Jack Dodd Centre for Quantum Technology, Department of Physics, University of Otago, Dunedin, New Zealand.
Phys Rev Lett. 2011 Dec 30;107(27):270403. doi: 10.1103/PhysRevLett.107.270403. Epub 2011 Dec 29.
We present a theoretical treatment of coherent light scattering from an interacting 1D Bose gas at finite temperatures. We show how this can provide a nondestructive measurement of the atomic system states. The equilibrium states are determined by the temperature and interaction strength, and are characterized by the spatial density-density correlation function. We show how this correlation function is encoded in the angular distribution of the fluctuations of the scattered light intensity, thus providing a sensitive, quantitative probe of the density-density correlation function and therefore the quantum state of the gas.
我们提出了一种关于有限温度下一维玻色气体中相干光散射的理论处理方法。我们展示了如何通过这种方法对原子系统状态进行非破坏性测量。平衡状态由温度和相互作用强度决定，并由空间密度-密度相关函数来描述。我们展示了如何将这种相关函数编码在散射光强度波动的角分布中，从而提供了对密度-密度相关函数的敏感、定量探测，以及对气体量子态的探测。
