What limits limits?
What limits limits?
复制标题
什么限制限制？
DOI：
10.1093/nsr/nwaa210
复制
发表时间：
2021-01
影响因子：
20.6
通讯作者：
Qiu CW
中科院分区：
文献类型：
--
作者：
Liu YC;Huang K;Xiao YF;Yang L;Qiu CW
有一些基本规则和原则设定了物理系统的限制。这引发了一个有趣的思考——我们能否在特定情况下突破限制？现实的系统只能提供有限的功能，因为其性能受到一些基本原理的物理限制。“突破极限”通常意味着系统的能力可以显着增强，这在高精度计量、成像和纳米光子学等许多研究领域引起了人们的兴趣。“突破极限”的说法通常可以分为三类。首先，突破的极限（如标准量子极限）只是技术极限，而不是基本物理原理所支配的根本极限（图1a）。其次，一些限制（例如光学聚焦和成像中的衍射限制）的打破是以牺牲系统的其他性能为代价的，如图1b所示。第三，大多数限制通常是在某些先决条件或假设的情况下得出的。一旦工作场景发生变化或超出前提条件，之前的限制就失效，从而可以被打破（见图1c）。如果不精确阐述超表面的极限，如海森堡极限、时间带宽极限、效率极限等，可能会导致一些误解。
There are fundamental rules and principles setting the limits of physical systems. It triggers an interesting thought—can we break the limits under specific circumstances? A realistic system can only provide limited functionalities because its performance is physically constrained by some fundamental principles.‘Breaking the limit’, which usually implies that the capability of a system could be enhanced significantly, is intriguing in many research areas such as high-precision metrology, imaging and nanophotonics.The claim of ‘breaking the limit’can be generally divided into three categories. Firstly, the broken limit (such as standard quantum limit) is just a technical limit, but not a fundamental limit governed by basic physical principles (Fig. 1 a). Secondly, some limits (eg diffraction limits in optical focusing and imaging) are broken at the cost of sacrificing other performances of a system, as depicted in Fig. 1 b. Thirdly, most limits are generally derived with some prerequisites or assumptions. Once the working scenarios are changed or go beyond the prerequisite condition, the previous limit becomes invalid so that it can be broken (see Fig. 1 c). It would lead to some misunderstandings if the limits, such as the Heisenberg limit, time-bandwidth limit and efficiency limit, of metasurfaces were not elaborated precisely.
登录
查看更多内容
影响因子：
10.4
作者：
Mann, Sander A.;Sounas, Dimitrios L.;Alu, Andrea
通讯作者：
Alu, Andrea
影响因子：
64.8
作者：
Napolitano, M.;Koschorreck, M.;Mitchell, M. W.
通讯作者：
Mitchell, M. W.
影响因子：
8.6
作者：
HOLLAND, MJ;BURNETT, K
通讯作者：
BURNETT, K
影响因子：
8.6
作者：
Monticone, Francesco;Estakhri, Nasim Mohammadi;Alu, Andrea
通讯作者：
Alu, Andrea
打破洛伦兹互易性，克服物理和工程中的时间带宽限制
影响因子：
56.9
作者：
Tsakmakidis, K. L.;Shen, L.;Boyd, R. W.
通讯作者：
Boyd, R. W.