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Fast and Coherent Transfer of Atomic Qubits in Optical Tweezers Using Fiber Array Architecture 认领 引用
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作者 Jia-Chao Wang Zai-Zheng Zhang +4 位作者 Xiao Li Guang-Wei Wang Xiao-Dong He Min Liu Peng Xu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第6期33-37,I0025-I0031,共5页
Programmable neutral-atom arrays offer a promising route toward scalable quantum computing,where coherent qubit transfer enables non-local connectivity and reduces resource overhead.However,transfer speed and motional... Programmable neutral-atom arrays offer a promising route toward scalable quantum computing,where coherent qubit transfer enables non-local connectivity and reduces resource overhead.However,transfer speed and motional heating remain key bottlenecks for fast and deep quantum circuits.Here,we employ a fiber array neutral-atom quantum computing architecture with site-resolved control of trap depths to realize smooth amplitude exchange between static and moving traps,thereby enabling fast and coherent qubit transfer with ultralow motional heating.With a 10-μs in situ transfer between static and moving traps,we obtain a per-cycle heating rate of 0.156(9)μK,sustain over 500 cycles with negligible atom loss,and achieve a quantum state fidelity of 0.99992(5)per cycle.For inter-site transfer between two separated static traps,the operation takes 120μs with 0.783(17)μK heating per transfer,and exhibits negligible atom loss for up to 100 repeated cycles with a fidelity of 0.9998(1)per transfer.Furthermore,through experimental studies of parallel transfer,we establish a model that elucidates the relationship between array inhomogeneity and the transfer heating rate.This fast,low-heating coherent transfer capability provides a practical route for improving both speed and fidelity in atom-shuttling based quantum computing. 展开更多
关键词 fiber array architecture motional heating quantum computing smooth amplitude exchange coherent qubit transfer atomic qubits optical tweezers coherent qubit trans
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Binary nickel–iron nitride nanoarrays as bifunctional electrocatalysts for overall water splitting 认领 引用 被引量：8
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作者 Ming Jiang Yingjie Li +2 位作者 Zhiyi Lu Xiaoming Sun Xue Duan 《Inorganic Chemistry Frontiers》 SCIE EI 2016年第5期630-634,共5页
Electrochemical water splitting provides a facile method for high-purity hydrogen production,but electro-catalysts with a stable bifunctional activity towards both oxygen and hydrogen evolution have been rarely develo... Electrochemical water splitting provides a facile method for high-purity hydrogen production,but electro-catalysts with a stable bifunctional activity towards both oxygen and hydrogen evolution have been rarely developed.Herein we report a Fe2Ni2N material with a vertically aligned nanoplate array architecture as a bifunctional catalyst for overall water splitting in an alkaline environment.This advanced catalyst affords small onset overpotentials and fast current density increase,resulting in an excellent water splitting performance(requiring 1.65 V for achieving 10 mA cm−2),superior to the combination of benchmark noble metal catalysts. 展开更多
关键词 electrochemical water splitting vertically aligned nanoplate array architecture bifunctional electrocatalysts bifunctional catalyst water splitting nickel iron nitride overall water splitting vertical nanoplate arrays
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