Y. Wu, J. Saldana, and Y. Zhu, “Large enhancement of four-wave mixing via EIT induced suppression of nonlinear photon absorptions,” Phys. Rev. A 67, 013811 (2003).

[CrossRef]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

A. B. Matsko, I. Novikova, G. R. Welch, and M. S. Zubairy, “Enhancement of Kerr nonlinearity by multiphoton coherence,” Opt. Lett. 28, 96–98 (2003).

[CrossRef]
[PubMed]

Y. Wu, L. Wen, and Y. Zhu, “Efficient hyper-Raman scattering in a resonant coherent medium,” Opt. Lett. 28, 631–633 (2003).

[CrossRef]
[PubMed]

A. S. Zibrov, C. Y. Ye, Y. V. Rostovsev, A. B. Matsko, and M. O. Scully, “Obervation of a three-photon electromagnetically induced transparency in hot atomic vapor,” Phys. Rev. A 65, 043817 (2002).

[CrossRef]

D. Petrosyan and G. Kurizki, “Symmetric photon-photon coupling by atoms with Zeeman-split sublevels,” Phys. Rev. A 65, 033833 (2002).

[CrossRef]

D. McGloin, D. J. Fulton, and M. H. Dunn, “Electromagnetically induced transparency in N-level cascade schemes,” Opt. Commun. 190, 221–229 (2001).

[CrossRef]

M. Yan, E. Rickey, and Y. Zhu, “Suppression of two-photon absorption by quantum interference,” Phys. Rev. A 64, 043807 (2001).

[CrossRef]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

K. Bergmann, T. Theuer, and B. W. Shore, “Coherent population transfer among quantum states of atoms and molecules,” Rev. Mod. Phys. 70, 1003–1025 (1998), and references therein.

[CrossRef]

G. S. Agarwal and W. Harshawardhan, “Inhibition and enhancement of two photon absorption,” Phys. Rev. Lett. 77, 1039–1042 (1996).

[CrossRef]
[PubMed]

O. Schmidt, R. Wynands, Z. Hussein, and D. Meschede, “Steep dispersion and group velocity below c/3000 in coherent population trapping,” Phys. Rev. A 53, R27–R30 (1996).

[CrossRef]
[PubMed]

M. Xiao, Y. Li, S. Jin, and J. Gea-Banacloche, “Measurement of dispersive properties of electromagnetically induced transparency in rubidium atoms,” Phys. Rev. Lett. 74, 666–669 (1995).

[CrossRef]
[PubMed]

R. R. Moseley, S. Shepherd, D. J. Fulton, B. D. Sinclair, and M. H. Dun, “Spatial consequences of electromagnetically induced transparency: observation of electromagnetically induced focusing,” Phys. Rev. Lett. 74, 670–673 (1995).

[CrossRef]
[PubMed]

P. Pillet, X. Valentin, R. L. Yuan, and J. Yu, “Adiabatic population transfer in a multilevel system,” Phys. Rev. A 48, 845–848 (1993).

[CrossRef]
[PubMed]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

O. Kocharovskaya, “Amplification and lasing without inversion,” Phys. Rep. 219, 175–190 (1992).

[CrossRef]

M. O. Scully, “From lasers and masers to phaseonium and phasers,” Phys. Rep. 219, 191–201 (1992).

[CrossRef]

A. V. Smith, “Numerical-studies of adiabatic population inversion in multilevel systems,” J. Opt. Soc. Am. B 9, 1543–1551 (1992).

[CrossRef]

M. O. Scully, “Enhancement of the index of refraction via quantum coherence,” Phys. Rev. Lett. 67, 1855–1858 (1991).

[CrossRef]
[PubMed]

M. O. Scully, S. Zhu, and A. Gavrielides, “Degenerate quantum-beat laser: lasing without inversion and inversion without lasing,” Phys. Rev. Lett. 62, 2813–2816 (1989).

[CrossRef]
[PubMed]

C. E. Carroll and F. T. Hioe, “Three-state model driven by two laser beams,” Phys. Rev. A 36, 724–729 (1987).

[CrossRef]
[PubMed]

B. W. Shore, “Gating of population flow in resonant multiphoton excitation,” Phys. Rev. A 29, 1578–1582 (1984).

[CrossRef]

G. S. Agarwal and W. Harshawardhan, “Inhibition and enhancement of two photon absorption,” Phys. Rev. Lett. 77, 1039–1042 (1996).

[CrossRef]
[PubMed]

K. Bergmann, T. Theuer, and B. W. Shore, “Coherent population transfer among quantum states of atoms and molecules,” Rev. Mod. Phys. 70, 1003–1025 (1998), and references therein.

[CrossRef]

C. E. Carroll and F. T. Hioe, “Three-state model driven by two laser beams,” Phys. Rev. A 36, 724–729 (1987).

[CrossRef]
[PubMed]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

R. R. Moseley, S. Shepherd, D. J. Fulton, B. D. Sinclair, and M. H. Dun, “Spatial consequences of electromagnetically induced transparency: observation of electromagnetically induced focusing,” Phys. Rev. Lett. 74, 670–673 (1995).

[CrossRef]
[PubMed]

D. McGloin, D. J. Fulton, and M. H. Dunn, “Electromagnetically induced transparency in N-level cascade schemes,” Opt. Commun. 190, 221–229 (2001).

[CrossRef]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

D. McGloin, D. J. Fulton, and M. H. Dunn, “Electromagnetically induced transparency in N-level cascade schemes,” Opt. Commun. 190, 221–229 (2001).

[CrossRef]

R. R. Moseley, S. Shepherd, D. J. Fulton, B. D. Sinclair, and M. H. Dun, “Spatial consequences of electromagnetically induced transparency: observation of electromagnetically induced focusing,” Phys. Rev. Lett. 74, 670–673 (1995).

[CrossRef]
[PubMed]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

M. O. Scully, S. Zhu, and A. Gavrielides, “Degenerate quantum-beat laser: lasing without inversion and inversion without lasing,” Phys. Rev. Lett. 62, 2813–2816 (1989).

[CrossRef]
[PubMed]

M. Xiao, Y. Li, S. Jin, and J. Gea-Banacloche, “Measurement of dispersive properties of electromagnetically induced transparency in rubidium atoms,” Phys. Rev. Lett. 74, 666–669 (1995).

[CrossRef]
[PubMed]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

S. E. Harris, “Electromagentically induced transparency,” Phys. Today 50 (7), 36–37 (1997), and references therein.

[CrossRef]

G. S. Agarwal and W. Harshawardhan, “Inhibition and enhancement of two photon absorption,” Phys. Rev. Lett. 77, 1039–1042 (1996).

[CrossRef]
[PubMed]

C. E. Carroll and F. T. Hioe, “Three-state model driven by two laser beams,” Phys. Rev. A 36, 724–729 (1987).

[CrossRef]
[PubMed]

O. Schmidt, R. Wynands, Z. Hussein, and D. Meschede, “Steep dispersion and group velocity below c/3000 in coherent population trapping,” Phys. Rev. A 53, R27–R30 (1996).

[CrossRef]
[PubMed]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

M. Xiao, Y. Li, S. Jin, and J. Gea-Banacloche, “Measurement of dispersive properties of electromagnetically induced transparency in rubidium atoms,” Phys. Rev. Lett. 74, 666–669 (1995).

[CrossRef]
[PubMed]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

O. Kocharovskaya, “Amplification and lasing without inversion,” Phys. Rep. 219, 175–190 (1992).

[CrossRef]

D. Petrosyan and G. Kurizki, “Symmetric photon-photon coupling by atoms with Zeeman-split sublevels,” Phys. Rev. A 65, 033833 (2002).

[CrossRef]

M. Xiao, Y. Li, S. Jin, and J. Gea-Banacloche, “Measurement of dispersive properties of electromagnetically induced transparency in rubidium atoms,” Phys. Rev. Lett. 74, 666–669 (1995).

[CrossRef]
[PubMed]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

A. B. Matsko, I. Novikova, G. R. Welch, and M. S. Zubairy, “Enhancement of Kerr nonlinearity by multiphoton coherence,” Opt. Lett. 28, 96–98 (2003).

[CrossRef]
[PubMed]

A. S. Zibrov, C. Y. Ye, Y. V. Rostovsev, A. B. Matsko, and M. O. Scully, “Obervation of a three-photon electromagnetically induced transparency in hot atomic vapor,” Phys. Rev. A 65, 043817 (2002).

[CrossRef]

D. McGloin, D. J. Fulton, and M. H. Dunn, “Electromagnetically induced transparency in N-level cascade schemes,” Opt. Commun. 190, 221–229 (2001).

[CrossRef]

O. Schmidt, R. Wynands, Z. Hussein, and D. Meschede, “Steep dispersion and group velocity below c/3000 in coherent population trapping,” Phys. Rev. A 53, R27–R30 (1996).

[CrossRef]
[PubMed]

R. R. Moseley, S. Shepherd, D. J. Fulton, B. D. Sinclair, and M. H. Dun, “Spatial consequences of electromagnetically induced transparency: observation of electromagnetically induced focusing,” Phys. Rev. Lett. 74, 670–673 (1995).

[CrossRef]
[PubMed]

D. Petrosyan and G. Kurizki, “Symmetric photon-photon coupling by atoms with Zeeman-split sublevels,” Phys. Rev. A 65, 033833 (2002).

[CrossRef]

P. Pillet, X. Valentin, R. L. Yuan, and J. Yu, “Adiabatic population transfer in a multilevel system,” Phys. Rev. A 48, 845–848 (1993).

[CrossRef]
[PubMed]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

M. Yan, E. Rickey, and Y. Zhu, “Suppression of two-photon absorption by quantum interference,” Phys. Rev. A 64, 043807 (2001).

[CrossRef]

A. S. Zibrov, C. Y. Ye, Y. V. Rostovsev, A. B. Matsko, and M. O. Scully, “Obervation of a three-photon electromagnetically induced transparency in hot atomic vapor,” Phys. Rev. A 65, 043817 (2002).

[CrossRef]

Y. Wu, J. Saldana, and Y. Zhu, “Large enhancement of four-wave mixing via EIT induced suppression of nonlinear photon absorptions,” Phys. Rev. A 67, 013811 (2003).

[CrossRef]

O. Schmidt, R. Wynands, Z. Hussein, and D. Meschede, “Steep dispersion and group velocity below c/3000 in coherent population trapping,” Phys. Rev. A 53, R27–R30 (1996).

[CrossRef]
[PubMed]

A. S. Zibrov, C. Y. Ye, Y. V. Rostovsev, A. B. Matsko, and M. O. Scully, “Obervation of a three-photon electromagnetically induced transparency in hot atomic vapor,” Phys. Rev. A 65, 043817 (2002).

[CrossRef]

M. O. Scully, “From lasers and masers to phaseonium and phasers,” Phys. Rep. 219, 191–201 (1992).

[CrossRef]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

M. O. Scully, “Enhancement of the index of refraction via quantum coherence,” Phys. Rev. Lett. 67, 1855–1858 (1991).

[CrossRef]
[PubMed]

M. O. Scully, S. Zhu, and A. Gavrielides, “Degenerate quantum-beat laser: lasing without inversion and inversion without lasing,” Phys. Rev. Lett. 62, 2813–2816 (1989).

[CrossRef]
[PubMed]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

R. R. Moseley, S. Shepherd, D. J. Fulton, B. D. Sinclair, and M. H. Dun, “Spatial consequences of electromagnetically induced transparency: observation of electromagnetically induced focusing,” Phys. Rev. Lett. 74, 670–673 (1995).

[CrossRef]
[PubMed]

K. Bergmann, T. Theuer, and B. W. Shore, “Coherent population transfer among quantum states of atoms and molecules,” Rev. Mod. Phys. 70, 1003–1025 (1998), and references therein.

[CrossRef]

B. W. Shore, “Gating of population flow in resonant multiphoton excitation,” Phys. Rev. A 29, 1578–1582 (1984).

[CrossRef]

R. R. Moseley, S. Shepherd, D. J. Fulton, B. D. Sinclair, and M. H. Dun, “Spatial consequences of electromagnetically induced transparency: observation of electromagnetically induced focusing,” Phys. Rev. Lett. 74, 670–673 (1995).

[CrossRef]
[PubMed]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

K. Bergmann, T. Theuer, and B. W. Shore, “Coherent population transfer among quantum states of atoms and molecules,” Rev. Mod. Phys. 70, 1003–1025 (1998), and references therein.

[CrossRef]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

P. Pillet, X. Valentin, R. L. Yuan, and J. Yu, “Adiabatic population transfer in a multilevel system,” Phys. Rev. A 48, 845–848 (1993).

[CrossRef]
[PubMed]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

Y. Wu, L. Wen, and Y. Zhu, “Efficient hyper-Raman scattering in a resonant coherent medium,” Opt. Lett. 28, 631–633 (2003).

[CrossRef]
[PubMed]

Y. Wu, J. Saldana, and Y. Zhu, “Large enhancement of four-wave mixing via EIT induced suppression of nonlinear photon absorptions,” Phys. Rev. A 67, 013811 (2003).

[CrossRef]

O. Schmidt, R. Wynands, Z. Hussein, and D. Meschede, “Steep dispersion and group velocity below c/3000 in coherent population trapping,” Phys. Rev. A 53, R27–R30 (1996).

[CrossRef]
[PubMed]

M. Xiao, Y. Li, S. Jin, and J. Gea-Banacloche, “Measurement of dispersive properties of electromagnetically induced transparency in rubidium atoms,” Phys. Rev. Lett. 74, 666–669 (1995).

[CrossRef]
[PubMed]

M. Yan, E. Rickey, and Y. Zhu, “Suppression of two-photon absorption by quantum interference,” Phys. Rev. A 64, 043807 (2001).

[CrossRef]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

A. S. Zibrov, C. Y. Ye, Y. V. Rostovsev, A. B. Matsko, and M. O. Scully, “Obervation of a three-photon electromagnetically induced transparency in hot atomic vapor,” Phys. Rev. A 65, 043817 (2002).

[CrossRef]

P. Pillet, X. Valentin, R. L. Yuan, and J. Yu, “Adiabatic population transfer in a multilevel system,” Phys. Rev. A 48, 845–848 (1993).

[CrossRef]
[PubMed]

P. Pillet, X. Valentin, R. L. Yuan, and J. Yu, “Adiabatic population transfer in a multilevel system,” Phys. Rev. A 48, 845–848 (1993).

[CrossRef]
[PubMed]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

M. O. Scully, S. Zhu, and A. Gavrielides, “Degenerate quantum-beat laser: lasing without inversion and inversion without lasing,” Phys. Rev. Lett. 62, 2813–2816 (1989).

[CrossRef]
[PubMed]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

Y. Wu, J. Saldana, and Y. Zhu, “Large enhancement of four-wave mixing via EIT induced suppression of nonlinear photon absorptions,” Phys. Rev. A 67, 013811 (2003).

[CrossRef]

Y. Wu, L. Wen, and Y. Zhu, “Efficient hyper-Raman scattering in a resonant coherent medium,” Opt. Lett. 28, 631–633 (2003).

[CrossRef]
[PubMed]

M. Yan, E. Rickey, and Y. Zhu, “Suppression of two-photon absorption by quantum interference,” Phys. Rev. A 64, 043807 (2001).

[CrossRef]

A. S. Zibrov, C. Y. Ye, Y. V. Rostovsev, A. B. Matsko, and M. O. Scully, “Obervation of a three-photon electromagnetically induced transparency in hot atomic vapor,” Phys. Rev. A 65, 043817 (2002).

[CrossRef]

D. McGloin, D. J. Fulton, and M. H. Dunn, “Electromagnetically induced transparency in N-level cascade schemes,” Opt. Commun. 190, 221–229 (2001).

[CrossRef]

A. B. Matsko, I. Novikova, G. R. Welch, and M. S. Zubairy, “Enhancement of Kerr nonlinearity by multiphoton coherence,” Opt. Lett. 28, 96–98 (2003).

[CrossRef]
[PubMed]

Y. Wu, L. Wen, and Y. Zhu, “Efficient hyper-Raman scattering in a resonant coherent medium,” Opt. Lett. 28, 631–633 (2003).

[CrossRef]
[PubMed]

O. Kocharovskaya, “Amplification and lasing without inversion,” Phys. Rep. 219, 175–190 (1992).

[CrossRef]

M. O. Scully, “From lasers and masers to phaseonium and phasers,” Phys. Rep. 219, 191–201 (1992).

[CrossRef]

O. Schmidt, R. Wynands, Z. Hussein, and D. Meschede, “Steep dispersion and group velocity below c/3000 in coherent population trapping,” Phys. Rev. A 53, R27–R30 (1996).

[CrossRef]
[PubMed]

D. Petrosyan and G. Kurizki, “Symmetric photon-photon coupling by atoms with Zeeman-split sublevels,” Phys. Rev. A 65, 033833 (2002).

[CrossRef]

C. E. Carroll and F. T. Hioe, “Three-state model driven by two laser beams,” Phys. Rev. A 36, 724–729 (1987).

[CrossRef]
[PubMed]

P. Pillet, X. Valentin, R. L. Yuan, and J. Yu, “Adiabatic population transfer in a multilevel system,” Phys. Rev. A 48, 845–848 (1993).

[CrossRef]
[PubMed]

Y. Wu, J. Saldana, and Y. Zhu, “Large enhancement of four-wave mixing via EIT induced suppression of nonlinear photon absorptions,” Phys. Rev. A 67, 013811 (2003).

[CrossRef]

B. W. Shore, “Gating of population flow in resonant multiphoton excitation,” Phys. Rev. A 29, 1578–1582 (1984).

[CrossRef]

J. Gao, S. Yang, D. Wang, X. Guo, K. Chen, Y. Jiang, and B. Zhao, “Electromagnetically induced inhibition of two-photon absorption in sodium vapor,” Phys. Rev. A 61, 023401 (2000).

[CrossRef]

M. Yan, E. Rickey, and Y. Zhu, “Suppression of two-photon absorption by quantum interference,” Phys. Rev. A 64, 043807 (2001).

[CrossRef]

A. S. Zibrov, C. Y. Ye, Y. V. Rostovsev, A. B. Matsko, and M. O. Scully, “Obervation of a three-photon electromagnetically induced transparency in hot atomic vapor,” Phys. Rev. A 65, 043817 (2002).

[CrossRef]

A. D. Greentree, D. Richards, J. A. Vaccaro, A. V. Durrant, S. R. de Echaniz, D. M. Segal, and J. P. Marangos, “Intensity-dependent dispersion under conditions of electromagnetically induced transparency in coherently prepared multistate atoms,” Phys. Rev. A 67, 023818 (2003).

[CrossRef]

M. Fleischhauer, C. H. Keitel, M. O. Scully, C. Su, B. T. Ulrich, and S. Y. Zhu, “Resonantly enhanced refractive index without absorption via atomic coherence,” Phys. Rev. A 46, 1468–1487 (1992).

[CrossRef]
[PubMed]

M. O. Scully, S. Zhu, and A. Gavrielides, “Degenerate quantum-beat laser: lasing without inversion and inversion without lasing,” Phys. Rev. Lett. 62, 2813–2816 (1989).

[CrossRef]
[PubMed]

G. S. Agarwal and W. Harshawardhan, “Inhibition and enhancement of two photon absorption,” Phys. Rev. Lett. 77, 1039–1042 (1996).

[CrossRef]
[PubMed]

M. O. Scully, “Enhancement of the index of refraction via quantum coherence,” Phys. Rev. Lett. 67, 1855–1858 (1991).

[CrossRef]
[PubMed]

M. Xiao, Y. Li, S. Jin, and J. Gea-Banacloche, “Measurement of dispersive properties of electromagnetically induced transparency in rubidium atoms,” Phys. Rev. Lett. 74, 666–669 (1995).

[CrossRef]
[PubMed]

R. R. Moseley, S. Shepherd, D. J. Fulton, B. D. Sinclair, and M. H. Dun, “Spatial consequences of electromagnetically induced transparency: observation of electromagnetically induced focusing,” Phys. Rev. Lett. 74, 670–673 (1995).

[CrossRef]
[PubMed]

S. E. Harris, “Electromagentically induced transparency,” Phys. Today 50 (7), 36–37 (1997), and references therein.

[CrossRef]

K. Bergmann, T. Theuer, and B. W. Shore, “Coherent population transfer among quantum states of atoms and molecules,” Rev. Mod. Phys. 70, 1003–1025 (1998), and references therein.

[CrossRef]

E. Arimondo, “Coherent population trapping in laser spectroscopy,” in Progress in Optics, E. Wolf, ed. (Elsevier, Amsterdam, 1996), pp. 257–354.