Generation of even harmonics in coupled quantum dots

Guo, Shi-Fang; Duan, Suqing; Chu, Weidong; Zhang, Wei

doi:10.1103/physreva.84.015803

Cited by 4 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was also observed the emission of circularly polarized harmonics from rotating current states irradiated by linearly polarized fields [19]. Finally, HHG in the THz range has been studied in mesoscopic rings with a localized impurity [23], and even harmonics production have been investigated in coupled quantum dots [24,25].…”

Section: Introductionmentioning

confidence: 97%

Laser driven structured quantum rings

Castiglia¹,

Corso²,

Giovannini³

et al. 2015

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

View full text Add to dashboard Cite

In this work we study harmonic emission from structured quantum rings (SQRs). In SQRs, electrons trapped in two-dimensional structures are further confined by an external potential composed of N scattering centers arranged on a circle. We build a suitable one-dimensional model Hamiltonian describing this class of systems and analytically solve the associated Schödinger equation. We find that the solution can be expressed in terms of Mathieu functions and focus on the specific case of N = 6. By exactly solving the time-dependent Schödinger equation, we then show how the harmonic response to linearly polarized lasers strongly depends on the ring physical parameters. The results illustrate how the additional degrees of freedom introduced by these parameters, provide important handles to control the emitted spectrum that in some cases extends into the XUV region.

show abstract

Section: Introductionmentioning

confidence: 97%

Laser driven structured quantum rings

Castiglia¹,

Corso²,

Giovannini³

et al. 2015

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

View full text Add to dashboard Cite

show abstract

A nuclear physics program at the Rare Isotope Beams Accelerator Facility in Korea

Moon

2014

AIP Advances

View full text Add to dashboard Cite

This paper outlines the new physics possibilities that fall within the field of nuclear structure and astrophysics based on experiments with radioactive ion beams at the future Rare Isotope Beams Accelerator facility in Korea. This ambitious multi-beam facility has both an Isotope Separation On Line (ISOL) and fragmentation capability to produce rare isotopes beams (RIBs) and will be capable of producing and accelerating beams of wide range mass of nuclides with energies of a few to hundreds MeV per nucleon. The large dynamic range of reaccelerated RIBs will allow the optimization in each nuclear reaction case with respect to cross section and channel opening. The low energy RIBs around Coulomb barrier offer nuclear reactions such as elastic resonance scatterings, one or two particle transfers, Coulomb multiple-excitations, fusion-evaporations, and direct capture reactions for the study of the very neutron-rich and proton-rich nuclides. In contrast, the high energy RIBs produced by in-flight fragmentation with reaccelerated ions from the ISOL enable to explore the study of neutron drip lines in intermediate mass regions. The proposed studies aim at investigating the exotic nuclei near and beyond the nucleon drip lines, and to explore how nuclear many-body systems change in such extreme regions by addressing the following topics: the evolution of shell structure in areas of extreme proton to neutron imbalance; the study of the weak interaction in exotic decay schemes such as beta-delayed two-neutron or two-proton emission; the change of isospin symmetry in isobaric mirror nuclei at the drip lines; two protons or two neutrons radioactivity beyond the drip lines; the role of the continuum states including resonant states above the particle-decay threshold in exotic nuclei; and the effects of nuclear reaction rates triggered by the unbound proton-rich nuclei on nuclear astrophysical processes.

show abstract

Tunable optical activity in three-level nonchiral terahertz nanostructures under symmetrical incidence

Guo

2016

AIP Advances

View full text Add to dashboard Cite

We develop a theory of original quantum mechanism for finding strong optical activity quantum optical system in three-level non-chiral nanostructures, where symmetrical incidence (the propagation of the incident light is vertical to the plane of nanostructures) is considered. The theory is validated via both analytical and numerical analysis of specifically designed non-chiral coupled quantum dots models. In particular, by proper designing of the incidence, tunable terahertz wave polarized even in the opposite direction of the incidence is obtained. The effect could be explored for developing novel highly efficient terahertz polarization rotator and modulators, and may lead to the appearance of a new class of negative index terahertz nanostructures.

show abstract

Generation of even harmonics in coupled quantum dots

Cited by 4 publications

References 33 publications

Laser driven structured quantum rings

Laser driven structured quantum rings

A nuclear physics program at the Rare Isotope Beams Accelerator Facility in Korea

Tunable optical activity in three-level nonchiral terahertz nanostructures under symmetrical incidence

Contact Info

Product

Resources

About