Salzburger Thomas, Ritsch Helmut
Institute for Theoretical Physics, University Innsbruck, A 6020, Austria.
Phys Rev Lett. 2004 Aug 6;93(6):063002. doi: 10.1103/PhysRevLett.93.063002. Epub 2004 Aug 5.
We study atomic center of mass motion and field dynamics of a single-atom laser consisting of a single incoherently pumped free atom moving in an optical high-Q resonator. For sufficient pumping, the system starts lasing whenever the atom is close to a field antinode. If the field mode eigenfrequency is larger than the atomic transition frequency, the generated laser light attracts the atom to the field antinode and cools its motion. Using quantum Monte Carlo wave function simulations, we investigate this coupled atom-field dynamics including photon recoil and cavity decay. In the regime of strong coupling, the generated field shows strong nonclassical features such as photon antibunching, and the atom is spatially confined and cooled to sub-Doppler temperatures.
我们研究了由一个在光学高Q谐振器中运动的非相干泵浦自由原子组成的单原子激光器的质心运动和场动力学。对于足够的泵浦，每当原子靠近场波腹时，系统就开始激光发射。如果场模本征频率大于原子跃迁频率，产生的激光会将原子吸引到场波腹并冷却其运动。我们使用量子蒙特卡罗波函数模拟来研究这种包括光子反冲和腔衰减的原子-场耦合动力学。在强耦合 regime下，产生的场表现出强烈的非经典特征，如光子反聚束，并且原子在空间上受到限制并冷却到亚多普勒温度。
