搜索结果: 46-60 共查到“知识库 量子电子学”相关记录167条 . 查询时间(4.932 秒)
Entanglement-free Certification of Entangling Gates
Entanglement-free Certification Entangling Gates
2016/1/22
Not all quantum protocols require entanglement to outperform their classical alternatives. The nonclassical correlations that lead to a quantum advantage are conjectured to be captured by quantum disc...
Demon-like Algorithmic Quantum Cooling and Its Realization with Quantum Optics
Demon-like Algorithmic Quantum Cooling Quantum Optics
2016/1/22
Simulation of the low-temperature properties of many-body systems remains one of the major challenges in theoretical 1–3 and experimental 4–6 quantum information science. We present, and demonstrate e...
Quantum entanglement is an essential resource in quantum information processing,which needs to be verified in many tasks such as quantum cryptography and computation. Due to imperfect detection device...
Time Reversal and Charge Conjugation in an Embedding Quantum Simulator
Charge Conjugation Embedding Quantum Simulator
2016/1/22
A quantum simulator is an important device that may soon outperform current classical computations. A basic arithmetic operation, the complex conjugate, however, is considered to be impossible to be i...
Experimental Test of Quantum Jarzynski Equality with a Trapped Ion System
Quantum Jarzynski Equality Trapped Ion System
2016/1/22
TheJarzynskiequalityrelatesthefree-energydiferencebetweentwoequilibriumstatestotheworkdoneonasystemthrough far-from-equilibriumprocesses amilestonethatbuildsonthepioneeringworkofClausiusandKelvin.Alth...
Resonator-Assisted Quantum Bath Engineering of a Flux Qubit
Resonator-Assisted Quantum Bath Engineering Flux Qubit
2016/1/22
We demonstrate quantum bath engineering for preparation of any orbital state with the controllable phase factor of a superconducting flux qubit assisted by a microwave coplanar waveguide resonator. We...
Testing Nonclassicality and Non-Gaussianity in Phase Space
Nonclassicality Non-Gaussianity Phase Space
2016/1/22
We theoretically propose and experimentally demonstrate a nonclassicality test of a single-mode field in phase space, which has an analogy with the nonlocality test proposed by Banaszek and Wódkiewicz...
Quantized electromagnetic response of three-dimensional chiral topological insulators
Quantized electromagnetic response three-dimensional chiral topological insulators
2016/1/22
Protected by the chiral symmetry, three-dimensional chiral topological insulators are characterized by an integer-valued topological invariant. How this invariant could emerge in physical observables ...
The router is a key element for a network. We describe a scheme to realize genuine quantum routing of single-photon pulses based on cascading of conditional quantum gates in a Mach-Zehnder interferome...
Quantum Computation under Micromotion in a Planar Ion Crystal
Quantum Computation Micromotion Planar Ion Crystal
2016/1/22
We propose a scheme to realize scalable quantum computation in a planar ion crystal confined by a Paul trap. We show that the inevitable in-plane micromotion affects the gate design via three separate...
可变外场中非线性系统热输运理论与计算方法
非线性系统 热输运 非格林平衡函数 量子主方程
2016/8/15
可变外场对低维纳米非线性体系热输运的调控研究有利于新型热控制器件的设计。本论文比较分析了用于热输运理论研究的玻尔兹曼方法、格林-库伯方法、非平衡格林函数法和量子主方程的优势和局限性，发现非平衡格林函数方法可处理弱耦合体系在可变外场作用下非线性体系的热输运，4阶量子主方程可处理耦合系数在045以内的中等程度耦合体系。
相干位移操作辅助下的量子放大器研究
量子光场 量子位移操作 量子线性放大器
2016/12/27
本文针对位移操作辅助下的量子线性放大器进行了研究.量子线性放大器可以提高量子态传输的保真度,提高量子通信抗干扰、抗损耗能力.本文针对目前量子线性放大器放大增益和放大成功概率低的问题,提出了相干位移增强型量子线性放大器,给出了位移操作提升量子线性放大器的机制,推导出放大增益得以进一步提高所需的位移操作的阈值,并结合态空间向光子数空间转化定理,在0-1光子数空间和多光子空间中同时验证了放大增益对位移量...
一种小天体表面阴影区的鲁棒匹配算法
多角度尺度不变特征变换 视角变化
2015/5/15
鉴于软着陆小天体过程中自主光学导航的状态估计问题，提出了一种针对小天体表面阴影区的提取与鲁棒匹配算法。首先，提取出阴影区中相对稳定的区域；然后，对提取出的阴影区域进行仿射归一化；最后，对仿射归一化后的阴影区域用多角度尺度不变特征变换（Multiple Angles Sift，MASIFT）描述子进行特征提取，并进行匹配与错匹配去除。在试验中，本文算法与SIFT算法进行了对比，结果表明，当图像间出...
中国电动汽车产业发展若干问题的思考
电动汽车 中国
2015/1/4
目前电动汽车已成为汽车工业的发展方向之
一。我国的汽车工业比较落后，但发展速度较快，
大家认同的现状是“大而不强”。那么在这样的背
景下，电动汽车的发展在很多人看来，是我们汽车
工业跨越式发展难得的机遇。中国电动汽车该如
何发展，这是大家所关注的焦点。
今年，我国政府出台了两个对发展电动汽车
具有很强指导意义的规划，明确将纯电驱动作为
发展新能源汽车产业的重要驱动力，这对提升产
...