Stationary pulses of light in an atomic medium

被引:527
|
作者
Bajcsy, M
Zibrov, AS
Lukin, MD [1 ]
机构
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[2] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA
[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[4] PN Lebedev Phys Inst, Moscow 117924, Russia
关键词
D O I
10.1038/nature02176
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Physical processes that could facilitate coherent control of light propagation are under active exploration(1-5). In addition to their fundamental interest, these efforts are stimulated by practical possibilities, such as the development of a quantum memory for photonic states(6 - 8). Controlled localization and storage of photonic pulses may also allow novel approaches to manipulating of light via enhanced nonlinear optical processes(9). Recently, electromagnetically induced transparency(10) was used to reduce the group velocity of propagating light pulses(11,12) and to reversibly map propagating light pulses into stationary spin excitations in atomic media(13 - 16). Here we describe and experimentally demonstrate a technique in which light propagating in a medium of Rb atoms is converted into an excitation with localized, stationary electromagnetic energy, which can be held and released after a controllable interval. Our method creates pulses of light with stationary envelopes bound to an atomic spin coherence, offering new possibilities for photon state manipulation and nonlinear optical processes at low light levels.
引用
收藏
页码:638 / 641
页数:4
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