Steep optical-wave group-velocity reduction and "storage" of light without on-resonance electromagnetically induced transparency

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 66, Issue 3, 2002, Pages 318011-318014

  Kozuma, M ^a   Akamatsu, D ^a   Deng, L ^a   Hagley, E W ^a   Payne, M G ^a  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

GROUND STATE; LIGHT POLARIZATION; LIGHT PROPAGATION; PHOTONS; RESONANCE;

ELECTROMAGNETICALLY INDUCED TRANSPARENCY (EIT);

LIGHT INTERFERENCE;

EID: 0036757808     PISSN: 10502947     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (17)

1. S.E. Harris, Phys. Today 50(7), 36 (1997).
2. The on-one-photon-resonance EIT scheme is the most widely used EIT scheme, and therefore we compare our scheme to this one in the present study.
3. L.V. Hau et al., Nature (London) 397, 594 (1999); M.M. Kash et al., Phys. Rev. Lett. 82, 5229 (1999).
4. L.V. Hau et al., Nature (London) 397, 594 (1999); M.M. Kash et al., Phys. Rev. Lett. 82, 5229 (1999).
5. For early work on group-velocity reduction with an EIT scheme, see A. Kasapi et al. Phys. Rev. A 74, 2447 (1995); O. Schmidt et al., Phys. Rev. A 53, R27 (1996); G. Muller et al., Opt. Commun. 127, 77 (1996).
6. For early work on group-velocity reduction with an EIT scheme, see A. Kasapi et al. Phys. Rev. A 74, 2447 (1995); O. Schmidt et al., Phys. Rev. A 53, R27 (1996); G. Muller et al., Opt. Commun. 127, 77 (1996).
7. For early work on group-velocity reduction with an EIT scheme, see A. Kasapi et al. Phys. Rev. A 74, 2447 (1995); O. Schmidt et al., Phys. Rev. A 53, R27 (1996); G. Muller et al., Opt. Commun. 127, 77 (1996).
8. C. Liu et al., Nature (London) 490, 409 (2001); D.F. Phillips et al., Phys. Rev. Lett. 86, 783 (2001).
9. C. Liu et al., Nature (London) 490, 409 (2001); D.F. Phillips et al., Phys. Rev. Lett. 86, 783 (2001).
10. 1 line, where the laser couplings are such that the influence of the nearby state is minimal, the observed loss can be well explained by the residual two-photon detuning, see M.G. Payne and L. Deng, Phys, Rev. A (to be published).
11. 1 line, where the laser couplings are such that the influence of the nearby state is minimal, the observed loss can be well explained by the residual two-photon detuning, see M.G. Payne and L. Deng, Phys, Rev. A (to be published).
12. L. Deng, M. Kozuma, E.W. Hagley, and M.G. Payne, Phys. Rev. A 65, 051805(R) (2002).
13. M.G. Payne and L. Deng, Phys. Rev. A 64, 031802(R) (2001).
14. J.Q. Liang et al., Phys. Rev. A 65, 031801 (2002). This study has employed a very large one-photon detuning and a solid sample with a very different coupling scheme (the coupling laser does not couple two empty states as in a conventional EIT scheme, and there is a nonvanishing two-photon detuning). Such a different coupling scheme has very different dynamics, especially at small two-photon detunings where the experiment was carried out, see Ref. [8] above. In fact, the slowdown effect and low loss are ambiguous because active Raman gain exists in such an excitation scheme. In addition, the presence of the anti-Stokes field makes the system effectively a complicated mixture of two-photon pumping and partially incoherent four-wave mixing with no clean atomic coherence in the two-photon terminal state. Finally, but most importantly, the experiment does not rely on any solid properties even though a solid sample was used. The energy levels are of a molecular nature because of the near-liquid-He temperature. In essence, it invokes only single-particle properties in a sample in which the atomic interspacing is constant.
15. P.R. Hemmer et al., Phys. Rev. Lett. 88, 023602 (2002). This study used a very small one-photon detuning in addition to various two-photon detunings. The result for zero two-photon detuning shows more than 90% loss with a significantly distorted probe pulse and the probe pulse broke up when a small one-photon detuning is used. Further, since the sample is cooled down to liquid-He temperature, only atomic ionic properties rather than any solid properties are invoked.
16. We emphasize that in our work the probe and coupling laser detunings are changed together, so that the two-photon resonance is strictly enforced and only the one-photon detuning was varied.
17. 2], which enters the pulse duration of the probe field during the propagation, is proportional to the spectral width of the upper state.