Transparency and dressing for optical pulse pairs through a double-Λ absorbing medium

Cerboneschi, E.; Arimondo, E.

doi:10.1103/physreva.52.r1823

Cited by 58 publications

(22 citation statements)

References 3 publications

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“…For example when κ 1 = κ 3 , δ ab = δ db and γ ab = γ db the expressions forM d kk are identical (apart from the factor ω 1 ) with the expressions for the susceptibilities given by Eqs. (26) and (21). One can also see that for γ cb = 0 at the line centre ω = 0 the "susceptibility" M d 33 (ω = 0) = 0 so the absorption is zero.…”

Section: Double λ Configurationmentioning

confidence: 76%

See 1 more Smart Citation

Light Propagation in Optically Dressed Media

Raczyński¹,

Zaremba²,

Zielińska-Kaniasty³

2013

Open Systems, Entanglement and Quantum Optics

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Section: Double λ Configurationmentioning

confidence: 76%

“…(see Figure 8). One thus has to do with two Λ's: b − a − c and b − d − c. Light propagation in a medium of such a configuration has been investigated in a number of papers [21][22][23][24][25]. It was shown in particular that an adiabatic propagation was possible only for such pulses thatform in some special cases.…”

Section: Double λ Configurationmentioning

confidence: 99%

Light Propagation in Optically Dressed Media

Raczyński¹,

Zaremba²,

Zielińska-Kaniasty³

2013

Open Systems, Entanglement and Quantum Optics

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“…One reason for this are the various interfering excitation channels in such a system [22]. The double Λ system has been investigated in the content of amplification without inversion [23], phase sensitive laser cooling [24], the propagation of the pairs of optical pulses [25], optical phase conjugation [26], phase control of photoionization [27], phase control of electromagneti- …”

Section: Introductionmentioning

confidence: 99%

Light propagation through closed-loop atomic media beyond the multiphoton resonance condition

Mahmoudi

Evers

2006

Phys. Rev. A

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The light propagation of a probe field pulse in a four-level double-lambda type system driven by laser fields that form a closed interaction loop is studied. Due to the finite frequency width of the probe pulse, a time-independent analysis relying on the multiphoton resonance assumption is insufficient. Thus we apply a Floquet decomposition of the equations of motion to solve the timedependent problem beyond the multiphoton resonance condition. We find that the various Floquet components can be interpreted in terms of different scattering processes, and that the medium response oscillating in phase with the probe field in general is not phase-dependent. The phase dependence arises from a scattering of the coupling fields into the probe field mode at a frequency which in general differs from the probe field frequency. We thus conclude that in particular for short pulses with a large frequency width, inducing a closed loop interaction contour may not be advantageous, since otherwise the phase-dependent medium response may lead to a distortion of the pulse shape. Finally, using our time-dependent analysis, we demonstrate that both the closed-loop and the non-closed loop configuration allow for sub-and superluminal light propagation with small absorption or even gain. Further, we identify one of the coupling field Rabi frequencies as a control parameter that allows to conveniently switch between sub-and superluminal light propagation.

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“…Theoretically, it has been proved that the scheme can also be used as a quantum memory [4]- [9]. Then, EIT is extended to a double Λ configuration in which two couples of probe and control beams interact resonantly with a four-level atom [10]- [16]. In this model the two Λ subsystems share a common dark state and the quantum interference exists not only between the two lower states, but also between the two Λ channels.…”

mentioning

confidence: 99%

Manipulating synchronous optical signals with a double-Λ atomic ensemble

Cao

Wang

2005

Physics Letters A

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We analyze a double Λ atomic configuration interacting with two signal beams and two control beams. Because of the quantum interference between the two Λ channels, the four fields are phase-matched in electromagnetically induced transparency. Our numerical simulation shows that this system is able to manipulate synchronous optical signals, such as generation of optical twin signals, data correction, signal transfer and amplification in the atomic storage.PACS numbers: 42.50. Gy, 42.50.Hz, In modern communication, the transmission of information is usually carried out among multi-users which are organized in a network. The network consists of spatially separated nodes in which information can be stored and locally manipulated. Recently, experiments have demonstrated that optical signal can be stored in and then retrieved from an atomic ensemble[1] [2]. Light storage is implemented in a scheme of electromagnetically induced transparency (EIT) in which the atoms with a Λ configuration interact resonantly with both a signal beam and a control beam [3]. Theoretically, it has been proved that the scheme can also be used as a quantum memory[4]- [9]. Then, EIT is extended to a double Λ configuration in which two couples of probe and control beams interact resonantly with a four-level atom[10]- [16]. In this model the two Λ subsystems share a common dark state and the quantum interference exists not only between the two lower states, but also between the two Λ channels. Therefore, the EIT effect occurs only when the ratio of Rabi frequencies in each Λ channel is equal. Ref.[10] pointed out the lossless propagation of shape matched probe pulses interacting with one Λ channel when the strong identical pulses drive another Λ channel. However, the storage mechanism of optical pulse in the standard EIT interaction can be applied to double Λ configuration where two probe pulses can

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Transparency and dressing for optical pulse pairs through a double-Λ absorbing medium

Cited by 58 publications

References 3 publications

Light Propagation in Optically Dressed Media

Light Propagation in Optically Dressed Media

Light propagation through closed-loop atomic media beyond the multiphoton resonance condition

Manipulating synchronous optical signals with a double-Λ atomic ensemble

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