搜索结果: 1-14 共查到“物理学 a quantum walk”相关记录14条 . 查询时间(0.109 秒)
Two-particle bosonic-fermionic quantum walk via 3D integrated photonics
Two-particle bosonic-fermionic quantum
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2011/9/29
Quantum walk represents one of the most promising resources for the simulation of physical quantum systems [1], and has also emerged as an alternative to the standard circuit model for quantum computi...
Spatial search using the discrete time quantum walk
Spatial search discrete time quantum walk
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2010/11/8
We study the quantum walk search algorithm of Shenvi, Kempe and Whaley [PRA 67 052307 (2003)] on data structures of one to two spatial dimensions, on which the algorithm is thought to be less efficie...
Limit distribution with a combination of density functions for a 2-state quantum walk
Limit distribution Time-inhomogeneous 2-state quantum walk
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2010/11/5
We consider 2-state time-inhomogeneous quantum walks defined by two matrices on the line. For the time-homogeneous walks determined by a unitary matrix, the limit distribution is expressed by a simple...
Quantum walk-based search and centrality
Quantum walk-based search centrality
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2010/10/29
We study the discrete-time quantum walk-based search for a marked vertex on a graph. By considering various structures in which not all vertices are equivalent, we investigate the relationship between...
Photon pairs take a quantum walk（图）
Photon pairs a quantum walk
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2010/9/21
A new optical chip that allows pairs of photons to take a quantum walk has been unveiled by an international team of physicists. The tiny device contains an array of 21 coupled optical waveguides and ...
Statistical dynamics of a non-Abelian anyonic quantum walk
Statistical dynamics non-Abelian anyonic quantum
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2010/10/18
We study the single particle dynamics of a mobile non-Abelian anyon hopping around many pinned anyons on a surface. The dynamics is modelled by a discrete time quantum walk and the spatial degree of f...
Limit Theorems for the Discrete-Time Quantum Walk on a Graph with Joined Half Lines
Theorems Discrete-Time Quantum Walk Graph Half Lines
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2010/10/18
We consider a discrete-time quantum walk Wt, at time t on a graph with joined half lines J, which is composed of half lines with the same origin. Our analysis is based on a reduction of the walk o...
Trapped ions go for a quantum walk（图）
Trapped ions a quantum walk quantum computing quantum effects
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2010/3/26
Physicists in Austria have demonstrated a "quantum walk" in detail for the first time, using trapped ions. Such experiments could allow us to better understand the transition between the quantum and c...
Spatial entanglement using quantum walk on many body system
Spatial entanglement quantum body system
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2010/4/7
Evolution of many particles on a one dimensional lattice subjected to quantum walk can cause spatial entanglement in the lattice position which can be exploited for quantum information/communication p...
Asymptotic entanglement in a two-dimensional quantum walk
Asymptotic entanglement a two-dimensional quantum walk
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2010/4/8
The evolution operator of a discrete-time quantum walk involves a conditional shift in position space which entangles the coin and position degrees of freedom of the walker. After several steps, the c...
Ultracold atom takes a quantum walk（图）
ultracold atom quantum walk
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2009/7/15
Single atoms have been spotted doing the quantum version of the random walk by physicists in Germany. This sighting of a “quantum walk” could help in the design of quantum search algorithms, or in the...
Absorption Probabilities for the Two-Barrier Quantum Walk
Absorption Probabilities Two-Barrier Quantum Walk
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2010/4/9
Let p_j^(n) be the probability that a Hadamard quantum walk, started at site j on the integer lattice {0,...,n}, is absorbed at 0. We give an explicit formula for p_j^(n). Our formula proves a conject...
Quantum Walk-based Generation of Entanglement Between Two Walkers
Quantum Walk-based Generation Entanglement Two Walkers
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2010/4/9
Quantum walks can be used either as tools for quantum algorithm development or as entanglement generators, potentially useful to test quantum hardware. We present a novel algorithm based on a discrete...
Faster transport with a directed quantum walk
Faster transport quantum walk
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2010/4/8
We give the first example of faster transport with a quantum walk on an inherently directed graph, on the directed line with a variable number of self-loops at each vertex. These self-loops can be tho...