High harmonic generation induced by permanent dipole moments

Calderón, Óscar G.; Gutiérrez-Castrejón, R.; Guerra, J. M.

doi:10.1109/3.737618

Cited by 27 publications

(33 citation statements)

References 19 publications

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“…The existence of nonzero PDMs has been experimentally observed in several systems [31][32][33][34][35][36][37]. Furthermore, the presence of PDMs considerably influences the optical response of a system [38][39][40] leading, for example, to changes in multiphoton resonant excitation [41][42][43], modifications of the saturation of absorption and dispersion [44], creation of second-harmonic generation [45] and correlated photon pairs [46], as well as the opening of new optical transitions [47][48][49]. The bichromatic excitation of quantum systems with PDMs has been studied in a wide range of quantum systems, including electron and nuclear spins [50,51], QDs [52,53], and superconducting qubits [54].…”

Section: Introductionmentioning

confidence: 99%

Optical and microwave control of resonance fluorescence and squeezing spectra in a polar molecule

et al. 2017

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A two-level quantum emitter with broken inversion symmetry simultaneously driven by an optical field and a microwave field that couples to the permanent dipole's moment is presented. We focus to a situation where the angular frequency of the microwave field is chosen such that it closely matches the Rabi frequency of the optical field, the so-called Rabi resonance condition. Using a series of unitary transformations we obtain an effective Hamiltonian in the double-dressed basis which results in easily solvable Bloch equations which allow us to derive analytical expressions for the spectrum of the scattered photons. We analyze the steady-state population inversion of the system which shows a distinctive behavior at the Rabi resonance with regard to an ordinary two-level nonpolar system. We show that saturation can be produced even in the case that the optical field is far detuned from the transition frequency, and we demonstrate that this behavior can be controlled through the intensity and the angular frequency of the microwave field. The spectral properties of the scattered photons are analyzed and manifest the emergence of a series of Mollow-like triplets which may be spectrally broadened or narrowed for proper values of the amplitude and/or frequency of the low-frequency field. We also analyze the phase-dependent spectrum which reveals that a significant enhancement or suppression of the squeezing at certain sidebands can be produced. These quantum phenomena are illustrated in a recently synthesized molecular complex with high nonlinear optical response although they can also occur in other quantum systems with broken inversion symmetry.

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Section: Introductionmentioning

confidence: 99%

Optical and microwave control of resonance fluorescence and squeezing spectra in a polar molecule

et al. 2017

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“…1). It should be emphasized that the frequency multiplication is the general property of systems with broken inversion symmetry and can be used for the high harmonic generation [12]. Amplitudes of harmonics of the triplets rapidly decrease with increasing n or m, while the singlet Ω amplitude depends on neither n nor m. Radiation of the dipole (9) in the vicinity of each resonance is characterized by its own Rabi frequency (8) decreasing with the resonance number m increase.…”

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confidence: 99%

Matter Coupling to Strong Electromagnetic Fields in Two-Level Quantum Systems with Broken Inversion Symmetry

et al. 2009

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We demonstrate theoretically the parametric oscillator behavior of a two-level quantum system with broken inversion symmetry exposed to a strong electromagnetic field. A multitude of resonance frequencies and additional harmonics in the scattered light spectrum as well as an altered Rabi frequency are predicted to be inherent to such systems. In particular, dipole radiation at the Rabi frequency appears to be possible. Since the Rabi frequency is controlled by the strength of the coupling electromagnetic field, the effect can serve for the frequency-tuned parametric amplification and generation of electromagnetic waves. Manifestation of the effect is discussed for III-nitride quantum dots with strong built-in electric field breaking the inversion symmetry. Terahertz emission from arrays of such quantum dots is shown to be experimentally observable.

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“…The turbulent nature of filamentation occurring in high Fresnel number lasers was carefully studied in a series of experiments [52][53][54][55][56][57][58] with CO 2 lasers and dye lasers. Irregular temporal behaviour was observed in local field measurements.…”

Section: Turbulent Photon Filamentationmentioning

confidence: 99%

“…Thus, in different vapour lasers [41][42][43][44][45], one has r f ≈ 0.01 cm. For the CO 2 laser and dye lasers, it was found [52][53][54][55][56][57][58] that r f ≈ 0.1 cm and r f ≈ 0.01 cm, respectively. All these data are in good agreement with formula (179).…”

Section: Turbulent Photon Filamentationmentioning

confidence: 99%

Coherent dynamics of radiating atomic systems in pseudospin representation

Yukalov¹

2014

Laser Phys.

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The aim of this review is twofold. First, a general approach is presented allowing for a unified description of dynamics in radiating systems of different nature. Both atomic systems as well as spin assemblies can be treated in the frame of the same mathematical method based on pseudospin (or spin) representation of evolution equations. The approach is applicable to all stages of radiation dynamics, including the most difficult initial quantum stage, where coherence is not yet developed. This makes it possible to study the process of coherent self-organization from the chaotic quantum stage. Second, the approach is illustrated by applying it for the description of several coherent phenomena. Different types of superradiance are characterized: pure superradiance, triggered superradiance, pulsing and punctuated superradiance. The theory is presented of such interesting effects as triggering dipolar waves, turbulent photon filamentation, collective liberation of light, pseudospin atomic squeezing, and operator entanglement production.

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High harmonic generation induced by permanent dipole moments

Cited by 27 publications

References 19 publications

Optical and microwave control of resonance fluorescence and squeezing spectra in a polar molecule

Optical and microwave control of resonance fluorescence and squeezing spectra in a polar molecule

Matter Coupling to Strong Electromagnetic Fields in Two-Level Quantum Systems with Broken Inversion Symmetry

Coherent dynamics of radiating atomic systems in pseudospin representation

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