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We consider tests of short-distance modifications of gravity based on neutron interferometry in the scenario of large extra dimensions. Avoiding the non-computability problem in the calculation of the internal gravitational potential of…

广义相对论与量子宇宙学 · 物理学 2021-06-16 J. M. Rocha , F. Dahia

Non-Abelian quantum holonomies, i.e., unitary state changes solely induced by geometric properties of a quantum system, have been much under focus in the physics community as generalizations of the Abelian Berry phase. Apart from being a…

量子物理 · 物理学 2007-05-23 David Kult , Johan Åberg , Erik Sjöqvist

Two geometric phases of mixed quantum states, known as the interferometric phase and Uhlmann phase, are generalizations of the Berry phase of pure states. After reviewing the two geometric phases and examining their parallel-transport…

量子物理 · 物理学 2023-10-12 Xu-Yang Hou , Xin Wang , Zheng Zhou , Hao Guo , Chih-Chun Chien

The growth of crystal surfaces, under non-equilibrium conditions, involves the displacement of mono-atomic steps by atom diffusion and atom incorporations into steps. The time-evolution of the growing crystal surface is thus governed by a…

材料科学 · 物理学 2009-11-11 Thomas Frisch , Alberto Verga

We show that the phase of a spin-torque oscillator generically acquires a geometric contribution upon slow and cyclic variation of the parameters that govern its dynamics. As an example, we compute the geometric phase that results from a…

介观与纳米尺度物理 · 物理学 2020-04-15 Andreas Rückriegel , R. A. Duine

Quantum state manipulation with gates based on geometric phases acquired during cyclic operations promises inherent fault-tolerance and resilience to local fluctuations in the control parameters. Here we create a general non-Abelian and…

量子物理 · 物理学 2018-04-06 S. Danilin , A. Vepsäläinen , G. S. Paraoanu

We consider how to obtain a nontrivial two-qubit unitary transformation purely based on geometric phases of two spin-1/2's with Ising-like interaction in a magnetic field with a static z-component and a rotating xy-component. This is an…

量子物理 · 物理学 2010-08-20 Yu Shi

We show the presence of non-cyclic phases for oscillating neutrinos in the context of quantum field theory. Such phases carry information about the non-perturbative vacuum structure associated with the field mixing. By subtracting the…

高能物理 - 理论 · 物理学 2009-04-23 Massimo Blasone , Antonio Capolupo , Enrico Celeghini , Giuseppe Vitiello

Inspired by recent experiments with cold atoms in optical lattices, we consider a St\"uckelberg interferometer for a particle performing Bloch oscillations in a tight-binding model on the honeycomb lattice. The interferometer is made of two…

介观与纳米尺度物理 · 物理学 2015-12-30 Lih-King Lim , Jean-Noël Fuchs , Gilles Montambaux

We study the influence of geometry of quantum systems underlying space of states on its quantum many-body dynamics. We observe an interplay between dynamical and topological ingredients of quantum non-equilibrium dynamics revealed by the…

其他凝聚态物理 · 物理学 2012-03-26 Michael Tomka , Anatoli Polkovnikov , Vladimir Gritsev

An interferometric scheme to study Abelian geometric phase shift over the manifold SU(N)/SU(N-1) is presented.

量子物理 · 物理学 2007-05-23 Hubert de Guise , Barry C. Sanders , Stephen D. Bartlett , Weiping Zhang

We study the geometric phase acquired by an inertial atom whose trajectories are parallel to a reflecting boundary due its coupling to vacuum fluctuations of electromagnetic fields, by treating the atom as an open quantum system in a bath…

量子物理 · 物理学 2012-12-14 Hongwei Yu , Jiawei Hu

This paper concerns modeling of the evolution of intermittency region between two weakly miscible phases due to temporal and spatial variations of its characteristic length scale. First, the need of a more general description allowing for…

流体动力学 · 物理学 2020-09-29 Tomasz Wacławczyk

Many intracellular processes continue to oscillate during the cell cycle. Although it is not well-understood how they are affected by discontinuities in the cellular environment, the general assumption is that oscillations remain robust…

分子网络 · 定量生物学 2014-09-25 David S. Tourigny

Geometric phases play a crucial role in diverse fields. In chemistry they appear when a reaction path encircles an intersection between adiabatic potential energy surfaces and the molecular wavefunction experiences quantum-mechanical…

量子物理 · 物理学 2024-02-05 Rocco Martinazzo , Irene Burghardt

This publication presents a novel interferometric method for the simultaneous spatially resolved analysis of an object under test regarding the phase transmission function and the magnitude and orientation of dichroism. Analogous to the…

光学 · 物理学 2018-12-12 Sergej Rothau , Xiao Rao , Norbert Lindlein

We introduce a connection between entanglement induced by interaction and geometric phases acquired by a composite quantum spin system. We begin by analyzing the evaluation of cyclic (Aharonov-Anandan) and non-cyclic (Mukunda-Simon)…

量子物理 · 物理学 2011-05-03 C. S. Castro , M. S. Sarandy

The nonadiabatic holonomic quantum computation based on the geometric phase is robust against the built-in noise and decoherence. In this work, we theoretically propose a scheme to realize nonadiabatic holonomic quantum gates in a surface…

量子物理 · 物理学 2024-05-07 Jun Wang , Wan-Ting He , Hai-Bo Wang , Qing Ai

The geometric and open path phases of a four-state system subject to time varying cyclic potentials are computed from the Schr\"{o}dinger equation. Fast oscillations are found in the non-adiabatic case. For parameter values such that the…

无序系统与神经网络 · 物理学 2016-08-31 Asher Yahalom , Robert Englman

For a T-periodic non-Hermitian Hamiltonian H(t), we construct a class of adiabatic cyclic states of period T which are not eigenstates of the initial Hamiltonian H(0). We show that the corresponding adiabatic geometric phase angles are real…

量子物理 · 物理学 2009-10-31 Ali Mostafazadeh