Requirements on quantum superpositions of macro-objects for sensing neutrinos
Requirements on quantum superpositions of macro-objects for sensing neutrinos
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DOI：
10.1103/physrevresearch.5.023012
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发表时间：
2022-04
影响因子：
4.2
通讯作者：
E. Kilian;M. Toroš;F. Deppisch;R. Saakyan;S. Bose
中科院分区：
文献类型：
--
作者：
E. Kilian;M. Toroš;F. Deppisch;R. Saakyan;S. Bose
我们研究了两个空间分离的局域态的量子叠加中的宏观系统，作为弱相互作用相对论粒子流的探测器。我们使用mev尺度的中微子通过中性电流中微子核散射从固体物体散射的明确例子来做到这一点。假设（反）中微子源是一个核裂变反应堆，我们利用估计的通量和相干弹性中微子-核截面来约束空间分离${\Delta}$x并描述传感系统的时间演化。特别地，我们发现在足够的冷却和背景抑制下，单个克尺度的质量被放置在间隔$10^{-14}$m的空间分量叠加中，量子叠加分量之间可以获得一个潜在的可测量的相对相位。
We examine a macroscopic system in a quantum superposition of two spatially separated localized states as a detector for a stream of weakly interacting relativistic particles. We do this using the explicit example of neutrinos with MeV-scale energy scattering from a solid object via neutral-current neutrino-nucleus scattering. Presuming the (anti-)neutrino source to be a nuclear fission reactor, we utilize the estimated flux and coherent elastic neutrino-nucleus cross section to constrain the spatial separation ${\Delta}$x and describe the temporal evolution of the sensing system. Particularly, we find that a potentially measurable relative phase between quantum superposed components is obtained for a single gram scale mass placed in a superposition of spatial components separated by $10^{-14}$m under sufficient cooling and background suppression.