ERRATA

Quantum-nondemolition measurement bya two-photon transition

in the presence of the Stark shift: errata

Guojan Yang and Kaige Wang

Department of Physics, Beijing Normal University, Beijing 100875, China

Received July 14, 1997

[S0740-3224(97)06411-4]

Equations (17) and (18) in Ref. 1 should be replaced by

^ajin&

u^ajin&u

5^aj

out&

u^ajout&u

exp@2i~F jin 1 F j

out!# , j 5 1, 2, (17)

F jin 5 arctan F2

u j8~1 1 D82! 2 2CjD8X32jm

1 1 D82 1 2Cj X32jmG ,

F jout 5 arctan F2

u j8~1 1 D82! 2 2CjD8X32jm

1 1 D82 2 2Cj X32jmG , j 5 1, 2 . (18)

We have made the numerical calculation by using a jout 5 a j

in 1 F jin 1 F j

out and found that Figs. 3 and 4 are approximatelyidentical to those for a j

out 5 a jin 1 2F j in Ref. 1 because in our consideration of D 5 60 we have 1 1 D82

@ 2Cj X32jm and hence F jin 1 F j

out ' 2F j .

REFERENCE1. Guojan Yang and Kaige Wang, ‘‘Quantum-nondemolition measurement by a two-photon transition in the presence of the Stark

shift,’’ J. Opt. Soc. Am. B 14, 1550–1555 (1997).

0740-3224/98/020722-01$10.00 © 1998 Optical Society of America