Violation of a Leggett-Garg inequality with ideal non-invasive measurements.
Violation of a Leggett-Garg inequality with ideal non-invasive measurements.
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理想的非侵入性测量违反了 Leggett-Garg 不等式。
DOI：
10.1038/ncomms1614
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发表时间：
2012-01-03
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
量子叠加原理指出，一个实体可以同时存在于两种不同的状态，这与我们的“经典”直觉相反。如果没有这样的概念，是否有可能理解一个给定系统的行为？Leggett和Garg设计的测试可以排除这种可能性。最初用于宏观对象的测试已经在各种系统中实现。然而，到目前为止，还没有实验采用最稳健的测试所需的“理想阴性结果”测量。在这里，我们介绍了一个通用的协议，这些特殊的测量使用辅助系统，作为一个本地测量设备，但不需要完美的准备。我们报告了一个实验实现使用自旋轴承磷杂质在硅。结果表明，这类微观系统的非经典图像的必要性。我们的程序可以适用于任何规模的系统，无论是单独控制或空间合奏。量子力学预言，物体可以同时存在于两个态的叠加态中。Knee等人提出并通过实验证明了一种协议，该协议通过以非侵入性方式测试所谓的Leggett-Garg不等式来完全证实这一预测。
The quantum superposition principle states that an entity can exist in two different states simultaneously, counter to our 'classical' intuition. Is it possible to understand a given system's behaviour without such a concept? A test designed by Leggett and Garg can rule out this possibility. The test, originally intended for macroscopic objects, has been implemented in various systems. However to date no experiment has employed the 'ideal negative result' measurements that are required for the most robust test. Here we introduce a general protocol for these special measurements using an ancillary system, which acts as a local measuring device but which need not be perfectly prepared. We report an experimental realization using spin-bearing phosphorus impurities in silicon. The results demonstrate the necessity of a non-classical picture for this class of microscopic system. Our procedure can be applied to systems of any size, whether individually controlled or in a spatial ensemble. Quantum mechanics predicts that objects can simultaneously exist in a superposition of two states. Knee et al. propose and demonstrate experimentally a protocol which fully confirms this prediction, by testing the so-called Leggett–Garg inequality in a non-invasive manner.
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影响因子：
8.6
作者：
Dressel, J.;Broadbent, C. J.;Jordan, A. N.
通讯作者：
Jordan, A. N.
影响因子：
8.6
作者：
LEGGETT, AJ;GARG, A
通讯作者：
GARG, A
影响因子：
8.6
作者：
Jordan, Andrew N.;Korotkov, Alexander N.;Buettiker, Markus
通讯作者：
Buettiker, Markus
DOI：
10.1002/pssa.200925148
发表时间：
2010-01-01
影响因子：
2
作者：
Becker, P.;Pohl, H. -J.;Abrosimov, N.
通讯作者：
Abrosimov, N.
影响因子：
19.6
作者：
Palacios-Laloy, Agustin;Mallet, Francois;Korotkov, Alexander N.
通讯作者：
Korotkov, Alexander N.