Abstract
We propose an efficient scheme for realizing all-optical router or beam splitter (BS) by employing a double tripod-type atomic system, where the ground levels are coupled by two additional intensity-dependent weak microwave fields. We show that the high-dimensional probe field encoded in a degree of freedom of orbital angular momentum can be stored, retrieved, and manipulated. Due to the constructive or destructive interference between the introduced microwave fields and the atomic spin coherence, the generated stationary light pulses and the retrieved probe fields can be increased or decreased with high efficiency and fidelity in a controllable manner. On the basis of the results and a general extension, a tunable all-optical router or BS, which can split a high-dimensional probe field into two or more ones, can be achieved by actively operating the controlling fields and the microwave fields. The current scheme, integrating multiple functions and showing excellent performance, could greatly enhance the tunability and capacity for the all-optical information processing.
References
Jul 4, 1994·Physical Review Letters·M ReckP Bertani
Sep 16, 2000·Physical Review Letters·M Fleischhauer, M D Lukin
Feb 15, 2001·Physical Review Letters·D F PhillipsM D Lukin
Feb 24, 2001·Nature·C LiuL V Hau
Jul 19, 2001·Nature·A MairA Zeilinger
Apr 12, 2003·Physical Review Letters·S Barreiro, J W R Tabosa
Dec 12, 2003·Nature·M BajcsyM D Lukin
Mar 24, 2005·Physical Review Letters·A AndréM D Lukin
Mar 7, 2008·Nature·K S ChoiH J Kimble
Mar 21, 2008·Physical Review Letters·Kazuhito HondaMikio Kozuma
Mar 21, 2008·Physical Review Letters·Jürgen AppelA I Lvovsky
Jun 20, 2008·Nature·H J Kimble
May 9, 2009·Science·Scott B PappH J Kimble
Jun 13, 2009·Physical Review Letters·Yen-Wei LinIte A Yu
Nov 26, 2007·Optics Express·Haihua WangJin-Yue Gao
Jul 8, 2009·Optics Express·Hai-Hua WangJin-Yue Gao
Sep 3, 2009·Optics Letters·Hai-Hua WangJin-Yue Gao
Aug 6, 2010·Nature·E ToganM D Lukin
Aug 7, 2010·Science·Jonathan LeachMiles J Padgett
Sep 10, 2011·Physical Review Letters·P Rabl
Sep 26, 2012·Physical Review Letters·Max LudwigFlorian Marquardt
Sep 1, 2015·Physical Review Letters·Zong-Quan ZhouGuang-Can Guo
Dec 15, 2015·Scientific Reports·Lei WangJin-Yue Gao
Sep 30, 2016·Scientific Reports·Kwang-Kyoon ParkYoon-Ho Kim