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We study the current flow through semiconductor quantum rings. In high magnetic field the current is usually injected to the arm of the ring preferred by classical magnetic forces. However, for narrow magnetic field intervals that appear…

Mesoscale and Nanoscale Physics · Physics 2010-11-09 M. R. Poniedziałek , B. Szafran

Interferometry is an indispensable tool across all the natural sciences. Recently, a new type of interferometer based on phase-sensitive Fano resonances has been proposed and implemented. In these Fano interferometers, the two arms are…

Quantum Physics · Physics 2018-05-07 Fabian Lauble , Jörg Evers

We investigate the electron transport through a mesoscopic ring side-coupled with a quantum dot(QD) in the presence of Rashba spin-orbit(SO) interaction. It is shown that both the Fano resonance and the spin interference effects play…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Guo-Hui Ding , Bing Dong

We have observed asymmetric Fano resonances in the conductance of a single electron transistor resulting from interference between a resonant and a nonresonant path through the system. The resonant component shows all the features typical…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 J. Goeres , D. Goldhaber-Gordon , S. Heemeyer , M. A. Kastner , Hadas Shtrikman , D. Mahalu , U. Meirav

Fano resonance is believed to arise when a direct path interferes with a resonant path. We demonstrate that this is not true for chiral electronic transmission without additional direct paths. To address the Fano effect in chiral electronic…

Mesoscale and Nanoscale Physics · Physics 2024-11-12 Ai-Ying Ye , Zhao Yang Zeng

We investigate the role of quantum coherence in tunneling conductance, where quantum criticality turns out to suppress Fano resonance. Based on the nonequilibrium noncrossing approximation, we show that the linear tunneling conductance…

Strongly Correlated Electrons · Physics 2010-02-01 Minh-Tien Tran , Ki-Seok Kim

As the Fano effect is an interference phenomenon where tunneling paths compete for the electronic transport, it becomes a probe to catch fingerprints of Majorana fermions lying on condensed matter systems. In this work we benefit of this…

Mesoscale and Nanoscale Physics · Physics 2014-11-11 F. A. Dessotti , L. S. Ricco , M. de Souza , F. M. Souza , A. C. Seridonio

The Fano effect, which occurs through the quantum-mechanical cooperation between resonance and interference, can be observed in electron transport through a hybrid system of a quantum dot and an Aharonov-Bohm ring. While a clear correlation…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Kensuke Kobayashi , Hisashi Aikawa , Shingo Katsumoto , Yasuhiro Iye

We report a transport experiment on the Fano effect in a quantum connecting wire (QW) with a side-coupled quantum dot (QD). The Fano resonance occurs between the QD and the "T-shaped" junction in the wire, and the transport detects…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Kensuke Kobayashi , Hisashi Aikawa , Akira Sano , Shingo Katsumoto , Yasuhiro Iye

We present studies of the electron transport and circular currents induced by the bias voltage and the magnetic flux threading a ring of three quantum dots coupled with two electrodes. Quantum interference of electron waves passing through…

Mesoscale and Nanoscale Physics · Physics 2019-05-29 Bogdan R. Bułka , Jakub Łuczak

It is shown that electron-electron interactions lead to a novel quantum-interference contribution to non-equilibrium current noise in mesoscopic conductors. The corresponding noise spectrum is obtained in detail for diffusive systems. It is…

Mesoscale and Nanoscale Physics · Physics 2008-02-03 Felix von Oppen , Ady Stern

We present a general input-output formalism for the few-photon transport in multiple waveguide channels coupled to a local cavity. Using this formalism, we study the effect of Fano interference in two-photon quantum transport. We show that…

Quantum Physics · Physics 2016-10-26 Shanshan Xu , Shanhui Fan

Defects in semiconductors, traditionally seen as detrimental to electronic device performance, have emerged as potential assets in quantum technologies due to their unique quantum properties. This study investigates the interaction between…

Mesoscale and Nanoscale Physics · Physics 2024-07-19 Motoya Shinozaki , Takaya Abe , Kazuma Matsumura , Takumi Aizawa , Takashi Kumasaka , Tomohiro Otsuka

A critical aspect of quantum mechanics is the nonlocal nature of the wavefunction, a characteristic that may yield unexpected coupling of nominally-isolated systems. The capacity to detect this coupling can be vital in many situations,…

Mesoscale and Nanoscale Physics · Physics 2016-04-27 S. Xiao , Y. Yoon , Y. -H. Lee , J. P. Bird , Y. Ochiai , N. Aoki , J. L. Reno , J. Fransson

We investigate the effect of decoherence on Fano resonances in wave transmission through resonant scattering structures. We show that the Fano asymmetry parameter q follows, as a function of the strength of decoherence, trajectories in the…

Electronic transport through a quantum dot strongly coupled to electrodes is studied within a model with two conduction channels. It is shown that multiple scattering and interference of transmitted waves through both channels lead to Fano…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Bogdan R. Bulka , Piotr Stefanski

We present the results of local tunneling conductivity spatial distribution detailed theoretical investigations in vicinity of impurity atom for a wide range of applied bias voltage. We observed Fano resonance in tunneling conductivity…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 V. N. Mantsevich , N. S. Maslova

Theory of self induced resonances in asymmetric two-junction interferometer device is presented. In real devices it is impossible to have an ideal interferometer free of imperfections. Thus, we extended previous theoretical approaches…

Superconductivity · Physics 2009-11-13 T. P. Polak , E. Sarnelli

The electron transport through a quantum sphere with three one-dimensional wires attached to it is investigated. An explicit form for the transmission coefficient as a function of the electron energy is found from the first principles. The…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 V. A. Margulis , M. A. Pyataev

The interaction of mesoscopic interference devices with nonclassical electromagnetic fields is studied. The external quantum fields induce a phase factor on the electric charges. This phase factor, which is a generalization of the standard…

Quantum Physics · Physics 2007-05-23 D. I. Tsomokos , C. C. Chong , A. Vourdas
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