Phase-dependent nonlinear optics with double-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Λ</mml:mi></mml:math>atoms

Korsunsky, Eugeny; Kosachiov, D.

doi:10.1103/physreva.60.4996

Cited by 160 publications

(130 citation statements)

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“…It can be encountered, for instance, in (suitably driven) isotopes of alkali-earth atoms with zero nuclear spin [21]. Although the coherent dynamics of ♦ schemes is equivalent to that of double-Λ systems [9], the steady states of the two systems exhibit important differences due to the different relaxation processes [11,12].…”

Section: Fig 1: Electronic Transitions Of the ♦-Configurationmentioning

confidence: 99%

“…The four-photon detuning ∆ν results in a timedependent phase, the wave-vector mismatch ∆k in a position dependent phase, and ∆χ(z, t) comprises the relative dipole and field phases. In [11,12] it has been discussed how Θ(z, t) affects the dynamics and steady state of the atom. The latter exists for ∆ν = 0 and in the remainder of this article we assume ∆ν = 0, ∆k = 0, i.e., the atoms are driven at four-photon resonance and by copropagating laser fields, such that the wave vector mismatch is negligible.…”

Section: The Relative Phasementioning

confidence: 99%

“…Applications of closed-loop configurations to nonlinear optics have featured double-Λ systems where two stable or metastable states are -each-coupled to two common excited states. A rich variety of nonlinear optical phenomena has been predicted [11,13,14] and experimentally observed [2,5,6,15,16,17,18,19]. In [19], in particular, it has been shown experimentally that the properties of closed-loop configurations can be used to correlate electromagnetic fields with carrier frequency differences beyond the GHz regime.…”

Section: Introductionmentioning

confidence: 99%

“…In this configuration a set of atomic states is (quasi-) resonantly coupled by laser fields so that each state is connected to any other via two different paths of coherent photon-scattering. As a consequence, the relative phase between the transitions critically influences dynamics [9] and steady states [10,11,12]. Applications of closed-loop configurations to nonlinear optics have featured double-Λ systems where two stable or metastable states are -each-coupled to two common excited states.…”

Section: Introductionmentioning

confidence: 99%

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Phase-dependent light propagation in atomic vapors

et al. 2007

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Light propagation in an atomic medium whose coupled energy levels form a ♦-configuration exhibits a critical dependence on the input conditions. Depending on the relative phase of the input light fields, the response of the medium can be dramatically modified and switch from opaque to semi-transparent. These different types of behaviour are caused by the formation of coherences due to interference in the atomic excitations. Alkali-earth atoms with zero nuclear spin are ideal candidates for observing these phenomena which could offer new perspectives in control techniques in quantum electronics.

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Section: Fig 1: Electronic Transitions Of the ♦-Configurationmentioning

confidence: 99%

Section: The Relative Phasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phase-dependent light propagation in atomic vapors

et al. 2007

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“…Closed-loop quantum configurations [30,45,[52][53][54][55] represent a class of atom-light coupling schemes in which the driving fields acting on atoms build closed paths for the transitions between atomic levels. The interference between different paths makes the system sensitive to relative phases of the applied fields.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetically induced transparency and nonlinear pulse propagation in a combined tripod and Λ atom-light coupling scheme

Hamedi

Ruseckas

Juzeliūnas

2017

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. We consider propagation of a probe pulse in an atomic medium characterized by a combined tripod and Lambda (Λ) atom-light coupling scheme. The scheme involves three atomic ground states coupled to two excited states by five light fields. It is demonstrated that dark states can be formed for such an atomlight coupling. This is essential for formation of the electromagnetically induced transparency (EIT) and slow light. In the limiting cases the scheme reduces to conventional Λ-or N -type atom-light couplings providing the EIT or absorption, respectively. Thus the atomic system can experience a transition from the EIT to the absorption by changing the amplitudes or phases of control lasers. Subsequently the scheme is employed to analyze the nonlinear pulse propagation using the coupled Maxwell-Bloch equations. It is shown that generation of stable slow light optical solitons is possible in such a five-level combined tripod and Λ atomic system.

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