CPT Test with (anti)proton Magnetic Moments Based on Quantum Logic Cooling and Readout
CPT Test with (anti)proton Magnetic Moments Based on Quantum Logic Cooling and Readout
复制标题
基于量子逻辑冷却和读出的（反）质子磁矩 CPT 测试
DOI：
10.1142/9789814566438_0011
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
C. Ospelkaus
中科院分区：
文献类型：
--
作者：
M. Niemann;A.-G. Paschke;T. Dubielzig;S. Ulmer;C. Ospelkaus
德赫梅尔特和范戴克1987年对电子和正电子因子的著名测量仍然是轻子领域中最精确的因子比较，也是对可能的CPT破坏的灵敏测试。为了测试重子区的CPT对称性，质子和反质子之间的互补g因子比较是非常可取的。目前，基于德赫梅尔特连续斯特恩-格拉赫效应和双潘宁陷阱技术的实验进展很快。然而，它们的实现是极其困难的，因为对于重子来说，使用低温技术进行基态冷却几乎是不可能的，而且连续的斯特恩-格拉赫效应的尺度是粒子的质量和磁矩。这两个困难最终都会限制准确性。基于Heinzen和Wineland以及Winelandet等人提出的量子逻辑技术，我们讨论了实现与单(反)质子进行AG因子比较的另一种方法的实验前景。基本思想是通过与控制良好的原子离子相互作用来冷却、控制和测量单个(反)质子。
Dehmelt and VanDyck's famous 1987 measurement of the electron and positrong-factor is still the most preciseg-factor comparison in the lepton sector, and a sensitive test of possible CPT violation. A complementaryg-factor comparison between the proton and the antiproton is highly desirable to test CPT symmetry in the baryon sector. Current experiments, based on Dehmelt's continuous Stern-Gerlach effect and the double Penning-trap technique, are making rapid progress. They are, however, extremely difficult to carry out because ground state cooling using cryogenic techniques is virtually impossible for heavy baryons, and because the continous Stern-Gerlach effect scales as, wheremis the mass of the particle andits magnetic moment. Both difficulties will ultimately limit the accuracy. We discuss experimental prospects of realizing an alternative approach to ag-factor comparison with single (anti)protons, based on quantum logic techniques proposed by Heinzen and Wineland and by Winelandet al. The basic idea is to cool, control and measure single (anti)protons through interaction with a well-controlled atomic ion.