Results 71 to 80 of about 1,909 (256)
Advanced Functional Materials, EarlyView.This study demonstrates that memristors can replace conventional 2T–1C driving circuits with simplified 1T–1 m architectures by exploiting resistance switching. With ultra‐low switching voltages (< ±0.2 V) and multi‐level resistance states, the memristors precisely control the current injected into organic light‐emitting diodes (OLEDs).
Dong Hyun Kim +6 more
wiley +1 more source
Accelerated first detection in discrete-time quantum walks using sharp restarts
Physical Review ResearchRestart is a common strategy observed in nature that accelerates first-passage processes, and has been extensively studied using classical random walks.
Kunal Shukla +2 more
doaj +1 more source
A Stable Hash Function Based on Parity-Dependent Quantum Walks With Memory (August 2023)
IEEE Transactions on Quantum EngineeringIn this article, we develop a generic controlled alternate quantum walk model by combining parity-dependent quantum walks with distinct arbitrary memory lengths and propose a hash function (called QHFM-P) based on this model.
Qing Zhou +3 more
doaj +1 more source
Quantum state revivals in quantum walks on cycles
Results in Physics, 2014 Recurrence in the classical random walk is well known and described by the Pólya number. For quantum walks, recurrence is similarly understood in terms of the probability of a localized quantum walker to return to its origin.
Phillip R. Dukes
doaj +1 more source
QUANTUM WALKS ON NECKLACES AND MIXING [PDF]
International Journal of Quantum Information, 2012 We analyze continuous-time quantum walks on necklace graphs — cyclical graphs consisting of many copies of a smaller graph (pearl). Using a Bloch-type ansatz for the eigenfunctions, we block-diagonalize the Hamiltonian, reducing the effective size of the problem to the size of a single pearl.
Kieferova M., Nagaj D.
openaire +3 more sources
Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers
Advanced Functional Materials, EarlyView.We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar +6 more
wiley +1 more source
Percolation induced effects in two-dimensional coined quantum walks: analytic asymptotic solutions
New Journal of Physics, 2014 Quantum walks on graphs can model physical processes and serve as efficient tools in quantum information theory. Once we admit random variations in the connectivity of the underlying graph, we arrive at the problem of percolation, where the long-time ...
B Kollár, J Novotný, T Kiss, I Jex
doaj +1 more source
Advanced Functional Materials, EarlyView.We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang +14 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Solution‐processed Cu(bdc) forms prototypical MOF thin films for which a multitude of not fully satisfactory structural models have been suggested. Combining rotating grazing‐incidence diffraction and X‐ray reflectivity on two complementary samples with density‐functional theory, we first discard the previously suggested models and then identify a non ...
Narges Taghizade +7 more
wiley +1 more source
Absorption probabilities of quantum walks [PDF]
Quantum Information Processing, 2018 Quantum walks are known to have nontrivial interaction with absorbing boundaries. In particular, Ambainis et.\ al.\ \cite{ambainis01} showed that in the $(\Z ,C_1,H)$ quantum walk (one-dimensional Hadamard walk) an absorbing boundary partially reflects information.
Parker Kuklinski, Mark A. Kon
openaire +3 more sources