Search Results - "Horodecki, Karol"

Universal Limitations on Quantum Key Distribution over a Network by Das, Siddhartha, Bäuml, Stefan, Winczewski, Marek, Horodecki, Karol

“…We consider the distribution of secret keys, both in a bipartite and a multipartite (conference) setting, via a quantum network and establish a framework to…”
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Semi-device-independent quantum money by Horodecki, Karol, Stankiewicz, Maciej

“…The seminal idea of quantum money, not forgeable due to laws of Quantum Mechanics, proposed by Stephen Wiesner, has laid the foundations for the Quantum…”
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Axiomatic approach to contextuality and nonlocality by Horodecki, Karol, Grudka, Andrzej, Joshi, Pankaj, Kłobus, Waldemar, Łodyga, Justyna

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The rank of contextuality by Horodecki, Karol, Zhou, Jingfang, Stankiewicz, Maciej, Salazar, Roberto, Horodecki, Paweł, Raussendorf, Robert, Horodecki, Ryszard, Ramanathan, Ravishankar, Tyhurst, Emily

“…Quantum contextuality is one of the most recognized resources in quantum communication and computing scenarios. We provide a new quantifier of this resource,…”
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Realistic noise-tolerant randomness amplification using finite number of devices by Brandão, Fernando G. S. L., Ramanathan, Ravishankar, Grudka, Andrzej, Horodecki, Karol, Horodecki, Michał, Horodecki, Paweł, Szarek, Tomasz, Wojewódka, Hanna

“…Randomness is a fundamental concept, with implications from security of modern data systems, to fundamental laws of nature and even the philosophy of science…”
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Private Weakly-Random Sequences from Human Heart Rate for Quantum Amplification by Stankiewicz, Maciej, Horodecki, Karol, Sakarya, Omer, Makowiec, Danuta

“…We investigate whether the heart rate can be treated as a semi-random source with the aim of amplification by quantum devices. We use a semi-random source…”
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Hybrid quantum network design against unauthorized secret-key generation, and its memory cost by Sakarya, Omer, Winczewski, Marek, Rutkowski, Adam, Horodecki, Karol

“…A significant number of servers that constitute the Internet are to provide private data via private communication channels to mutually anonymous registered…”
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Optimal measurement structures for contextuality applications by Liu, Yuan, Ramanathan, Ravishankar, Horodecki, Karol, Rosicka, Monika, Horodecki, Paweł

“…The Kochen-Specker (KS) theorem is a cornerstone result in the foundations of quantum mechanics describing the fundamental difference between quantum theory…”
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Squashed Entanglement for Multipartite States and Entanglement Measures Based on the Mixed Convex Roof by Dong Yang, Horodecki, K., Horodecki, M., Horodecki, P., Oppenheim, J., Wei Song

“…New measures of multipartite entanglement are constructed based on two definitions of multipartite information and different methods of optimizing over…”
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Gadget structures in proofs of the Kochen-Specker theorem by Ramanathan, Ravishankar, Rosicka, Monika, Horodecki, Karol, Pironio, Stefano, Horodecki, Michał, Horodecki, Paweł

“…The Kochen-Specker theorem is a fundamental result in quantum foundations that has spawned massive interest since its inception. We show that within every…”
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Complete extension: the non-signaling analog of quantum purification by Winczewski, Marek, Das, Tamoghna, Selby, John H., Horodecki, Karol, Horodecki, Paweł, Pankowski, Łukasz, Piani, Marco, Ramanathan, Ravishankar

“…Deriving quantum mechanics from information-theoretic postulates is a recent research direction taken, in part, with the view of finding a beyond-quantum…”
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On Distinguishing of Non-Signaling Boxes via Completely Locality Preserving Operations by Horodecki, Karol

“…We introduce a scenario of discrimination between bipartite boxes and apply it to boxes with two binary inputs and two binary outputs (2 × 2). We develop the…”
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Upper Bounds on Device-Independent Quantum Key Distribution by Christandl, Matthias, Ferrara, Roberto, Horodecki, Karol

“…Quantum key distribution (QKD) is a method that distributes a secret key to a sender and a receiver by the transmission of quantum particles (e.g., photons)…”
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Distributed Private Randomness Distillation by Yang, Dong, Horodecki, Karol, Winter, Andreas

“…We develop the resource theory of private randomness extraction in the distributed and device-dependent scenario. We begin by introducing the notion of…”
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Quantum entanglement by Horodecki, Ryszard, Horodecki, Paweł, Horodecki, Michał, Horodecki, Karol

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Limitations on quantum key repeaters by Bäuml, Stefan, Christandl, Matthias, Horodecki, Karol, Winter, Andreas

“…A major application of quantum communication is the distribution of entangled particles for use in quantum key distribution. Owing to noise in the…”
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Secure key from bound entanglement by HORODECKI, Karol, HORODECKI, Michał, HORODECKI, Paweł, OPPENHEIM, Jonathan

“…We characterize the set of shared quantum states which contain a cryptographically private key. This allows us to recast the theory of privacy as a paradigm…”
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Randomness Amplification under Minimal Fundamental Assumptions on the Devices by Ramanathan, Ravishankar, Brandão, Fernando G S L, Horodecki, Karol, Horodecki, Michał, Horodecki, Paweł, Wojewódka, Hanna

“…Recently, the physically realistic protocol amplifying the randomness of Santha-Vazirani sources producing cryptographically secure random bits was proposed;…”
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General Paradigm for Distilling Classical Key From Quantum States by Horodecki, K., Horodecki, M., Horodecki, P., Oppenheim, J.

“…In this paper, we develop a formalism for distilling a classical key from a quantum state in a systematic way, expanding on our previous work on a secure key…”
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When are Popescu-Rohrlich boxes and random access codes equivalent? by Grudka, Andrzej, Horodecki, Karol, Horodecki, Michał, Kłobus, Waldemar, Pawłowski, Marcin

“…We study a problem of interconvertibility of two supraquantum resources: one is the so-called Popescu-Rohrlich (PR) box, which violates…”
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