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Globally-constrained classical fields provide a unexplored framework for modeling quantum phenomena, including apparent particle-like behavior. By allowing controllable constraints on unknown past fields, these models are retrocausal but…

量子物理 · 物理学 2018-07-04 Ken Wharton

Ultracold atoms provide an ideal system for the realization of quantum technologies, but also for the study of fundamental physical questions such as the emergence of decoherence and classicality in quantum many-body systems. Here, we study…

量子物理 · 物理学 2015-03-13 Holger Hennig , Dirk Witthaut , David K. Campbell

We analyze the dynamics of a system qubit interacting by means a sequence of pairwise collisions with an environment consisting of just two qubits. We show that the density operator of the qubits approaches a common time averaged…

量子物理 · 物理学 2007-06-13 Giuliano Benenti , G. Massimo Palma

The wave-particle duality is one of the most mysterious phenomena of the quantum theory, in this paper first it's studied the rise of the wave properties of matter from the theory of stochastic electrodynamics (SED), in which de Broglie's…

量子物理 · 物理学 2014-03-04 Cesar A. Díaz Hernández

A process-theoretic approach to electrodynamics based on persistent Kac-type stochastic processes is developed. Finite-velocity stochastic propagation is taken as primary, while relativistic wave equations arise as emergent descriptions…

量子物理 · 物理学 2026-05-26 Partha Ghose

The inadequacy of Li\'{e}nard-Wiechert potentials is demonstrated as one of the examples related to the inconsistency of the conventional classical electrodynamics. The insufficiency of the Faraday-Maxwell concept to describe the whole…

高能物理 - 理论 · 物理学 2009-10-28 Andrew E. Chubykalo , Roman Smirnov-Rueda

The quantum-classical correspondence for dynamics of the nonlinear classically chaotic systems is analysed. The problem of quantum chaos consists of two parts: the quasiclassical quantisation of the chaotic systems and attempts to…

量子物理 · 物理学 2008-02-03 B. Kaulakys

The coherent interaction between a two-level system and electromagnetic fields serves as a foundation for fundamental quantum physics and modern photonic quantum technology. A profound example is resonance fluorescence, where the…

This article is part of a series of articles trying to establish the concept Molecular Field. The theory that induced us to introduce this novel concept is based on the Born-Huang expansion as applied to the Schroedinger equation that…

化学物理 · 物理学 2018-03-14 Michael Baer

We define and investigate, via numerical analysis, a one dimensional toy-model of a cloud chamber. An energetic quantum particle, whose initial state is a superposition of two identical wave packets with opposite average momentum, interacts…

量子物理 · 物理学 2023-07-19 R. Carlone , R. Figari , C. Negulescu

An exact analogy of electromagnetic fields and particles can be found in continuum mechanics of a turbulent perfect fluid with voids. Deviations of the turbulence from a homogeneous isotropic state correspond to electromagnetic fields: with…

综合物理 · 物理学 2022-03-02 Valery P. Dmitriyev

Motivated by recent developments of hydrodynamical quantum mechanical analogs [J. W. M. Bush, Annu. Rev. Fluid Mech. 47, 269-292 (2015)] we provide a relativistic model for a classical particle coupled to a scalar wave-field through a…

量子物理 · 物理学 2021-10-28 Pierre Jamet , Aurélien Drezet

Selection of an ensemble of equally prepared quantum systems, based on measurements on it, is a basic step in quantum state purification. For an ensemble of single qubits, iterative application of selective dynamics has been shown to lead…

量子物理 · 物理学 2007-05-23 T. Kiss , I. Jex , G. Alber , S. Vymetal

The dynamics of a decohering two-level system driven by a suitable control Hamiltonian is studied. The control procedure is implemented as a sequence of radiofrequency pulses that repetitively flip the state of the system, a technique that…

量子物理 · 物理学 2009-10-31 Lorenza Viola , Seth Lloyd

Entanglement is the quintessential quantum mechanical phenomenon understood to lie at the heart of future quantum technologies and the subject of fundamental scientific investigations. Mixture, resulting from noise, is often an unwanted…

Obtaining the total wavefunction evolution of interacting quantum systems provides access to important properties, such as entanglement, shedding light on fundamental aspects, e.g. quantum energetics and thermodynamics, and guiding towards…

量子物理 · 物理学 2022-02-02 Maria Maffei , Patrice A. Camati , Alexia Auffèves

Classical Electrodynamics is not a consistent theory because of its field inadequate behaviour in the vicinity of their sources. Its problems with the electron equation of motion and with non-integrable singularity of the electron self…

高能物理 - 理论 · 物理学 2008-02-03 Manoelito M. de Souza

The evolution of two qubits coupled by a general nonlocal interaction is studied in two distinct regimes. In the first regime the purity of the individual qubits is interchanged through the entanglement shared by the two. We illustrate how…

量子物理 · 物理学 2007-05-23 Cesar A. Rodriguez , Anil Shaji , E. C. G. Sudarshan

In the NISQ era, where quantum information processing is hindered by the decoherence and dissipation of elementary quantum systems, developing new protocols to extend the lifetime of quantum states is of considerable practical and…

量子物理 · 物理学 2025-03-12 Colin Read , Eduardo Serrano-Ensástiga , John Martin

In classical mechanics, external constraints on the dynamical variables can be easily implemented within the Lagrangian formulation. Conversely, the extension of this idea to the quantum realm, which dates back to Dirac, has proven…

量子物理 · 物理学 2021-02-25 André M. Timpanaro , Sascha Wald , Fernando Semião , Gabriel T. Landi