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We demonstrate the existence of a non-local geometric phase in the intensity-intensity correlations of classical incoherent light, that is not seen in the lower order correlations. This two-photon Pancharatnam phase was observed and…

Reflection and transmission of electrons scattered by a rectangular potential step in the presence of an external magnetic field parallel to the electron beam is described with the use of the Dirac equation. It is shown that in addition to…

量子物理 · 物理学 2020-06-24 Wlodek Zawadzki , Pawel Pfeffer

The Hartman effect for the tunneling particle implies the independence of group delay time on the opaque barrier width, with superluminal velocities as a consequence. This effect is further examined on a quantum ring geometry in the…

介观与纳米尺度物理 · 物理学 2009-11-10 Swarnali Bandopadhyay , Raishma Krishnan , A. M. Jayannavar

We discuss the quantum mechanics of particles of arbitrary statistics on an infinite cylinder with and without a magnetic field perpendicular to the surface. In the presence of a magnetic field, the translational symmetry along the cylinder…

凝聚态物理 · 物理学 2009-10-22 Erik Westerberg , T. H. Hansson

We evaluate a zero-point quantum correction to a Belavin-Polyakov soliton in an isotropic 2D ferromagnet. By revising the scattering problem of quasi-particles by a soliton we show that it leads to the Aharonov-Bohm type of scattering,…

强关联电子 · 物理学 2007-05-23 Boris A. Ivanov , Denis D. Sheka , Vasilii V. Krivonos , Franz G. Mertens

We investigate the gravitational Aharonov-Bohm effect, by placing a quantum system in free-fall around a gravitating body {\it e.g.} a satellite orbiting the Earth. Since the system is in free-fall, by the equivalence principle, the quantum…

广义相对论与量子宇宙学 · 物理学 2024-03-27 RY Chiao , NA Inan , M Scheibner , J Sharping , DA Singleton , ME Tobar

The physics in flat bands has emerged as an essential field in condensed matter physics where a plethora of phenomena can be unveiled, such as anomalous transport properties, superconductivity dominated by quantum geometry or exotic…

其他凝聚态物理 · 物理学 2026-03-02 Biplab Pal , Maxime Thumin , Georges Bouzerar

There is a consensus today that the the main lesson of the Aharonov-Bohm effect is that a picture of electromagnetism based on the local action of the field strengths is not possible in quantum mechanics. Contrary to this statement it is…

量子物理 · 物理学 2015-05-30 Lev Vaidman

The Schrodinger formalism of quantum mechanics is used to demonstrate the existence of the Aharonov-Bohm effect in momentum space and set-ups for experimentally demonstrating it are proposed for either free or ballistic electrons.

量子物理 · 物理学 2007-05-23 D. Dragoman , S. Bogdan

A device consisted of a set of circular rings, the centers of which lie on an axis, behaves like a solenoid when the ratio of its radius and distance between two successive rings is greater than one. As this ratio decreases, the device…

经典物理 · 物理学 2021-02-03 Y. Contoyiannis , M. Kampitakis

In type-I superconducting cylinders bulk superconductivity is destroyed above the first critical current. Below the second critical current the `type-I mixed state' displays fluctuation superconductivity which contributes to the total…

超导电性 · 物理学 2007-05-23 Catrin Ellenberger , Florian Gebhard , Wolfgang Bestgen

The Aharonov-Bohm (AB) effect was convincingly demonstrated using a micro-sized toroidal magnet but it is almost always explained using an infinitely-long solenoid or an infinitely-long flux line. The main reason for this is that the formal…

量子物理 · 物理学 2022-06-02 Ricardo Heras

The Fraunhofer diffraction of quantum particles from materials with sharp electron-density edges or symmetric bond structures is ubiquitous. In contrast, diffraction from atoms with characteristic asymptotically-diffused electron…

The paraxial (parabolic) theory of a near forward scattering of a quantum charged particle by a static magnetic field is presented. From the paraxial solution to the Aharonov-Bohm scattering problem the transverse transfered momentum (the…

介观与纳米尺度物理 · 物理学 2009-10-31 Andrei Shelankov

The optical exciton Aharonov-Bohm effect, i. e. an oscillatory component in the energy of optically active (bright) states, is investigated in nanorings. It is shown that a small effective electron mass, strong confinement of the electron,…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Grochol , F. Grosse , R. Zimmermann

A single-mode microcavity with an embedded Aharonov-Bohm quantum ring, which is pierced by a magnetic flux and subjected to a lateral electric field, is studied theoretically. It is shown that external electric and magnetic fields provide…

介观与纳米尺度物理 · 物理学 2014-09-02 A. M. Alexeev , I. A. Shelykh , M. E. Portnoi

We study the Aharonov-Bohm (AB) effect in two-dimensional mesoscopic frame in hole systems. We show that differing from the AB effect in electron systems, due to the presence of both the heavy hole and the light hole, the conductances not…

介观与纳米尺度物理 · 物理学 2007-05-23 J. Zhou , M. W. Wu , M. Q. Weng

We demonstrate theoretically and experimentally a new electromagnetic lensing concept using the magnetic vector potential - in a region free of classical electromagnetic fields - via the Aharonov-Bohm effect. This toroid-shaped lens with…

仪器与探测器 · 物理学 2024-05-24 Makoto Tokoro Schreiber , Cathal Cassidy , Menour Saidani , Matthias Wolf

We analyze a Hanbury Brown Twiss geometry in which particles are injected from two independent sources into a mesoscopic electrical conductor. The set-up has the property that all partial waves end in different reservoirs without generating…

介观与纳米尺度物理 · 物理学 2009-11-10 P. Samuelsson , E. V. Sukhorukov , M. Buttiker

We show theoretically that the strong coupling of circularly polarized photons to an exciton in ring-like semiconductor nanostructures results in physical nonequivalence of clockwise and counterclockwise exciton rotations in the ring. As a…

介观与纳米尺度物理 · 物理学 2015-06-10 O. V. Kibis , H. Sigurdsson , I. A. Shelykh