【摘 要】
：
When applying Grover’s algorithm to an unordered database,the probability of obtaining correct results usually decreases as the quantity of target increases.A
【机 构】
：
Henan Key Laboratory of Quantum Information and Cryptography, Zhengzhou 450001;Synergetic Innovation
论文部分内容阅读
When applying Grover’s algorithm to an unordered database,the probability of obtaining correct results usually decreases as the quantity of target increases.A four-phase improvement of Grover’s algorithm is proposed to fix the deficiency,and the unitary and the phase-matching condition are also proposed.With this improved scheme,when the proportion of target is over 1/3,the probability of obtaining correct results is greater than 97.82％with only one iteration using two phases.When the computational complexity is O((√)M/N),the algorithm can succeed with a probability no less than 99.63％.
其他文献
The neck linker (NL) docking to the motor domain is the key force generation process of a kinesin motor.In the initiation step of NL docking the first three res
材料与方法1990年,我们用鲁棉10号、豫棉5号、中棉14号和晋棉10号4个短季棉新品种,以陕2786为对照,在泾阳县布点3个,进行夏棉品种筛选。小麦收获后,统一于6月6日播种。10月2
芒果享有“热带水果之王”的美誉，与葡萄、柑橘、香蕉、苹果并称“世界五大水果”。商品化、规模化是我国南方地区芒果生产现如今的发展方向，但芒果的鉴定品种、选种育种及其遗
Quantum technology establishes a foundation for secure communication via quantum key distribution (QKD).In the last two decades,the rapid development of QKD mak
We propose that the hexagonal crystal form of MoC is a stable and new type of topological semimetal.It hosts an exotic Fermi surface consisting of two concentri
Titanium dioxide (TiO2) loaded tungsten trioxide (WO3) composite films are prepared by an E-beam vapor system.Associated with the existence of a heterojunction
We investigate how the driving field affects the bound states in the one-dimensional two-particle Bosc-Hubbard model with an impurity.In the high-frequency regi
Recently,a novel kind of quantum key distribution called the round-robin differential phase-shift (RRDPS)protocol was proposed,which bounds the amount of leakag
It is well known that conventional GaInP/GaInAs/Ge three-junction (3J) solar cells are difficult to continue to ascend when the efficiencies reach 32％ and 42％ und