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When the coupled electron-nuclear dynamics are subjected to strong Floquet driving, there is a strong breakdown of the Born-Oppenheimer approximation. In this article, we derive a Fokker-Planck equation to describe non-adiabatic molecular…

量子物理 · 物理学 2023-06-14 Vahid Mosallanejad , Jingqi Chen , Wenjie Dou

The coherence times achieved with continuous dynamical decoupling techniques are often limited by fluctuations in the driving amplitude. In this work, we use time-dependent phase-modulated continuous driving to increase the robustness…

量子物理 · 物理学 2017-08-22 D. Farfurnik , N. Aharon , I. Cohen , Y. Hovav , A. Retzker , N. Bar-Gill

Due to spin-orbit coupling, the adiabatic perturbation of an electron's orbital motion induced by a revolving external electric field lead to the electron spin-precession. The obtained results describe both transverse and longitudinal…

介观与纳米尺度物理 · 物理学 2009-11-10 Yuri Serebrennikov

An adiabatic time evolution of a closed quantum system connects eigenspaces of initial and final Hermitian Hamiltonians for slowly driven systems, or, unitary Floquet operators for slowly modulated driven systems. We show that the…

量子物理 · 物理学 2017-11-15 Atushi Tanaka , Taksu Cheon

The linear and nonlinear motions of a damped rigid planar pendulum, driven by vibrating its pivot sinusoidally, are reexamined. The pendulum is known to exhibit periodic, quasiperiodic, and chaotic motions. Floquet analysis identifies…

经典物理 · 物理学 2026-04-27 Rebeka Sarkar , Krishna Kumar , Sugata Pratik Khastgir

We investigate a class of periodically driven many-body systems that allows us to extend the phenomenon of prethermalization to the vicinity of isolated intermediate-to-low drive frequencies away from the high-frequency limit. We provide…

统计力学 · 物理学 2021-05-05 Christoph Fleckenstein , Marin Bukov

We consider the behavior of an interacting many particle system under slow external driving -- a many body generalization of the Landau-Zener paradigm. We find that a conspiracy of interactions and driving leads to physics profoundly…

其他凝聚态物理 · 物理学 2009-06-10 A. Altland , V. Gurarie , T. Kriecherbauer , A. Polkovnikov

The periodically driven O(N) model is studied near the critical line separating a disordered paramagnetic phase from a period doubled phase, the latter being an example of a Floquet time crystal. The time evolution of one-point and…

统计力学 · 物理学 2021-01-20 Muath Natsheh , Andrea Gambassi , Aditi Mitra

Transporting quantum information is an important prerequisite for quantum computers. We study how this can be done in Heisenberg-coupled spin networks using adiabatic control over the coupling strengths. We find that qudits can be…

量子物理 · 物理学 2019-01-23 Koen Groenland

The concept of `Floquet engineering' relies on an external periodic drive to realise novel, effectively static Hamiltonians. This technique is being explored in experimental platforms across physics, including ultracold atoms, laser-driven…

We propose a quantum Otto cycle in a two spin-$1/2$ anisotropic XY model in a transverse external magnetic field. We first characterize the parameter regime that the working medium operates as an engine in the adiabatic regime. Then, we…

量子物理 · 物理学 2021-03-03 Barış Çakmak

Electric polarization is a geometric phenomenon in solids and has a close relationship to the symmetry of the system. Here we propose a mechanism to dynamically induce and manipulate electric polarization by using an external light field.…

介观与纳米尺度物理 · 物理学 2021-12-24 Yuya Ikeda , Sota Kitamura , Takahiro Morimoto

We systematically characterize the dynamical evolution of time-parity (PT )-symmetric two-level systems with spin-dependent dissipations. If the control parameters of the gap are linearly tuned with time, the dynamical evolution can be…

量子物理 · 物理学 2026-01-21 Jian-Song Pan , Fan Wu

The use of the nuclear spins surrounding electron spin qubits as quantum registers and long-lived memories opens the way to new applications in quantum information and biological sensing. Hence, there is a need for generic and robust forms…

量子物理 · 物理学 2021-07-06 O. T. Whaites , J. Randall , T. H. Taminiau , T. S. Monteiro

Floquet theory is an indispensable tool for analysing periodically-driven quantum many-body systems. Although it does not universally extend to classical systems, some of its methodologies can be adopted in the presence of well-separated…

统计力学 · 物理学 2022-08-22 Thomas Veness , Kay Brandner

Exploiting the possibility of temporal variation of the winding number, we have prepared a SSH chain in its {\it stroboscopic} topological state, starting from the trivial one, by application of a periodic perturbation. The periodic…

介观与纳米尺度物理 · 物理学 2019-10-09 Souvik Bandyopadhyay , Amit Dutta

We show that a thermally isolated system driven across a quantum phase transition by a noisy control field exhibits anti-Kibble-Zurek behavior, whereby slower driving results in higher excitations. We characterize the density of excitations…

量子物理 · 物理学 2016-08-23 Anirban Dutta , Armin Rahmani , Adolfo del Campo

Spin rotations induced by an AC electric field in a two-electron double quantum dot are studied by an exact numerical solution of the time dependent Schroedinger equation in the context of recent electric dipole spin resonance experiments…

介观与纳米尺度物理 · 物理学 2012-09-24 M. P. Nowak , B. Szafran , F. M. Peeters

We study the dynamics of a localized spin-1/2 driven by a time-periodic magnetic field that undergoes a topological transition. Despite the strongly non-adiabatic effects dominating the spin dynamics, we find that the field's topology…

介观与纳米尺度物理 · 物理学 2017-06-08 A. A. Reynoso , J. P. Baltanás , H. Saarikoski , J. E. Vázquez-Lozano , J. Nitta , D. Frustaglia

We study quantum Floquet (periodically-driven) systems having continuous dynamical symmetry (CDS) consisting of a time translation and a unitary transformation on the Hilbert space. Unlike the discrete ones, the CDS strongly constrains the…

介观与纳米尺度物理 · 物理学 2024-07-19 Yukio Kaneko , Tatsuhiko N. Ikeda