Electromagnetically induced transparency in a thin vapor film

Petrosyan, David; Malakyan, Yu.

doi:10.1103/physreva.61.053820

Cited by 24 publications

(19 citation statements)

References 27 publications

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“…The fact that we have not found other pulse group velocities than c and c −1 + G/Ω 2 −1 is in full agreement with the results of perturbative approach [16,17].…”

Section: Slow and Fast Pulses: The Analytic Solutionsupporting

confidence: 91%

“…Paspalakis and Knight [16] considered parametric frequency generation for the case of time-independent fields at the medium entrance and calculated the group velocity of a weak probe field. Petrosyan and Malakyan [17] investigated theoretically EIT in a tripod medium as a tool for optical cross-phase modulation and high-precision magnetometry in the weak probe field limit. The value of the group velocity obtained in [16,17] is strongly reduced with respect to c in the same way as in the standard case of EIT in a three-level medium [3].…”

Section: Introductionmentioning

confidence: 99%

“…Petrosyan and Malakyan [17] investigated theoretically EIT in a tripod medium as a tool for optical cross-phase modulation and high-precision magnetometry in the weak probe field limit. The value of the group velocity obtained in [16,17] is strongly reduced with respect to c in the same way as in the standard case of EIT in a three-level medium [3]. In the theoretical interpretation of the experiment on four-wave mixing in a solid-state system with the tripod level configuration [18] and other numerical calculations by Ham [19] related to that system, small optical density of the medium was assumed.…”

Section: Introductionmentioning

confidence: 99%

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Adiabatic pulse propagation in coherent atomic media with the tripod level configuration

Mazets

2005

Phys. Rev. A

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We investigate the problem of propagation of three-component resonant light pulses with adiabatically varying amplitudes through a medium consisting of atoms with the tripod level configuration. By means of both analytic and numerical methods we found the two modes of shape-preserving pulse propagation. The pulse propagation velocity is found to be either equal to the speed of light or significantly slowed down, depending on a particular propagation mode.

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“…The fact that we have not found other pulse group velocities than c and c −1 + G/Ω 2 −1 is in full agreement with the results of perturbative approach [16,17].…”

Section: Slow and Fast Pulses: The Analytic Solutionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adiabatic pulse propagation in coherent atomic media with the tripod level configuration

Mazets

2005

Phys. Rev. A

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“…This work has been recently extended to the case of quantum probe and trigger fields in Ref. [41], where an adiabatic treatment similar to that of Ref. [31] is adopted.…”

Section: Introductionmentioning

confidence: 99%

Polarization phase gate with a tripod atomic system

et al. 2004

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We analyze the nonlinear optical response of a four-level atomic system driven into a tripod configuration. The large cross-Kerr nonlinearities that occur in such a system are shown to produce nonlinear phase shifts of order . Such a substantial shift may be observed in a cold atomic gas in a magneto-optical trap where it could be feasibly exploited towards the realization of a polarization quantum phase gate. The experimental feasibility of such a gate is here examined in detail.

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“…Hence, in the case of MC one could expect that the effect of electromagnetically induced transparency (EIT) will vanish (note, that neither an additional buffer gas [1] nor paraffin coating has been used). Nevertheless, it was predicted in [2] that even in the case of pure vapor a narrow EIT resonance can be observed. Moreover, it has been demonstrated that in the case of nonzero detuning of the coupling laser, the EIT resonance and velocity-selective optical pumping (VSOP) resonance are shifted with respect to each other on the frequency scale, which makes it possible to observe a competition between the two effects (this is not possible to realize in an ordinary cm-size cell (OC)).…”

Section: Emailmentioning

confidence: 93%

Dark-Line Atomic Resonances in Micrometric Rb-Vapor Layer

Malakyan

Pashayan-Leroy

Leroy

et al. 2007

2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference

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Email:Compact frequency references become increasingly important for many applications in recent years [1]. We present measurements of dark-line resonances excited in Rb atomic vapor confined in micrometric cells (MC). The width and contrast of the resonances were measured for cell lengths below 100 ptm. As the size of the vapor cell is reduced, the lifetime of the ground-state coherence becomes shorter because of collisions of the atoms with the cell windows. Hence, in the case of MC one could expect that the effect of electromagnetically induced transparency (EIT) will vanish (note, that neither an additional buffer gas [1] nor paraffin coating has been used). Nevertheless, it was predicted in [2] that even in the case of pure vapor a narrow EIT resonance can be observed. Moreover, it has been demonstrated that in the case of nonzero detuning of the coupling laser, the EIT resonance and velocity-selective optical pumping (VSOP) resonance are shifted with respect to each other on the frequency scale, which makes it possible to observe a competition between the two effects (this is not possible to realize in an ordinary cm-size cell (OC)). In our work, the A-systems on D2 line of 85Rb have been studied with the use of bi-chromatic radiation of two separate narrowband diode lasers (2 z780 nm) (Fig. 1). In Fig.2 we show the transmission spectrum of the probe laser when the couple is red shifted by 90 MHz from Fg=2 -*Fe=2 transition (upper curve) and is resonant with Fg=2 -*Fe=3 transition (middle curve), while the probe laser frequency is scanned across Fg 3 -> Fe=2, 3, 4 transitions (Qc, Qp -0.5 F, Fr 6 MHz , L 1 O ptm. The lower curve is the reference spectrum of the ETC for L X [3]. EIT CU 3--___ -~~--efrece 2-+ 63MHz 121 MHz F ig.1 Fig.2 Frequency DifferenceThere are several dramatic distinctions in formation of EIT and VSOP resonances in MC as compared with OC. Particularly, in the case of MC the most narrow EIT resonance is formed when the couple is resonant with the corresponding atomic transition (middle curve, YEIT < 7MHz), The increase of the couple detuning leads to the rapid linewidth broadening (upper curve, YEIT -I I MHz), while in the case of OC the effect is vice versa. Note that in the upper and middle curves the VSOP resonances are of the opposite sign. A theoretical model describing EIT effect and VSOP behavior in MC is developed, and the comparison with the experiment will be presented.[1] S. Knappe, L. Hollberg, and J. Kitching, Opt. Lett. 29, 388 (2004) [2] D. Petrosyan and Yu. Malakyan, Phys. Rev. A 61, 053820 (2000) [3] A. Sargsyan, D. Sarkisyan, and A. Papoyan, Phys. Rev. A 73, 033803 (2006).

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Electromagnetically induced transparency in a thin vapor film

Cited by 24 publications

References 27 publications

Adiabatic pulse propagation in coherent atomic media with the tripod level configuration

Adiabatic pulse propagation in coherent atomic media with the tripod level configuration

Polarization phase gate with a tripod atomic system

Dark-Line Atomic Resonances in Micrometric Rb-Vapor Layer

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