states become especially important in a context of analysis of one-way quantum measures of entanglement, distilabillity and security o…
Using non-positive maps to characterize entanglement witnesses
Marek Mozrzymas, Adam Rutkowski, Michał Studziński
In this paper we present a new method for entanglement witnesses construction. We show that to construct such an object we can deal with maps which are not positive on the whole do…
Objectivisation In Simplified Quantum Brownian Motion Models
J. Tuziemski, J. K. Korbicz
Birth of objective properties from subjective quantum world has been one of the key questions in the quantum-to-classical transition. Basing on recent results in the field, we stud…
Bound on Bell Inequalities by Fraction of Determinism and Reverse Triangle Inequality
P. Joshi, K. Horodecki, M. Horodecki +5
It is an established fact that entanglement is a resource. Sharing an entangled state leads to non-local correlations and to violations of Bell inequalities. Such non-local correla…
Generalized XOR games with outcomes and the task of non-local computation
Ravishankar Ramanathan, Remigiusz Augusiak, Gláucia Murta
A natural generalization of the binary XOR games to the class of XOR-d games with outcomes is studied. We propose an algebraic bound to the quantum value of these games and…
Quantum communication complexity advantage implies violation of a Bell inequality
Harry Buhrman, Lukasz Czekaj, Andrzej Grudka +5
We obtain a general connection between a quantum advantage in communication complexity and non-locality. We show that given any protocol offering a (sufficiently large) quantum adv…
Non-classicality of temporal correlations
Stephen Brierley, Adrian Kosowski, Marcin Markiewicz +2
The results of space-like separated measurements are independent of distant measurement settings, a property one might call two-way no-signalling. In contrast, time-like separated…
Dynamical Objectivity in Quantum Brownian Motion
J. Tuziemski, J. K. Korbicz
Classical objectivity as a property of quantum states---a view proposed to explain the observer-independent character of our world from quantum theory, is an important step in brid…