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Title: v<<c


1
?????????????
????????????????????????
??? ???
?????????
2012.8.17 ?? ??
2
????
  • ????
  • ????
  • ????
  • ??

3
????
4
????
?????????????
????
???? ??? vltltc
VS
5
????
????
???? ????
???? ????
VS
?????? Electromagnetically induced transparency
(EIT) ??????????????????
(Kocharovskaya,Harris,1991)
?????? Active Raman gain (ARG)
?????????????????
6
????
1.??????(EIT)
??????????
  • ?????????????,??????????????????, ???????????,
    ???????? Kocharovskaya,Harris, 1991
  • ???????, ???????????????????, ?????????, ?????????

????????????
  • ????????(?????)
  • ????????

7
EIT ???????????
????
  • ???????????
  • ????? Harris Y. Zhu
  • ????????
  • ????? Fleischhauer Lukin Hau
  • ????? Phillips
  • ????? Kerr ???
  • ??????? Harris Hemmer Lukin Deng
    Wu
  • ???? Wu Deng Huang
  • ????????????? Ottaviani Petrosyan
  • ????
  • ??????? Lukin
  • ?????? Ye
  • ?????? Pu Zhang
  • ???????? Xiao

EIT Electromagnetically induced transparency
8
????
2 ???????? (Active Raman gain ARG)
L?
N ?
???,?????1gt?,??????????,???????????????,?????????
?,?2gt????????,????????????????
9
??ARG???
????
L ?
N ?
ARGActive Raman gain
10
ARG ?????
????
  • 1. ????????? L.J.Wang,et al,Nature,2000.
  • 2. ??????????,?????????
  • 3. ? Kerr ??? L.Deng,et al,PRL,2007
  • 4. ???????????

ARGActive Raman gain
11
????
3.??????????????????
  • ????
  • ?????
  • ?????????(???)

(j1,2,3) ?
??????????
  • ??? Hamiltonian

?????
??????
??
????????
12
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  • ????

???????
??????
??
????? Rabi ??
?????????????
13
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  • ????

??? Maxwell ??
???????????????????,??
???????????????,?
14
????
  • ????

  • ??

15
????
3.?????
11 ???(????) ??????(????).???????????
21 ?????(???Kerr????????????????????)
1.??????????
2.?-??????????
3.?????Kerr?????????
4.??????(metamaterial??????) (21 D
????????)
31 ???? ???21????!
???????????Kerr?????,?????????31
????????????????? 31 ????,???????????!
16
????
17
????
Rb 87 D1 ?
18
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??????????
19
????
??1?????
??2?????
20
????
????
????????
????????????????
21
????
22
????
??
(1)
(2)

??
23
????
Vakhitov-Kolololov ??
24
?????????
????
Nature, 406,277(2000).
25
?????????
????
Array of waveguide PRL.105.263901(2010)
26
????
27
???????????
????
28
????
29
????
30
???????????
????
31
????
32
????
33
???????????
????
34
????
35
????
36
???????????
????
37
? ?
38
??
  • 1. ????ARG??????????????????
  • 2. ????(???????)??????????
  • 3. ???????
  • 4. ???????????

ARGActive Raman gain
39
????
  • Hui-jun Li, Yuan-po Wu, and Guoxiang Huang,
    Stable weak-light ultraslow spatiotemporal
    solitons via atomic coherence, Phys. Rev. A
    84(2011)033816
  • Hui-jun Li, Liangwei Dong, C. Hang, and G. Huang,
    Gain-assisted high-dimensional self-trapped laser
    beams at very low light levels, Phys. Rev. A
    83(2011)023816
  • Hui-jun Li, Yuan-po Wu, and Guoxiang Huang,
    Stable Superluminal Light Bullets and Vortices at
    Weak Light Level, to be submitted
  • ????http//course.zjnu.cn/hjli/

40
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  • ???????????????????Anderson???

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41
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????? (??????) ????? (??NIST) ?????(??????) ????(?
?????) ?????(??????) ???(????????)
42
  • ? ? ? ? !

43
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