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Quantum superpositions and entanglement are at the heart of the quantum information science. There have been only a few investigations of these phenomena at the mesoscopic level, despite the fact that these systems are promising for quantum…

量子物理 · 物理学 2007-05-23 Sylvain Fasel , Matthaeus Halder , Nicolas Gisin , Hugo Zbinden

We study the quantum transport in double quantum dots (DQD) sandwiched between surfaces of topological insulator (TI) Bi$_{2}$Te$_{3}$, which possess strong spin-orbit coupling (SOC) and $^{d}$C$_{3v}$ double group symmetry. Different from…

介观与纳米尺度物理 · 物理学 2025-04-21 Yuan Hong , Zhen-Guo Fu , Zhou-Wei-Yu Chen , Feng Chi , Zhigang Wang , Wei Zhang , Ping Zhang

Edge magnetoplasmon is an emergent chiral bosonic mode promising for studying electronic quantum optics. While the plasmon transport has been investigated with various techniques for decades,its coupling to a mesoscopic device remained…

介观与纳米尺度物理 · 物理学 2024-07-17 Chaojing Lin , Ko Futamata , Takafumi Akiho , Koji Muraki , Toshimasa Fujisawa

The design of large-scale colloidal quantum dots (QDs) assemblies and the investigation of their interaction with their close environment are of great interest for improving QD-based optoelectronic devices' performances. Understanding the…

We develop a general dynamical theory for studying a single photon transport in a one-dimensional (1D) waveguide coupled to multiple emitters which can be either identical or non-identical. In this theory, both the effects of the waveguide…

量子物理 · 物理学 2016-11-30 Zeyang Liao , Hyunchul Nha , M. Suhail Zubairy

We investigate the single-photon propagation in the one-dimensional waveguide coupled to $N$ two-level atoms. For a waveguide coupled to $N$ distant atoms, the transparency can be induced by coherent interaction at resonance for an $even$…

量子物理 · 物理学 2013-04-04 Wei-Bin Yan , Heng Fan

We study the coherent single-photon scattering in a one-dimensional waveguide coupled to a giant artificial molecule consisting of two coupled giant atoms. Since each giant atom couples to the waveguide via two coupling points, the…

量子物理 · 物理学 2022-08-02 Xian-Li Yin , Yu-Hong Liu , Jin-Feng Huang , Jie-Qiao Liao

We study the dynamics of a single-photon pulse travelling through a linear qubit chain coupled to continuum modes in a one-dimensional (1D) photonic waveguide. We derive a time-dependent dynamical theory for qubit amplitudes and for…

量子物理 · 物理学 2024-02-08 Ya. S. Greenberg , O. A. Chuikin , A. A. Shtygashev , A. G. Moiseev

Correlation effects on electron transport through a system of T-shaped double-dots are investigated, for which only one of the dots is directly connected to the leads. We evaluate the local density of states and the conductance by means of…

介观与纳米尺度物理 · 物理学 2009-11-07 Yusuke Takazawa , Yoshiki Imai , Norio Kawakami

We study the sub-gap spectrum and the transport properties of a double quantum dot coupled to metallic and superconducting leads. The coupling of both quantum dots to the superconducting lead induces a non-local pairing in both quantum dots…

介观与纳米尺度物理 · 物理学 2020-10-28 G. Górski , K. Kucab

We proposed an experimentally feasible scheme of nano-plamonic switch and quantum router via the single self-assembled InGaAs/GaAs semiconductor quantum dot (SQD) with a V type three-level energy structure located between two silver…

光学 · 物理学 2019-06-12 Myong-Chol Ko , Nam-Chol Kim , Hyok Choe , Su-Ryon Ri , Chol-Won Ri

We report low-temperature transport measurements through a double quantum dot device in a configuration where one of the quantum dots is coupled directly to the source and drain electrodes, and a second (side-coupled) quantum dot interacts…

We investigate electronic transport through parallel double quantum dot(DQD) system with strong on-site Coulomb interaction and capacitive interdot coupling. By applying numerical renormalization group(NRG) method, the ground state of the…

介观与纳米尺度物理 · 物理学 2015-05-13 Guo-Hui Ding , Fei Ye , Bing Dong

The optical response of an artificial hybrid molecule system composed of two metallic nanoparticles (MNPs) and a semiconductor quantum dot (SQD) is investigated theoretically due to the plasmon-exciton-plasmon coupling effects on the…

Systems of quantum dots (QD) connected to leads exhibit periodic conductance peaks as a function of gate voltage arising from the Coulomb blockade effect \cite{review1,review2,review3}. Much effort goes into minimizing the size of QDs and…

介观与纳米尺度物理 · 物理学 2009-07-29 L. Bitton , R. Berkovits , A. Frydman

We present a study of the correlated transport regimes of a double quantum impurity system with mutual capacitive interactions. Such system can be implemented by a double quantum dot arrangement or by a quantum dot and nearby quantum point…

强关联电子 · 物理学 2015-06-19 David A. Ruiz-Tijerina , E. Vernek , Sergio E. Ulloa

We study transport through a double quantum dot system in which each quantum dot is coupled to a phonon mode. Such a system can be realized, e.g., using a suspended carbon nanotube. We find that the interplay between strong electron-phonon…

介观与纳米尺度物理 · 物理学 2013-11-26 Stefan Walter , Björn Trauzettel , Thomas L. Schmidt

We investigate the quantum entanglement between two quantum dots in a plasmonic waveguide with near-zero mode index, considering the dependence of concurrence on interdot distance, quantum dot-waveguide frequency detuning and coupling…

光学 · 物理学 2013-10-14 Xing Ri Jin , Lei Sun , Xiaodong Yang , Jie Gao

The rapid emergence of flying qubits in graphene and other low-dimensional conductors is pushing quantum electronics into an ultrafast regime where conventional transport theories no longer apply. In these systems, single-electron wave…

介观与纳米尺度物理 · 物理学 2026-03-23 D. C. Glattli , P. Roulleau

We propose a method that enables strong, coherent coupling between individual optical emitters and electromagnetic excitations in conducting nano-structures. The excitations are optical plasmons that can be localized to sub-wavelength…

量子物理 · 物理学 2009-11-13 D. E. Chang , A. S. Sorensen , P. R. Hemmer , M. D. Lukin