论文标题
用单色$ 2^3 s $ potronium beam进行惯性感测
Toward inertial sensing with a monochromatic $ 2^3 S $ positronium beam
论文作者
论文摘要
在这项工作中，我们讨论了在$ 2^3 s $亚稳态状态下惯性感测的可能性，以测量纯净性偶然物质 - 抗逆性物质系统上的光学偶极子，相对论和引力力。从可用$ 2^3 S $ beam的特征开始，我们估计测量加速度的必要时间从$ \ sim10^5 $ $ $ m/s^2 $到9.1 $ m/s^2 $，以及两种不同的惯性敏感设备：经典的MoiréDeflectomedeflectormenter和A Mach-Zhehnder-Zhannder干涉仪。据估计，在相同的测量时间内，据估计，Mach-Zehnder干涉仪的敏感性比Moiré偏转计的敏感性好几十倍。其中，最有前途的是通过2D激光多普勒冷却和连贯的正电子拉曼激发从基态降低到$ 2^3 s $级别。如果实施，这些改进有望导致测量加速度为9.1 $ m/s^2 $几周的加速度和几个小时的100 $ m/s^2 $所需的时间。还讨论了在$ 2^3 s $ potronium横穿偏差计/干涉仪上生成的条纹模式移位的不同检测方案。
In this work, we discuss the possibility of inertial sensing with positronium in the $2^3 S$ metastable state for the measurement of optical dipole, relativistic and gravitational forces on a purely leptonic matter-antimatter system. Starting from the characteristics of an available $2^3 S$ beam, we estimate the time necessary to measure accelerations ranging from $\sim10^5$ $m/s^2$ to 9.1 $m/s^2$ with two different inertial sensitive devices: a classical moiré deflectometer and a Mach-Zehnder interferometer. The sensitivity of the Mach-Zehnder interferometer has been estimated to be several tens of times better than that of the moiré deflectometer, for the same measurement time.\\ Different strategies to strengthen the $2^3 S$ beam flux and to improve the sensitivity of the devices are proposed and analyzed. Among them, the most promising are reducing the divergence of the positronium beam through 2D laser Doppler cooling and coherent positronium Raman excitation from the ground state to the $2^3 S$ level. If implemented, these improvements promise to result in the time required to measure an acceleration of 9.1 $m/s^2$ of few weeks and 100 $m/s^2$ of a few hours. Different detection schemes for resolving the fringe pattern shift generated on $2^3 S$ positronium crossing the deflectometer/interferometer are also discussed.
