Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany.
Phys Rev Lett. 2013 May 31;110(22):223003. doi: 10.1103/PhysRevLett.110.223003. Epub 2013 May 30.
A single neutral atom is trapped in a three-dimensional optical lattice at the center of a high-finesse optical resonator. Using fluorescence imaging and a shiftable standing-wave trap, the atom is deterministically loaded into the maximum of the intracavity field where the atom-cavity coupling is strong. After 5 ms of Raman sideband cooling, the three-dimensional motional ground state is populated with a probability of (89±2)%. Our system is the first to simultaneously achieve quantum control over all degrees of freedom of a single atom: its position and momentum, its internal state, and its coupling to light.
单个中性原子被困在高精细度光腔中心的三维光学晶格中。使用荧光成像和可移动的驻波陷阱，原子被确定性地加载到腔内场的最大值处，在该处原子-腔耦合很强。经过 5 毫秒的喇曼边带冷却，三维运动基态的填充概率为（89±2）%。我们的系统首次实现了对单个原子所有自由度的量子控制：其位置和动量、内部状态以及与光的耦合。
