He Y, He Y-M, Liu J, Wei Y-J, Ramírez H Y, Atatüre M, Schneider C, Kamp M, Höfling S, Lu C-Y, Pan J-W
Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
Phys Rev Lett. 2015 Mar 6;114(9):097402. doi: 10.1103/PhysRevLett.114.097402. Epub 2015 Mar 4.
We report the first experimental demonstration of the interference-induced spectral line elimination predicted by Zhu and Scully [Phys. Rev. Lett. 76, 388 (1996)] and Ficek and Rudolph [Phys. Rev. A 60, R4245 (1999)]. We drive an exciton transition of a self-assembled quantum dot in order to realize a two-level system exposed to a bichromatic laser field and observe the nearly complete elimination of the resonance fluorescence spectral line at the driving laser frequency. This is caused by quantum interference between coupled transitions among the doubly dressed excitonic states, without population trapping. We also demonstrate a multiphoton ac Stark effect with shifted subharmonic resonances and dynamical modifications of resonance fluorescence spectra by using double dressing.
我们报道了朱和斯卡利[《物理评论快报》76, 388 (1996)]以及菲塞克和鲁道夫[《物理评论A》60, R4245 (1999)]所预测的干涉诱导谱线消除的首次实验演示。我们驱动自组装量子点的激子跃迁，以实现一个处于双色激光场中的二能级系统，并观察到在驱动激光频率处共振荧光谱线几乎完全消除。这是由双重缀饰激子态之间耦合跃迁的量子干涉引起的，不存在布居俘获。我们还通过使用双重缀饰展示了具有移位次谐波共振的多光子交流斯塔克效应以及共振荧光光谱的动态修改。
