Search Results - "Paunković, Nikola"

Causal orders, quantum circuits and spacetime: distinguishing between definite and superposed causal orders by Paunković, Nikola, Vojinović, Marko

“…We study the notion of causal orders for the cases of (classical and quantum) circuits and spacetime events. We show that every circuit can be immersed into a…”
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Uhlmann Connection in Fermionic Systems Undergoing Phase Transitions by Mera, Bruno, Vlachou, Chrysoula, Paunković, Nikola, Vieira, Vítor R

“…We study the behavior of the Uhlmann connection in systems of fermions undergoing phase transitions. In particular, we analyze some of the paradigmatic cases…”
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Quantum key distribution with quantum walks by Vlachou, Chrysoula, Krawec, Walter, Mateus, Paulo, Paunković, Nikola, Souto, André

“…Quantum key distribution is one of the most fundamental cryptographic protocols. Quantum walks are important primitives for computing. In this paper, we take…”
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Operational interpretation of the vacuum and process matrices for identical particles by Faleiro, Ricardo, Paunkovic, Nikola, Vojinovic, Marko

“…This work overviews the single-particle two-way communication protocol recently introduced by del Santo and Dakić (dSD), and analyses it using the process…”
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Equivalence Principle in Classical and Quantum Gravity by Paunkovic, Nikola, Vojinovic, Marko

“…We give a general overview of various flavours of the equivalence principle in classical and quantum physics, with special emphasis on the so-called weak…”
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Quantum Contract Signing with Entangled Pairs by Yadav, Preeti, Mateus, Paulo, Paunković, Nikola, Souto, André

“…We present a quantum scheme for signing contracts between two clients (Alice and Bob) using entangled states and the services of a third trusted party (Trent)…”
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Quantum Kolmogorov complexity and quantum correlations in deterministic-control quantum Turing machines by Lemus, Mariano, Faleiro, Ricardo, Mateus, Paulo, Paunković, Nikola, Souto, André

“…This work presents a study of Kolmogorov complexity for general quantum states from the perspective of deterministic-control quantum Turing Machines (dcq-TM)…”
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Ground state overlap and quantum phase transitions by Zanardi, Paolo, Paunković, Nikola

“…We present a characterization of quantum phase transitions in terms of the the overlap function between two ground states obtained for two different values of…”
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Entanglement swapping via three-step quantum walk-like protocol by Li, Xiao-Man, Yang, Ming, Paunković, Nikola, Li, Da-Chuang, Cao, Zhuo-Liang

“…We present an entanglement swapping process for unknown nonmaximally entangled photonic states, where the standard Bell-state measurement is replaced by a…”
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Noise and measurement errors in a practical two-state quantum bit commitment protocol by Loura, Ricardo, Almeida, Álvaro J., André, Paulo S., Pinto, Armando N., Mateus, Paulo, Paunković, Nikola

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Creating photonic GHZ and W states via quantum walk by Ju, Le, Yang, Ming, Paunković, Nikola, Chu, Wen-Jing, Cao, Zhuo-Liang

“…We propose schemes for preparing W and GHZ photonic states entangled in polarization via quantum walks, where the trajectory exchanging of identical photons…”
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Ground state overlap and quantum phase transitions by Zanardi, Paolo, Paunković, Nikola

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Macroscopic distinguishability between quantum states defining different phases of matter: fidelity and the Uhlmann geometric phase by Paunković, Nikola, Rocha Vieira, Vitor

“…We study the fidelity approach to quantum phase transitions (QPTs) and apply it to general thermal phase transitions (PTs). We analyze two particular cases:…”
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Experimental Semi-quantum Key Distribution With Classical Users by Massa, Francesco, Yadav, Preeti, Moqanaki, Amir, Krawec, Walter O., Mateus, Paulo, Paunković, Nikola, Souto, André, Walther, Philip

“…Quantum key distribution, which allows two distant parties to share an unconditionally secure cryptographic key, promises to play an important role in the…”
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Information-Theoretical Criteria for Characterizing the Earliness of Time-Series Data by Lemus, Mariano, Beirão, João P, Paunković, Nikola, Carvalho, Alexandra M, Mateus, Paulo

“…Biomedical signals constitute time-series that sustain machine learning techniques to achieve classification. These signals are complex with measurements of…”
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Generation and Distribution of Quantum Oblivious Keys for Secure Multiparty Computation by Lemus, Mariano, Ramos, Mariana F., Yadav, Preeti, Silva, Nuno A., Muga, Nelson J., Souto, André, Paunković, Nikola, Mateus, Paulo, Pinto, Armando N.

“…The oblivious transfer primitive is sufficient to implement secure multiparty computation. However, secure multiparty computation based on public-key…”
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A Network Server for Distributing Quantum Random Numbers by Silva, Nuno A., Ferreira, Mauricio J., Carvalho, Andre, Souto, Andre, Paunkovic, Nikola, Mateus, Paulo, Teixeira, Antonio, Pinto, Armando N.

“…Quantum random number generators (QRNGs) based on homodyne detection have a potential to be a cost-effective solution to deploy random numbers at high-speed…”
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Quantum Kolmogorov complexity and quantum correlations in deterministic-control quantum Turing machines by Lemus, Mariano, Faleiro, Ricardo, Mateus, Paulo, Paunković, Nikola, Souto, André

“…Quantum 8, 1230 (2024) This work presents a study of Kolmogorov complexity for general quantum states from the perspective of deterministic-control quantum…”
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Interferometric geometry from symmetry-broken Uhlmann gauge group with applications to topological phase transitions by Silva, Hector, Mera, Bruno, Paunković, Nikola

“…Phys. Rev. B 103, 085127 (2021) We provide a natural generalization of a Riemannian structure, i.e., a metric, recently introduced by Sj\"{o}qvist for the…”
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Information geometry of quantum critical submanifolds: relevant, marginal and irrelevant operators by Mera, Bruno, Paunković, Nikola, Amin, Syed Tahir, Vieira, Vítor R

“…Phys. Rev. B 106, 155101 (2022) We analyze the thermodynamical limit of the quantum metric along critical submanifolds of theory space. Building upon various…”
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