! "#$% ! &' ( ! (!&)&" * # +,,, - ) . .- ! ! " # $ $ ! " " % && ' ( &) * + &( , ,-. ' / &+ * % * 0 1 )& -20 0 && )) &) )( 3 ' &1 )+ 2 &4 )/ . )) )1 !0 0 20 )1 )5 6 7 )4 )8 . (& (& 0 0 0 (+ () % (5 (( 6 9"* (4 (+ . :;) (/ . (1 +) +( . +1 & ) &4)/ - << = 0 ' >&? 0 @ 3 A * << < B < C 00 0 A 0 << < <D 9 ' 3 ' E , ! < ' F < < CE ' 'A ' ' 0 D 0 00 ' , 00 ' F - 0 ,- 5G ' 20 ' 2 ,- * ,-. = 0 Æ 0 00 " 0 * ,-. &44/ >) ( +? 0 0 0 0 ' 3 >:&&? , ' ' )) 0 ,-.0 ' /H 20 0 0 ' 20 F ' *' F F 0' = = 0 F ' 0 0 >/? >1? 0I' >5? = 2 >8 4? 0 >&G && &)? ( number of papers 600 500 400 300 200 100 1984 1986 1988 1990 1992 1994 1996 1998 2000 year : && ! 0 0 0 ' <,< E" <-< 'A 3 << J' )GGG < ¾< ' )GGG K >&( &+? * ' >&/ &1 &5 &8? ' >&4 )G )&? 2 >))? 0 >)(? 0F >)+ )/? E 2' 0' * 0 0K 0 0 ' 0' >)/ )+? 0 ) 0F 20 ' * 0 20 0F 0 >)(? , 00' >)1? . 0 ) '' 2 F 7 >)5? 20 * Æ 0 ' 0 ' 9 0 3 0 ' ' 0 =0 0 20 3 0 0 >)8 )4? 0 ( 0' 0 0 # 0 ,' + ' 00 0 * 0 0 * 0 ' 00 =' 0 00' 0 0 0 ' 0 00 ' '0F # 0 '0F ; G . 0 ( 0 :;& ;G :;) ;G 00 00 * ' ' ,-. 2' >(G? 0 ,- 0 0 , ; & ) L C&&D * ' 0 ' ;&G C'0 D 0 ' & $ * ' 0 0 * 0 0 F 00 F 0 0 0 * 0 ' ' 002 ; ) C M M D C&)D 00 = * ' 0 ' 002 B! = L ; * )L M M C&(D 3 = 0 7 F ' ; + L 3 ' ' ' * 3 ; ) 5 = C&(D / CCD camera oven Zeeman slower slower light mot-beams probe light cloverleaf trap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|3 > }, a) 9d 9p BEC } |2 |1 : )& > Recoiling atoms Matter wave grating b) @ Probe beam “Dressing” beam > PMT D 6 '0 20 ' 0 ' & & ) '0F ) * CP D 0 CP D D * ' * F = Æ ,' ' " 0 F ' 0 * 0 ' ' * 0 ' 0 : 0 0 , = 0 0 20 = ' = 2 0 0 , = 2 0 * 2 00 0 3 ,- ' ' 0 ' C D * ' 0 ' * 0 ' B 0 ' 0 00 # 0 ' &O 0 ' 0 * 20 = ' 0 0 C 0 D ,' ' 2 * ' 0 >)(? E * 7 0 , = 0 * F 2 0 F - 0 * 0 0 ' 0 &G * 0 00 0 20 : I ,' ' ' 0 : ' 00 0 20 20' 0 # Q ' ( ( >F)&? * 0 " /84 * ' 00 ' E R * ' ; & 0 0 0 0 0 S) 0 0 * )L /84 0 ( O S 9 0 L * ' >F)&? * ' 7 K ' * * ' ' * >:))? 20 0 F 0 0 0 * ' ' 0 0 0 C9%D 0 F F 0 0 * ' F 9% ' 0 * Æ Æ 4G ) S ; &(/Æ & 4& 81 S ; 3 0 )G )GG 0 ' C F 0D ' 0 0 0 0 0 0 * ' ' Æ * >F)+? >F)/? S ; 4G 0 2 && 0 20 SRS PC Fiber S AOM AOM PD Probe Beam l/2 PD PI AOM PD Dressing Beam q SRS BEC Slit Telescope PMT : )) 30 20 0 9% 0 A ! ) 0 A !. 00 A 0 A !" 0 A 3 A 33 3' A !%* ! 0 A S ) 3 0 S ; &(/ Æ 00 2 * 0 ' 0 * 0 20 0 2 >)(? # ' ' 2 ( * &5 B T ' &G 0 ' 00 2 ( ' ) * 2 ' 0 * ' 2 ( T ' * & 2 & 2 ' 0 3 00 0 * ) & ' 0' 0 ' ' I00 00 E ' 0 * 0 =' ' &) frequency in KHz a) 12 KHz 6 KHz 2.0 12 10 8 6 b) 4 -10 -5 0 5 10 1.5 amplitude 0 KHz 1.0 -6 KHz 0.5 -12 KHz c) 0.0 0.0 0.1 0.2 0.3 0.4 -10 0.5 : )( -5 0 5 10 detuning in KHz time in ms D 0 7 D = * F ' = C)&D * =' D ! 0 0 * 6 F + P7 ; P P C+TD Æ M C)&D T & 5 B P 0 =' C0D 00 0 ' & ) ,' 0 0 0 0 E 0 >F )& D? & 0 0 * 0 0 ' 0 = : 0 +L 1L , 0 0 0 ) 0 ' & # >F)( D? 0 7 Æ * =' 0 >F)( D? 3 0 00 00 0 >F)( D? * 6 F >)1? , &( a) Relative number of atoms 1.0 0.8 0.6 0.4 0.2 0.0 0 100 200 400 500 time / ms b) t=30 ms : )+ 300 600 t=400 ms 9 D * B 0 * F C& CP7 D 20 C U D P7 ) U ) * 0 D * I 0 00 0 7 0 00 9 .0 >F)&)? * 00 0 ' . 7 2 )/ 2 * I * I 0 >F)+? 3 0 ' 0 ' & ( (G I ,' P P = 00 P P >F)& D? F 0 0 * 00 I 0 00 >F)/? * 0 * K 0 20 * L / ; L 0 L 0 ,' F ' ' &+ b) a) 0 : )/ 1 time [ms] 0 1 time [ms] D 0 >F )) D? D ,' 2 P P a) b) 0 50 100 150 200 250 300 0 50 100 : )1 * 0 150 200 250 300 time [ms] time [ms] D 3 >F)/ D? )0 ' ; &)G ; &)G I ' 0 * 20 ' ' 0 D 3 >F)/ D? E 20 ' ' VC D M VC D VCD C/ L)/ D M 7 VC D ) * 0 ' L & C))D &GG 0 ,' 7 0 ) 0 0 7 ' I 0 0 C!%*D 0 A >F )1? , ' ' 0 )1 &/ % 4 (a) (b) gain 3 2 1 0 0.0 0.5 0.0 0.5 time [ms] dressing beam probe beam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time in 14 2p/G : )8 0 = 0 0 = C)8D * 0 0 0 ' ' 0 0 ' 0 0 0 = & ( &M ' & U C& 0 C)/D ' D & ; &M (C& D C)5D 2 7 0 0 ' 20 < < >F)8? * 0 0 ' $ 0 ' 0 ' ' 0 0 2 ' 20 0 0 = 0 Æ C C DM D SCDSC D ; SCDSC D M U .0 = C)5D & U = ( C &D G % C)8D 6 0 0F 0 0 ' * ' ) ' 0 0 " = 0 ) ; * +, * +, * +, * +, ; ( & (M&U C)4D * ' ' ' = 0 0 = * << ' B 0 E ' 0 B 0 * ' >F)4? )G * )G 2 0 ' &8 delay [ µs] (a) -0.2 0.0 0.2 0.4 time [ms] (b) 20 0 1 2 3 gain : )4 ! ' 0F D B 0 *0 !%* 0 0 ' &+G , ,' 0 0 G&& #O , D * ' ) 00 ( 0 0F ' ) ' ' )G * B F = C)&/D 0 & O * ' ! ' 0 I ' 7 ! ' 0 2 * 0 ' C)/D # # * 20 2 # ' 0 ' 00 0 * 0 2 : 0 ' 2 C 20 D ' C D & U ; &M C D M U ) C D U )U M C)&GD =' ' 0 =' C D = - ; & +. 0' . ' + / C U D ' 0 &4 1.001 1 c) 1 0.999 -5/ 5/ 0 Im[n(M)] b) 1/vG [s/m] Re[n(M)] a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a) c) 1.001 -5/ 0.002 5/ -10/ 0.999 -5/ 10/ -10/ 5/ 0 0 b) -F d) -0.002 : )&& 2 0 ,= 3 P ; U /GG >F)&G? 10/ 0 D * 0 ! = 0 2 D ' 0 D M 0 0 ! D ! 0 00 F * 2 20 0 = 0 =' = 0 0 002 C)&GD * 0 ,= C)(D 2 0 T ' ! " ; U T G ! T G U P P G " C)&4D * ' 7 = 2 0 : '0 0 0 ' = ' * 7 0 ! >F)&&? $ ! W ' 0 * ' 0 K 7 ' ' 0 = * 002 )) b) a) 6 4 2 0 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 time / ms time / ms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time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cattered light intensity (G - L) ms -1 30 20 10 0 -10 0.00 0.10 time / ms 0.0 1.0 Dressing light intensity / ms -1 : )&+ !0 0 00' D ' /H I 7 * : 0 )4#O /5O &(#O D * ' 0 ' ' * ' 0 0 * ' C D M C D = C))D ' 00 ' 0 0 * 0 0 0 K 0' : &" * : 002 Y & & Y C))8D * ' >F )&/? ,' 0 20 .0 00 0 20 0 = * ' ' // O 2 )G &/ : 0 G(1 * F * C))8D =' >)1? * &" 002 * (" >(5? * 20 =' 3 )5 > = 0 1.0 -1 0.8 -2 -3 0.6 -4 0.4 -5 -6 0.2 x/x0 0.0 x/x0 -7 0.0 0.0 1.0 ? 0.0 1.0 @ 0.1 0.2 0.3 0.4 0.5 0.0 0.1 0.2 0.4 t/ms t~0.32 ms t~0.32 ms : )&/ 0.5 t/ms . * : C))8D D * 0 * : ' 0 0 0 2 D * D 20 D * 0 ' >F)&+ D? ' 0 2 2 ! ; * D * ' 0 0 00 G() G(1 C3 D 4 4 , 3 3 C))4D * 0 W 6 0 2 C)&GD * : 6 20 0 * 20 C))4D ' 0 2 * 0 $ $ >(8? 1C-C DD ; & M -C D ; C D ) &C-C DD C)(GD >F)&1? 6 ( 0 C))4D ' 00 0 0 20 & )8 1 0.5 a) b) -3/ 3/ 0 : )&1 D 6 U ; ( D = C))4D * &G S ; 4GÆ ; /84 F >F)&/? ' &GH ' ( ! ) 3 002 ' ' 0 , = ' ' , 0' ' 0' 7 0 F : F 7 0 : 0 0 F K 00 00 0 F ' 00 0 0 * F ' ) 20 GL )L F F 3 >F)&5? # ' ' 0 * 0 0 0 , Æ * F , 0 # F ' 0 >)1? * 7 ' 2 OD 7 * ' C OD ' I C W0 /GH ' 0 K ' 0 9 ' , C D 0I * 0 0 2 0 2 )4 : )&5 % F D 0 ' D : 2 )L F ' D * 0 K I * ' 00 00 0 <'< a) c) b) : )&8 6 7 C % D 0 D E 7 0 2 002 * D 3 20 0 * 2 D 0 ' ' 0 ' = 0 0 C 0D 9 ' ' 0 : ' ' 0 2 . 0 2 & : 2 0 2 '0 ) &GG &G/ &5 B * >F)&8 D? * 2 (G 9p Single atom Collective Fig. 2.12 Fig. 2.14 Fig.2.7 Rabi oscillations 9d Steady state gain and slow light : )&4 Superradiance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z y x : (& 00 0 0 0 * F ' 2 ' ' ' 0 20 0 0 0 C9"*D 0 ' '0F # =' 0 ) 0 & & ) &) ( ' 2 : ' 00' & G ) G ' * 00 00 # 0 =' 0 ' * 20 7 :;& :;) + 90 0 0 ' .3 0 0 0 A 0 * 0 0 ' .3 ' 5 CD L P CD ; +T L U & CD 8T& C(&D P 0 0 =' # &G1+ * ") /84 0 T ; ) ) ( &G * 0 20 ' * ' 1 #O & & 0 U;&G % 0 9 0 0 0 0' ' &G ' 00 =' L (+ = C(5D * 0 0 ' 00 = 0 # 0 B = 0 ' 00 = * 0 0 B 0 00 =' 2 = 0 * 0 00 0 ' 0 2 0 : 0 B ' ' & C D ; 20 " C D" C D ) " C D ) 0 # ' ' Æ " C D ; " Æ " 2 &M C &O 20 " C D Æ " " C D ) C()D &O C((D 'D &G1+ 3 0 0 ' 002 3 0 0 0 "Æ ' "Æ & C D " ) Æ & )"Æ &M & "Æ "Æ ) ) ; "Æ "Æ C(+D * 0 WC2'D = C(+D = C(&D * F2 0 0 T U ' & 9 00 = ; ; ; !Æ !Æ & M !Æ 0 0 (/ ) ) &G ) ) &G ) ) &G 6 ? > 6 ? > 6 ? > C(/D 5 ; "Æ (G &G 0 ' L 8 L ; 7 8 L &/ C(1D C(5D * 00 =' F ' L ; C D ; C(8D L L : (8 &G ; )5 L >+1? C:;&D ! 0 20 ; L )8/ &G 7 ? > C(4D F ' 00 * : >(G? 9 ; ) C(&GD : 0 0 ;+G ' ;(GG 0 20 F 2 * 0 ;(GG 0 ;1G ' 2 2 0 (5/ * 0 F 0 0 C D /G 0 >F((? # 0 ' ' &/ 0 9"* * F 0 ' F 0 ' * 0 0 1GG 2 F & ' 7 F : ' 20 0 ' 0 &G 9"* * 00 = F 0 0 * 7 (1 x) Displacement t/ms 50 100 150 200 y) t/ms 100 200 1000 2000 300 400 500 z) : () 3000 4000 5000 t/ms * 00 = 0 0 0 * ' C&D F 3 0 0 (G I * 00 = ; ++( ; &/1 ; &G/G ' 20 * >F()? * 00 002 ' 0 0 * 0 &G/GO++(;)(5 20 (5/ * 0 ' ' 0 0 0 ' 7 * 8 0 7 00 ' 0 0 ' * )) 0 E;GG1 * 20 ' / "Æ ; 2 W = C(/D 00 = && * = 0 ; G +/ # 0 ' -= $ /5+ * 0 = $ /) &G C(1D 0 0 +( C(4D &G G+ 0 0 * 0 ' = C(5D &G )) &G * 00 = C(&GD (+G &)G /) ! * 0 0 00 0 0 0 K 0 E 0 ' K # 0 (5 ,d1 ,x f3 f2 f1 r d1 : (( x d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number of atoms / million 12 10 8 6 4 2 0 10 0 20 30 40 50 60 70 time / s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number of atoms / million 14 12 10 8 6 4 2 2 4 6 8 10 time / s : (/ 6 :;) ;) 0 0 0 * F ' ' ./ 9 0 0 0 0 ' 00 ' '0F 0 ' 0 F * :;) 0 ' &55 B :;& # & ) ) = & : =' ! 811) * K 0 ) * / 6 0 >/)? =' &551+()G B +G (+ B 7 F 0 :;& >F(/? 9 = C(&+(&5D 7 ) 0 0 :;) ) ;(+ >/(? = C(&/ (&5D ; 8 &/ )& 1+ L +) ) 11// &G C D C(&8D E/h in GHz 1 +2 +1 0 F=2 0.5 -1 0 -0.5 -1 0 200 400 600 -2 1000 800 1.77GHz E/h in GHz 0 -0.2 -1 -0.4 -0.6 0 -0.8 F=1 -1 0 200 400 600 +1 1000 800 B in Gauss : (1 - '0F F 3 0 :;) 0 F :;& * = ; 3 + &/ 5 1+ ; G GG5 L & +1&) &G C D C(&4D 0 ' F = C(&+D ; C& 8 G (D &G ' F = C(&1D ; C( / & GD &G .0 = C(5D ;+8 ;(( 3 20 ' ) ) 00 $ 0 ;G 3 ' = >F(1? ' ' F =' +( a) atom count atom count c) 25.5 26.0 26.5 27.0 27.5 26.20 26.25 26.30 26.35 26.40 26.15 26.20 26.25 26.30 26.35 26.40 atom count atom count 25.5 26.0 26.5 27.0 27.5 frequency / kHz (1.7716 GHz offset) : (5 26.15 d) b) frequency / kHz (1.7716 GHz offset) ) G 00' & G D D 0 00 9"* "0 D D * : 00 0 * 0 D D ) D D &/ * 0 D D / &/ I * D D )&/ D D )/1 D D )4 * = >F(8? 0 ' F I ' = 0 F 00 D+/G D)/G D)G D)G # 0 20 ' & G ) G F : F 0 )+( % )++ % & & & G 7 F (+ B ' & G & & F ' )58 B 7 * = ))& OB 7 &5G8 * 0 &5 B =' C(+D # 0 ' 00' C D F =' 0 &GH 0 :;) I # 00' 7 ' >F(5? : 00 ) 0 00 9"* * >F(5 D? 9"* C(&D : >F(5D? ++ frequency / kHz 26.5 26.4 26.3 26.2 26.1 0 20 40 60 80 100 120 12 density / 10 cm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Æ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