COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, NL-5600MB Eindhoven, The Netherlands.
1] COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, NL-5600MB Eindhoven, The Netherlands [2] Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany.
Nat Nanotechnol. 2014 Nov;9(11):886-90. doi: 10.1038/nnano.2014.190. Epub 2014 Sep 14.
The radiative interaction of solid-state emitters with cavity fields is the basis of semiconductor microcavity lasers and cavity quantum electrodynamics (CQED) systems. Its control in real time would open new avenues for the generation of non-classical light states, the control of entanglement and the modulation of lasers. However, unlike atomic CQED or circuit quantum electrodynamics, the real-time control of radiative processes has not yet been achieved in semiconductors because of the ultrafast timescales involved. Here we propose an ultrafast non-local moulding of the vacuum field in a coupled-cavity system as an approach to the control of radiative processes and demonstrate the dynamic control of the spontaneous emission (SE) of quantum dots (QDs) in a photonic crystal (PhC) cavity on a ∼ 200 ps timescale, much faster than their natural SE lifetimes.
固态发射器与腔场的辐射相互作用是半导体微腔激光器和腔量子电动力学（CQED）系统的基础。实时控制它将为产生非经典光态、控制纠缠和调制激光开辟新的途径。然而，与原子 CQED 或电路量子电动力学不同，由于涉及超快时间尺度，半导体中尚未实现对辐射过程的实时控制。在这里，我们提出了一种在耦合腔系统中对真空场进行超快非局域成型的方法，作为控制辐射过程的一种方法，并证明了在光子晶体（PhC）腔中对量子点（QD）的自发发射（SE）的动态控制在 ∼ 200 ps 的时间尺度上，比它们的自然 SE 寿命快得多。
