Results 101 to 110 of about 100,483 (275)
Physical Review ResearchWe utilize the theory of local amplitude transfer (LAT) to gain insights into quantum walks (QWs) and quantum annealing (QA) beyond the adiabatic theorem. By representing the eigenspace of the problem Hamiltonian as a hypercube graph, we demonstrate that
Sebastian Schulz +2 more
doaj +1 more source
Emergence of Classical Random Walk from Non-Hermitian Effects in Quantum Kicked Rotor
EntropyWe investigate the quantum random walk in momentum space of a spinor kicked rotor with a non-Hermitian kicking potential. We find that the variance in momentum distributions transitions from quadratic to linear growth over time for the non-Hermitian case.
Wenxuan Song +4 more
doaj +1 more source
QUANTUM WALKS ON SIERPINSKI GASKETS [PDF]
International Journal of Quantum Information, 2013 We analyze discrete-time quantum walks on Sierpinski gaskets using a flip-flop shift operator with the Grover coin. We obtain the scaling of two important physical quantities: The mean-square displacement, and the mixing time as function of the number of points.
Lara, Pedro Carlos S. +2 more
openaire +3 more sources
Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions
Advanced Functional Materials, EarlyView.Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan +8 more
wiley +1 more source
Generic quantum walk using a coin-embedded shift operator
, 2008 The study of quantum walk processes has been widely divided into two standard variants, the discrete-time quantum walk (DTQW) and the continuous-time quantum walk (CTQW).
A. Ambainis +6 more
core +1 more source
Quantum Walks with Encrypted Data [PDF]
Physical Review Letters, 2012 4 pages, 2 ...
Rohde, P.P. +2 more
openaire +3 more sources
Imaging of Biphoton States: Fundamentals and Applications
Advanced Functional Materials, EarlyView.Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley +1 more source
Robust Quantum Walk Search on Complete Multipartite Graph With Multiple Marked Vertices
IEEE Transactions on Quantum EngineeringQuantum walks are a potent technique for building quantum algorithms. This article examines the quantum walk search algorithm on complete multipartite graphs with multiple marked vertices, which has not been explored before.
Ningxiang Chen, Meng Li, Xiaoming Sun
doaj +1 more source
Exponential algorithmic speedup by quantum walk
, 2002 We construct an oracular (i.e., black box) problem that can be solved exponentially faster on a quantum computer than on a classical computer. The quantum algorithm is based on a continuous time quantum walk, and thus employs a different technique from ...
Childs, Andrew M. +5 more
core +1 more source
2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics
Advanced Functional Materials, EarlyView.2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit +5 more
wiley +1 more source