Experimental investigation of quantum entropic uncertainty relations for multiple measurements in pure diamond.
Experimental investigation of quantum entropic uncertainty relations for multiple measurements in pure diamond.
复制标题
纯金刚石多次测量的量子熵不确定性关系的实验研究
DOI：
10.1038/s41598-017-02424-6
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发表时间：
2017-05-31
影响因子：
4.6
通讯作者：
Pan XY
中科院分区：
文献类型：
--
作者：
Xing J;Zhang YR;Liu S;Chang YC;Yue JD;Fan H;Pan XY
量子力学的一个独特特征是海森堡测不准原理，该原理指出两个不相容测量的结果不能同时达到任意精度。在量子信息的信息论背景下，不确定性原理可以表述为二维系统中量子比特（qubit）的两个测量的熵不确定性关系。研究了高维多测量量子态的新的熵不确定关系，得到的不确定界比两个测量设置下的不确定界更紧，而不确定界不能由有或没有量子存储器的量子比特系统得到.在这里，我们报告的第一个室温实验测试的熵的不确定性关系与三个测量在一个自然的三维固态系统：在纯金刚石的氮空位中心。实验结果证实了熵不确定度关系的多次测量。我们的结果更精确地证明了量子力学的基本测不准原理。
One unique feature of quantum mechanics is the Heisenberg uncertainty principle, which states that the outcomes of two incompatible measurements cannot simultaneously achieve arbitrary precision. In an information-theoretic context of quantum information, the uncertainty principle can be formulated as entropic uncertainty relations with two measurements for a quantum bit (qubit) in two-dimensional system. New entropic uncertainty relations are studied for a higher-dimensional quantum state with multiple measurements, and the uncertainty bounds can be tighter than that expected from two measurements settings and cannot result from qubits system with or without a quantum memory. Here we report the first room-temperature experimental testing of the entropic uncertainty relations with three measurements in a natural three-dimensional solid-state system: the nitrogen-vacancy center in pure diamond. The experimental results confirm the entropic uncertainty relations for multiple measurements. Our result represents a more precise demonstrating of the fundamental uncertainty principle of quantum mechanics.