3.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Slovak Academy of SciencesSK625 papers
- Czech Academy of SciencesCZ82 papers
- Masaryk UniversityCZ80 papers
- Centre National de la Recherche ScientifiqueFR78 papers
- Joint Institute for Nuclear ResearchRU74 papers
- University of Pavol Jozef ŠafárikSK62 papers
- Institute of Chemistry of the Slovak Academy of SciencesSK60 papers
- Charles UniversityCZ54 papers
- Comenius University BratislavaSK46 papers
- RIKEN Center for Emergent Matter ScienceJP45 papers
- University of BaselCH43 papers
- Université Paris-SudFR38 papers
176 papers · 1 filter
The future of secure communications: device independence in quantum key distribution
Seyed Arash Ghoreishi, Giovanni Scala, Renato Renner +4
In the ever-evolving landscape of quantum cryptography, Device-independent Quantum Key Distribution (DI-QKD) stands out for its unique approach to ensuring security based not on th…
Experimental protocol for qubit-environment entanglement detection
Gabriele Bizzarri, Linda Sansoni, Eleonora Stefanutti +4
Decoherence is a manifestation of the coupling of a system with its environment. The resulting loss of information can hamper the functioning of quantum devices, hence the need of…
Certifying nonlocal properties of noisy quantum operations
Albert Rico, Moisés Bermejo Morán, Fereshte Shahbeigi +1
Certifying quantum properties from the probability distributions they induce is an important task for several purposes. While this framework has been largely explored and used for…
On the simulation of quantum multimeters
Andreas Bluhm, Leevi Leppäjärvi, Ion Nechita
In the quest for robust and universal quantum devices, the notion of simulation plays a crucial role, both from a theoretical and from an applied perspective. In this work, we go b…
Generating random Gaussian states
Leevi Leppäjärvi, Ion Nechita, Ritabrata Sengupta
We develop a method for the random sampling of (multimode) Gaussian states in terms of their covariance matrix, which we refer to as a random quantum covariance matrix (RQCM). We a…
Trade-off between Bagging and Boosting for quantum separability-entanglement classification
Sanuja D. Mohanty, Ram N. Patro, Pradyut K. Biswal +2
Certifying whether an arbitrary quantum system is entangled or not, is, in general, an NP-hard problem. Though various necessary and sufficient conditions have already been explore…
Encoding and decoding of information in general probabilistic theories
Teiko Heinosaari, Leevi Leppäjärvi, Martin Plávala
Encoding and decoding are the two key steps in information processing. In this work we study the encoding and decoding capabilities of operational theories in the context of inform…
Advantages of quantum communication revealed by the reexamination of hyperbit theory limitations
Giovanni Scala, Seyed Arash Ghoreishi, Marcin Pawłowski
Pawłowski and Winter's hyperbit theory, proposed in 2012, presented itself as an alternative to quantum theory, suggesting novel ways of redefining entanglement and classical commu…
Simple Information Processing Tasks with Unbounded Quantum Advantage
Teiko Heinosaari, Oskari Kerppo, Leevi Leppäjärvi +1
Communication scenarios between two parties can be implemented by first encoding messages into some states of a physical system which acts as the physical medium of the communicati…
Harnessing high-dimensional temporal entanglement using limited interferometric setups
Alexandra Bergmayr, Florian Kanitschar, Matej Pivoluska +1
High-dimensional entanglement has shown to have significant advantages in quantum communication. It is available in many degrees of freedom and in particular in the time-domain rou…
Gravitational quantum switch on a superposition of spherical shells
Natália S. Móller, Bruna Sahdo, Nelson Yokomizo
In the absence of a complete theory of quantum gravity, phenomenological models built upon minimal assumptions have been explored for the analysis of possible quantum effects in gr…
Quantum dynamical speedup for correlated initial states
Alireza Gholizadeh, Maryam Hadipour, Soroush Haseli +2
The maximal evolution speed of any quantum system can be expressed by the quantum speed limit time. In this paper, we consider a model in which the system has a correlation with th…
Quantum speed limit of Jaynes-Cummings model with detuning for arbitrary initial states
Yasin Shahri, Maryam Hadipour, Saeed Haddadi +2
The quantum speed limit (QSL) of the Jaynes-Cummings model with detuning for arbitrary initial states is investigated. We mainly focus on the influences of the detuning, width of L…
Distribution of genuine high-dimensional entanglement over 10.2 km of noisy metropolitan atmosphere
Lukas Bulla, Kristian Hjorth, Oskar Kohout +9
In a recent quantum key distribution experiment, high-dimensional protocols were used to show an improved noise resistance over a 10.2 km free-space channel. One of the unresolved…
Incompatibility of quantum instruments
Leevi Leppäjärvi, Michal Sedlák
Quantum instruments describe outcome probability as well as state change induced by measurement of a quantum system. Incompatibility of two instruments, i. e. the impossibility to…
Robustness of optimal probabilistic storage and retrieval of unitary channels to noise
Jaroslav Pavličko, Mário Ziman
We investigate robustness of probabilistic storage and retrieval device optimized for phase gates to noise. We use noisy input composed of convex combination of unitary channel wit…
Quantum key distribution rates from semidefinite programming
Mateus Araújo, Marcus Huber, Miguel Navascués +2
Computing the key rate in quantum key distribution (QKD) protocols is a long standing challenge. Analytical methods are limited to a handful of protocols with highly symmetric meas…
Noise-correlation spectrum for a pair of spin qubits in silicon
J. Yoneda, J. S. Rojas-Arias, P. Stano +5
Semiconductor qubits are appealing for building quantum processors as they may be densely integrated due to small footprint. However, a high density raises the issue of noise corre…
Quantum space, ground space traversal, and how to embed multi-prover interactive proofs into unentanglement
Sevag Gharibian, Dorian Rudolph
Savitch's theorem states that NPSPACE computations can be simulated in PSPACE. We initiate the study of a quantum analogue of NPSPACE, denoted Streaming-QCMASPACE (SQCMASPACE), whe…
Pauli component erasing quantum channels
Jose Alfredo de Leon, Alejandro Fonseca, Francois Leyvraz +2
Decoherence of quantum systems is described by quantum channels. However, a complete understanding of such channels, especially in the multi-particle setting, is still an ongoing d…
Non-local temporal interferometry for highly resilient free-space quantum communication
Lukas Bulla, Matej Pivoluska, Kristian Hjorth +9
Entanglement distribution via photons over long distances enables many applications, including quantum key distribution (QKD), which provides unprecedented privacy. The inevitable…
Quantum dynamics is not strictly bidivisible
David Davalos, Mario Ziman
We address the question of the existence of quantum channels that are divisible in two quantum channels but not in three or, more generally, channels divisible in but not in $n…
Mermin and Svetlichny inequalities for non-projective measurement observables
Mohd Asad Siddiqui, Sk Sazim
The necessary and sufficient criteria for violating the Mermin and Svetlichny inequalities by arbitrary three-qubit states are presented. Several attempts have been made, earlier,…
Isolating noise and amplifying signal with quantum Cheshire cat
Ahana Ghoshal, Soham Sau, Debmalya Das +1
The so-called quantum Cheshire cat is a phenomenon in which an object, identified with a "cat", is dissociated from a property of the object, identified with the "grin" of the cat.…