Bruun G M, Andersen Brian M, Demler Eugene, Sørensen Anders S
Dipartimento di Fisica, Università di Trento and CNR-INFM BEC Center, I-38050 Povo, Trento, Italy.
Phys Rev Lett. 2009 Jan 23;102(3):030401. doi: 10.1103/PhysRevLett.102.030401. Epub 2009 Jan 20.
Spin noise spectroscopy with a single laser beam is demonstrated theoretically to provide a direct probe of the spatial correlations of cold fermionic gases. We show how the generic many-body phenomena of antibunching, pairing, antiferromagnetic, and algebraic spin liquid correlations can be revealed by measuring the spin noise as a function of laser width, temperature, and frequency.
理论上证明，单激光束自旋噪声光谱能够直接探测冷费米气体的空间相关性。我们展示了如何通过测量作为激光宽度、温度和频率函数的自旋噪声，来揭示反聚束、配对、反铁磁和代数自旋液体相关性等一般多体现象。
