Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
1] State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China [2] Department of Physics and Institute of Theoretical Physics, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, People's Republic of China.
Sci Rep. 2013 Dec 19;3:3555. doi: 10.1038/srep03555.
Quantum information carriers like photons might be manipulated, stored and transmitted in different quantum systems. It is important to integrate those systems efficiently. The capability of converting photons from one wavelength to another wavelength is a key requirement for combining the photons in telecommunications band for quantum transmission and the photons in near-visible band for quantum storage. Here, we investigate the tunable single-photon frequency conversion in the five-level emitter-Sagnac interferometer system. We show that the efficient single-photon conversion can be achieved in this scheme, at the same time, the frequencies of the input and output photons can be tuned in a large scale by controlling the frequencies and Rabi frequencies of the external driving fields. The realization of this scheme may lead to the efficient combination of quantum storage system with the quantum communication system.
量子信息载体，如光子，可以在不同的量子系统中进行操纵、存储和传输。高效地集成这些系统非常重要。将光子从一个波长转换到另一个波长的能力是将量子传输中的电信波段光子和量子存储中的近可见波段光子结合起来的关键要求。在这里，我们研究了五能级发射器-萨格纳克干涉仪系统中的可调谐单光子频率转换。我们表明，在该方案中可以实现高效的单光子转换，同时通过控制外部驱动场的频率和拉比频率，可以在很大范围内调谐输入和输出光子的频率。该方案的实现可能导致量子存储系统与量子通信系统的有效组合。
