Relativistic quantum metrology: exploiting relativity to improve quantum measurement technologies.

Relativistic quantum metrology: exploiting relativity to improve quantum measurement technologies.
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DOI:
10.1038/srep04996
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发表时间:
2014-05-22
期刊:
影响因子:
4.6
通讯作者:
Fuentes I
Fuentes I
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ahmadi M;Bruschi DE;Sabín C;Adesso G;Fuentes I

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我们提出了一个相对论量子计量学的框架,这是有用的地球和空间为基础的技术。迄今为止,量子计量学已成功地应用于设计精密仪器,如时钟和传感器,这些仪器通过利用量子特性而优于经典设备。有先进的计划在太空中实施这些和其他量子技术,例如Space-QUEST和空间光学时钟项目旨在在相对论开始发挥作用的情况下实施量子通信和量子时钟。然而,典型的设置不考虑相对论对量子特性的影响。为了包括和利用这些影响,我们介绍了量子场论的计量学应用技术。量子场论适当地结合了量子理论和相对论,特别是在天基实验发生的情况下。这个框架允许对量子场论中出现的参数进行高精度估计,包括适当的时间和加速度。事实上,这些技术可以应用于开发新一代的相对论量子技术,用于重力仪,时钟和传感器。作为一个例子,我们提出了一个高精度的设备,在原则上提高了国家的最先进的量子加速度计,利用相对论效应。
We present a framework for relativistic quantum metrology that is useful for both Earth-based and space-based technologies. Quantum metrology has been so far successfully applied to design precision instruments such as clocks and sensors which outperform classical devices by exploiting quantum properties. There are advanced plans to implement these and other quantum technologies in space, for instance Space-QUEST and Space Optical Clock projects intend to implement quantum communications and quantum clocks at regimes where relativity starts to kick in. However, typical setups do not take into account the effects of relativity on quantum properties. To include and exploit these effects, we introduce techniques for the application of metrology to quantum field theory. Quantum field theory properly incorporates quantum theory and relativity, in particular, at regimes where space-based experiments take place. This framework allows for high precision estimation of parameters that appear in quantum field theory including proper times and accelerations. Indeed, the techniques can be applied to develop a novel generation of relativistic quantum technologies for gravimeters, clocks and sensors. As an example, we present a high precision device which in principle improves the state-of-the-art in quantum accelerometers by exploiting relativistic effects.
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