Departamento de Física, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos, São Paulo, Brazil and Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, D-85748 Garching, Germany.
Phys Rev Lett. 2013 Sep 13;111(11):113602. doi: 10.1103/PhysRevLett.111.113602. Epub 2013 Sep 11.
We study the all-optical control of the quantum fluctuations of a light beam via a combination of single-atom cavity quantum electrodynamics (CQED) and electromagnetically induced transparency (EIT). Specifically, the EIT control field is used to tune the CQED transition frequencies in and out of resonance with the probe light. In this way, photon blockade and antiblockade effects are employed to produce sub-Poissonian and super-Poissonian light fields, respectively. The achievable quantum control paves the way towards the realization of a prototype of a novel quantum transistor which amplifies or attenuates the relative intensity noise of a light beam. Its feasibility is demonstrated by calculations using realistic parameters from recent experiments.
我们通过单原子腔量子电动力学（CQED）和电磁感应透明（EIT）的组合来研究光束量子涨落的全光控制。具体来说，EIT 控制场用于调谐 CQED 跃迁频率与探测光的共振和非共振。通过这种方式，光子阻塞和反阻塞效应分别用于产生亚泊松和超泊松光场。可实现的量子控制为实现新型量子晶体管的原型铺平了道路，该晶体管可放大或衰减光束的相对强度噪声。使用最近实验的实际参数进行计算证明了其可行性。
