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We study a waveguide QED system with a rectangular waveguide and a two-level system (TLS) inside, where the transverse modes TMmn define the quantum channels of guided photons. It is discovered that the loss of photons in the TM11 channel…

量子物理 · 物理学 2014-06-18 Qiong Li , Lan Zhou , C. P. Sun

We report quantum interference effects in the electrical conductance of chemical vapor deposited graphene nanoconstrictions fabricated using feedback controlled electroburning. The observed multimode Fabry-Perot interferences can be…

Single particle resonances in quantum wires are generally Fano resonances. In case of Fano resonances, the scattering phase shift in some channels show sharp phase drops and that in the other channels do not. Phase shift in a particular…

介观与纳米尺度物理 · 物理学 2009-11-11 P. Singha Deo

We study the self interference effect of a resonator coupled with a bent waveguide at two separated ports. Such interference effects are shown to be similar for the cases of standing-wave and traveling-wave resonators, while in the system…

光学 · 物理学 2021-02-24 Lei Du , Zhihai Wang , Yong Li

We examine quantum interference effects due to absorption and emission from multiple atoms coupled to a waveguide and highlight the modifications they entail in regards to single-photon transport properties. A prominent upshot of these…

光学 · 物理学 2019-07-17 Debsuvra Mukhopadhyay , Girish S. Agarwal

We explore the electron dynamics of a system composed of double quantum dot embedded between metallic and superconducting leads in a T-shape geometry. In nanoscopic systems, where electron transfer between electrodes can be realized via…

介观与纳米尺度物理 · 物理学 2023-07-25 Jan Baranski , Magdalena Baranska , Tomasz Zienkiewicz , Konrad J. Kapcia

Control of nonlinear response of nanostructures via path interference effects, i.e., Fano resonances, has been studied extensively. In such studies, a frequency conversion process takes place near a hot spot. Here, we study the case where…

光学 · 物理学 2020-11-26 Zafer Artvin , Mehmet Günay , Alpan Bek , Mehmet Emre Taşgın

The Fano effect or Fano resonance with a characteristically asymmetric line shape originates from quantum interference between direct and indirect transition pathways in continuum-bound coupled systems, and is a ubiquitous phenomenon in…

量子物理 · 物理学 2019-02-13 Yuqing Li , Guosheng Feng , Jizhou Wu , Jie Ma , Bimalendu Deb , Arpita Pal , Liantuan Xiao , Suotang Jia

By means of the non-equilibrium Green function and equation of motion method, the electronic transport is theoretically studied through a parallel-coupled double quantum dots(DQD) in the presence of the on-dot Coulomb correlation, with an…

介观与纳米尺度物理 · 物理学 2016-08-16 Haizhou Lu , Rong Lü , Bang-fen Zhu

A periodically driven quantum system with avoided-level crossing experiences both non-adiabatic transitions and wave-function phase changes. These result in coherent interference fringes in the system's occupation probabilities. For qubits,…

介观与纳米尺度物理 · 物理学 2018-11-28 S. N. Shevchenko , A. I. Ryzhov , Franco Nori

A high degree of control over the structure and dynamics of domain patterns in nonequilibrium systems can be achieved by applying nonuniform external fields near parity breaking front bifurcations. An external field with a linear spatial…

patt-sol · 物理学 2009-10-28 A. Hagberg , E. Meron , I. Rubinstein , B. Zaltzman

We investigate the Fano-type spectroscopic lineshapes of the T-shape double quantum dot coupled between the conducting and superconducting electrodes and analyze their stability on a decoherence. Because of the proximity effect the quantum…

介观与纳米尺度物理 · 物理学 2012-06-01 J. Baranski , T. Domanski

We theoretically study the Fano-Kondo effect in a triple quantum dot (QD) system where two QDs constitute a two-level system and the other QD works in a detector with electrodes. We found that the Fano dip is clearly modulated by strongly…

强关联电子 · 物理学 2014-01-08 Tetsufumi Tanamoto , Yoshifumi Nishi

A route toward lineshape engineering of Fano resonances in photonic structures is theoretically proposed, which uses dynamic modulation of the refractive index of a microcavity. The method is exemplified by considering coupled-resonator…

光学 · 物理学 2016-01-15 Stefano Longhi

We consider resonances induced by symmetry protected bound states in the continuum in dielectric gratings with in-plane mirror symmetry. It is shown that the shape of the resonance in transmittance is controlled by two parameters in a…

Mechanism of the Fano resonances in planar metamaterials demonstrate based on the coupled two-oscillator model. We have described the optical spectrums like reflectance and transmittance near the resonances of bright mode (continuum mode)…

光学 · 物理学 2016-05-04 Song-Kum Song , Song-Jin Im

We have observed the Fano-Kondo anti-resonance in a quantum wire with a side-coupled quantum dot. In a weak coupling regime, dips due to the Fano effect appeared. As the coupling strength increased, conductance in the regions between the…

介观与纳米尺度物理 · 物理学 2009-11-10 Masahiro Sato , Hisashi Aikawa , Kensuke Kobayashi , Shingo Katsumoto , Yasuhiro Iye

Considering models with tilted linear and quadratic band touching dispersions, we analyze the effect of the transverse linear tilt on the transmission spectra through a harmonically driven potential well oriented longitudinally. Employing…

介观与纳米尺度物理 · 物理学 2023-10-20 Anton Gregefalk , Annica Black-Schaffer , Tanay Nag

Symmetric Lorentzian and asymmetric Fano line shapes are fundamental spectroscopic signatures that quantify the structural and dynamical properties of nuclei, atoms, molecules, and solids. This study introduces a universal temporal-phase…

We report our studies of zero-frequency shot noise in tunneling through a parallel-coupled quantum dot interferometer by employing number-resolved quantum rate equations. We show that the combination of quantum interference effect between…

其他凝聚态物理 · 物理学 2015-06-25 Bing Dong , X. L. Lei