Sinatra A
Laboratoire Kastler Brossel, ENS, 24 Rue Lhomond, 75231 Paris Cedex 05, France.
Phys Rev Lett. 2006 Dec 22;97(25):253601. doi: 10.1103/PhysRevLett.97.253601. Epub 2006 Dec 19.
We show that three-level atoms excited by two cavity modes in a Lambda configuration close to electromagnetically induced transparency can produce strongly squeezed bright beams or correlated beams which can be used for quantum nondemolition measurements. The input intensity is the experimental "knob" for tuning the system into a squeezer or a quantum nondemolition device. The quantum correlations become ideal at a critical point characterized by the appearance of a switching behavior in the mean fields intensities. Our predictions, based on a realistic fully quantum three-level model including cavity losses and spontaneous emission, allow direct comparison with future experiments.
我们表明，在接近电磁诱导透明的拉姆达配置中，由两个腔模激发的三能级原子可以产生强压缩亮光束或关联光束，这些光束可用于量子非破坏测量。输入强度是将系统调谐为压缩器或量子非破坏装置的实验“旋钮”。量子关联在一个临界点变得理想，该临界点的特征是平均场强度出现开关行为。我们基于包含腔损耗和自发辐射的现实全量子三能级模型的预测，允许与未来的实验进行直接比较。
