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
25 papers · 1 filter
Simulating long-distance entanglement in quantum spin chains by superconducting flux qubits
Stefano Zippilli, Miroslav Grajcar, Evgeni Il'ichev +1
We investigate the performance of superconducting flux qubits for the adiabatic quantum simulation of long distance entanglement (LDE), namely a finite ground-state entanglement be…
Process estimation in presence of time-invariant memory effects
Tomas Rybar, Mario Ziman
Any repeated use of a fixed experimental instrument is subject to memory effects. We design an estimation method uncovering the details of the underlying interaction between the sy…
Spin relaxation anisotropy in a GaAs quantum dot
P. Scarlino, E. Kawakami, P. Stano +4
We report that the electron spin relaxation time, T1, in a GaAs quantum dot with a spin-1/2 ground state has a 180 degree periodicity in the orientation of the in-plane magnetic fi…
Fast Long-Distance Control of Spin Qubits by Photon Assisted Cotunneling
Peter Stano, Jelena Klinovaja, Floris R. Braakman +2
We investigate theoretically the long-distance coupling and spin exchange in an array of quantum dot spin qubits in the presence of microwaves. We find that photon assisted cotunne…
Generation and Detection of Spin Currents in Semiconductor Nanostructures with Strong Spin-Orbit Interaction
Fabrizio Nichele, Szymon Hennel, Patrick Pietsch +5
Storing, transmitting, and manipulating information using the electron spin resides at the heart of spintronics. Fundamental for future spintronics applications is the ability to c…
Perturbative gadgets without strong interactions
Yudong Cao, Daniel Nagaj
Perturbative gadgets are used to construct a quantum Hamiltonian whose low-energy subspace approximates a given quantum -body Hamiltonian up to an absolute error . Typically,…
Optimal entanglement-assisted discrimination of quantum measurements
M. Mikova, M. Sedlak, I. Straka +5
We investigate optimal discrimination between two projective single-qubit measurements in a scenario where the measurement can be performed only once. We consider general setting i…
Optimal single shot strategies for discrimination of quantum measurements
Michal Sedlak, Mario Ziman
We study discrimination of m quantum measurements in the scenario when the unknown measurement with n outcomes can be used only once. We show that ancilla-assisted discrimination p…
NMR Response of Nuclear Spin Helix in Quantum Wires with Hyperfine and Spin-Orbit Interaction
Peter Stano, Daniel Loss
We calculate the nuclear magnetic resonance (NMR) response of a quantum wire where at low temperature a self-sustained electron-nuclear spin order is created. Our model includes th…
Helical nuclear spin order in a strip of stripes in the Quantum Hall regime
Tobias Meng, Peter Stano, Jelena Klinovaja +1
We investigate nuclear spin effects in a two-dimensional electron gas in the quantum Hall regime modeled by a weakly coupled array of interacting quantum wires. We show that the pr…
Shell galaxies as laboratories for testing MOND
Michal Bílek, Ivana Ebrová, Bruno Jungwiert +2
Tests of MOND in ellipticals are relatively rare because these galaxies often lack kinematic tracers in the regions where the MOND effects are significant. Stellar shells observed…
Exact ground states of a spin-1/2 Ising-Heisenberg model on the Shastry-Sutherland lattice in a magnetic field
Taras Verkholyak, Jozef Strecka, Frederic Mila +1
Exact ground states of a spin-1/2 Ising-Heisenberg model on the Shastry-Sutherland lattice with Heisenberg intra-dimer and Ising inter-dimer couplings are found by two independent…
Finite quasiparticle lifetime in disordered superconductors
M. Žemlička, P. Neilinger, M. Trgala +8
We investigate the complex conductivity of a highly disordered MoC superconducting film with , where is the Fermi wavenumber and is the mean free path, der…
Two Notes on Grover's Search: Programming and Discriminating
Daniel Reitzner, Mario Ziman
In this work we address two questions concerning Grover's algorithm. In the first we give an answer to the question how to employ Grover's algorithm for actual search over database…
Momentum switches
Andrew M. Childs, David Gosset, Daniel Nagaj +2
Certain continuous-time quantum walks can be viewed as scattering processes. These processes can perform quantum computations, but it is challenging to design graphs with desired s…
Quantum and classical correlations in the solid-state NMR free induction decay
V. E. Zobov, A. A. Lundin
The free-induction decay (FID) of the transverse magnetization in a dipolar-coupled rigid lattice is a fundamental problem in magnetic resonance and in the theory of many-body syst…
Entanglement sensitivity to signal attenuation and amplification
Sergey N. Filippov, Mario Ziman
We analyze general laws of continuous-variable entanglement dynamics during the deterministic attenuation and amplification of the physical signal carrying the entanglement. These…
On The Power Of Coherently Controlled Quantum Adiabatic Evolutions
Maria Kieferova, Nathan Wiebe
A major challenge facing adiabatic quantum computing is that algorithm design and error correction can be difficult for adiabatic quantum computing. Recent work has considered addr…
Quantum Monte Carlo study of one-dimensional transition metal organometallic cluster systems and their suitability as spin filters
L. Horváthová, R. Derian, L. Mitas +1
We present calculations of electronic and magnetic structures of vanadium-benzene multidecker clusters VBz ( = 1 - 3) using advanced quantum Monte Carlo methods. T…
Device-independent randomness extraction for arbitrarily weak min-entropy source
Jan Bouda, Marcin Pawlowski, Matej Pivoluska +1
Expansion and amplification of weak randomness plays a crucial role in many security protocols. Using quantum devices, such procedure is possible even without trusting the devices…
Mean-field universality class induced by weak hyperbolic curvatures
Andrej Gendiar, Michal Daniska, Roman Krcmar +1
Order-disorder phase transition of the ferromagnetic Ising model is investigated on a series of two-dimensional lattices that have negative Gaussian curvatures. Exceptional lattice…
Thermodynamic model of social influence on two-dimensional square lattice: Case for two features
Jozef Genzor, Vladimir Buzek, Andrej Gendiar
We propose a thermodynamic multi-state spin model in order to describe equilibrial behavior of a society. Our model is inspired by the Axelrod model used in social network studies.…
Quantum Monte Carlo for Noncovalent Interactions: An Efficient Protocol Attaining Benchmark Accuracy
Matúš Dubecký, René Derian, Petr Jurečka +3
Reliable theoretical predictions of noncovalent interaction energies, which are important e.g. in drug-design and hydrogen-storage applications, belong to longstanding challenges o…
Taking one charge off a two-dimensional Wigner crystal
Moritz Antlanger, Martial Mazars, Ladislav Šamaj +2
A planar array of identical charges at vanishing temperature forms a Wigner crystal with hexagonal symmetry. We take off one (reference) charge in a perpendicular direction, hold i…