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The method of restricted path integrals allows one to effectively consider continuous (prolonged in time) measurements of quantum systems. Monitoring of the system coordinates is such a continuous measurement that allows one to describe a…

chao-dyn · 物理学 2008-02-03 Michael Mensky

Recently, the phenomenon of quantum-classical correspondence breakdown was uncovered in optomechanics, where in the classical regime the system exhibits chaos but in the corresponding quantum regime the motion is regular - there appears to…

量子物理 · 物理学 2017-01-03 Guanglei Wang , Ying-Cheng Lai , Celso Grebogi

We address the problem of the classical deterministic dynamics of a particle in a periodic asymmetric potential of the ratchet type. We take into account the inertial term in order to understand the role of the chaotic dynamics in the…

chao-dyn · 物理学 2009-10-31 Jose L. Mateos

We describe a semiclassical method to calculate universal transport properties of chaotic cavities. While the energy-averaged conductance turns out governed by pairs of entrance-to-exit trajectories, the conductance variance, shot noise and…

介观与纳米尺度物理 · 物理学 2007-05-23 Sebastian Müller , Stefan Heusler , Petr Braun , Fritz Haake

We present a trajectory-based semiclassical calculation of the full counting statistics of quantum transport through chaotic cavities, in the regime of many open channels. Our method to obtain the $m$th moment of the density of transmission…

介观与纳米尺度物理 · 物理学 2008-10-03 G. Berkolaiko , J. M. Harrison , M. Novaes

The problem of the classical deterministic dynamics of a particle in a periodic asymmetric potential of the ratchet type is addressed. When the inertial term is taken into account, the dynamics can be chaotic and modify the transport…

凝聚态物理 · 物理学 2007-05-23 José L. Mateos

One of the principal goals of controlling classical chaotic dynamical systems is known as targeting, which is the very weakly perturbative process of using the system's extreme sensitivity to initial conditions in order to arrive at a…

混沌动力学 · 物理学 2023-01-25 Steven Tomsovic , Juan Diego Urbina , Klaus Richter

The analysis of diffusive energy spreading in quantized chaotic driven systems, leads to a universal paradigm for the emergence of a quantum anomaly. In the classical approximation a driven chaotic system exhibits stochastic-like diffusion…

量子物理 · 物理学 2010-07-20 Itamar Sela , James Aisenberg , Tsampikos Kottos , Doron Cohen

The effects of quenched disorder on the overdamped motion of a driven particle on a periodic, asymmetric potential is studied. While for the unperturbed potential the transport is due to a regular drift, the quenched disorder induces a…

软凝聚态物质 · 物理学 2009-10-31 M. N. Popescu , C. M. Arizmendi , A. L. Salas-Brito , F. Family

In generic Hamiltonian systems that are neither completely integrable nor fully chaotic, phase space consists of a mixture of regular and chaotic components. In classical dynamics, transitions between different invariant sets in phase space…

混沌动力学 · 物理学 2026-04-16 Akira Shudo

The interaction of an atom with an electromagnetic field is discussed in the presence of a time periodic external modulating force. It is explained that a control on atom by electromagnetic fields helps to design the quantum analog of…

量子物理 · 物理学 2009-11-13 Farhan Saif

We experimentally demonstrate a method for selecting small regions of phase space for kicked rotor quantum chaos experiments with cold atoms. Our technique uses quantum accelerator modes to selectively accelerate atomic wavepackets with…

原子物理 · 物理学 2009-11-07 M. B. d'Arcy , R. M. Godun , D. Cassettari , G. S. Summy

We present evidence that anomalous transport in the classical standard map results in strong enhancement of fluctuations in the localization length of quasienergy states in the corresponding quantum dynamics. This generic effect occurs even…

chao-dyn · 物理学 2009-10-31 Bala Sundaram , G. M. Zaslavsky

As an unusual type of anomalous diffusion behavior, superballistic transport is not well known but has been experimentally simulated recently. Quantum superballistic transport models to date are mainly based on connected sublattices which…

混沌动力学 · 物理学 2015-06-19 Qifang Zhao , Cord A. Muller , Jiangbin Gong

Electronic transport through chaotic quantum dots exhibits universal, system independent, properties, consistent with random matrix theory. The quantum transport can also be rooted, via the semiclassical approximation, in sums over the…

混沌动力学 · 物理学 2013-03-06 Gregory Berkolaiko , Jack Kuipers

We develop a statistical theory that describes quantum-mechanical scattering of a particle by a cavity when the geometry is such that the classical dynamics is chaotic. This picture is relevant to a variety of physical systems, ranging from…

介观与纳米尺度物理 · 物理学 2016-12-21 Pier A. Mello , Victor A. Gopar , J. A. Mendez-Bermudez

We show that the semiclassical approach to chaotic quantum transport in the presence of time-reversal symmetry can be described by a matrix model, i.e. a matrix integral whose perturbative expansion satisfies the semiclassical diagrammatic…

混沌动力学 · 物理学 2015-02-11 Marcel Novaes

Symmetrically evolving discrete quantum walk results in dynamic localization with zero mean displacement when the standard evolution operations are replaced by a temporal disorder evolution operation. In this work we show that the quantum…

量子物理 · 物理学 2017-08-30 Sagnik Chakraborty , Arpan Das , Arindam Mallick , C. M. Chandrashekar

The field of quantum simulation, which aims at using a tunable quantum system to simulate another, has been developing fast in the past years as an alternative to the all-purpose quantum computer. In particular, the use of temporal driving…

We examine whether the chaotic behavior of classical systems with a limited number of degrees of freedom can produce quantum dephasing, against the conventional idea that dephasing takes place only in large systems with a huge number of…

量子物理 · 物理学 2009-10-30 Hiromichi Nakazato , Mikio Namiki , Saverio Pascazio , Yoshiya Yamanaka