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We determine the Kirkwood-Dirac quasiprobability (KDQ) distribution associated to the stochastic instances of internal energy variations for the quantum system and environment particles in coherent Markovian collision models. In the case…

量子物理 · 物理学 2025-07-23 Marco Pezzutto , Gabriele De Chiara , Stefano Gherardini

Differing reaction rates of long-lived nuclear states can force the level occupations out of thermal equilibrium, causing calculations of overall rates which rely on thermal equilibrium to be inaccurate. Therefore, nucleosynthesis…

高能天体物理现象 · 物理学 2018-08-08 G. Wendell Misch , Surja K. Ghorui , Yang Sun

We investigate quantum dynamics of a generic model of light-matter interaction in the context of high impedance waveguides, focusing on the behavior of the emitted photonic states, in the framework of the spin-boson model Quantum quenches…

介观与纳米尺度物理 · 物理学 2016-03-30 Soumya Bera , Harold U. Baranger , Serge Florens

We present a scheme for the dissipative preparation of an entangled steady state of two superconducting qubits in a circuit QED setup. Combining resonator photon loss, a dissipative process already present in the setup, with an effective…

量子物理 · 物理学 2014-05-15 Florentin Reiter , L. Tornberg , Göran Johansson , Anders S. Sørensen

Photoisomerization in a system with multiple electronic states and anharmonic potential surfaces in a dissipative environment is investigated using a rigorous numerical method employing quantum hierarchical Fokker-Planck equations (QHFPE)…

化学物理 · 物理学 2019-03-22 Tatsushi Ikeda , Yoshitaka Tanimura

We analyse the evolution of a quantum oscillator in a finite temperature environment using the quantum state diffusion (QSD) picture. Following a treatment similar to that of reference [7] we identify stationary solutions of the…

量子物理 · 物理学 2009-10-28 Andreas Zoupas

A recombination reaction model for high-temperature chemical kinetics is derived from ab initio simulations data. A kinetic recombination rate model is derived using a recently developed ab initio state-specific dissociation model and the…

化学物理 · 物理学 2020-09-15 Narendra Singh , Thomas Schwartzentruber

In many biological situations, a species arriving from a remote source diffuses in a domain confined between two parallel surfaces until it finds a binding partner. Since such a geometric shape falls in between two- and three-dimensional…

化学物理 · 物理学 2019-11-05 Denis S. Grebenkov , Diego Krapf

The quantum kinetics of photons is studied directly in real time by implementing the dynamical renormalization group. In contrast to conventional approach, the dynamical renormalization group method consistently includes off-shell (energy…

高能物理 - 唯象学 · 物理学 2009-10-31 Shang-Yung Wang

The Quasi Steady-State (QSS) model of long-term dynamics relies on the idea of time-scale decomposition. Assuming that the fast variables are infinitely fast and are stable in the long-term, the QSS model replaces the differential equations…

系统与控制 · 计算机科学 2013-10-02 Xiaozhe Wang , Hsiao-Dong Chiang

Atoms and molecules often react at different rates depending on their internal quantum states. Thus, controlling which internal states are populated can be used to manipulate the reactivity and can lead to a more detailed understanding of…

We study the real time dynamics of a quantum system with potential barrier coupled to a heat-bath environment. Employing the path integral approach an evolution equation for the time dependent density matrix is derived. The time evolution…

量子物理 · 物理学 2007-05-23 Joachim Ankerhold , Hermann Grabert , Gert-Ludwig Ingold

Quantum thermal transport and two-photon statistics serve as two representative nonequilibrium features in circuit quantum electrodynamics systems. Here, we investigate quantum heat flow and two-photon correlation function at steady-state…

量子物理 · 物理学 2021-09-07 Zhe-Huan Chen , Han-Xin Che , Zhe-Kai Chen , Chen Wang , Jie Ren

We report here the experimental observation of a dynamical quantum phase transition in a strongly interacting open photonic system. The system studied, comprising a Jaynes-Cummings dimer realized on a superconducting circuit platform,…

量子物理 · 物理学 2016-04-07 James Raftery , Darius Sadri , Sebastian Schmidt , Hakan E. Türeci , Andrew A. Houck

Understanding the asymptotic behavior of reaction-diffusion (RD) systems is crucial for modeling processes ranging from species coexistence in ecology to biochemical interactions within cells. In this work, we analyze RD systems in which…

动力系统 · 数学 2025-02-18 Carlos Barajas , Jean-Jacques Slotine , Domitilla Del Vecchio

We show that quantum mechanical entanglement can prevail even in noisy open quantum systems at high temperature and far from thermodynamical equilibrium, despite the deteriorating effect of decoherence. The system consists of a number N of…

量子物理 · 物理学 2007-05-23 L. Hartmann , W. Dür , H. -J. Briegel

Revealing the role of quantum entanglement in charge-transport in the Photosystem II reaction center (PSII RC) is of great significance. In this work, we theoretically demonstrate that the robust quantum entanglement provides regulatory…

化学物理 · 物理学 2025-01-14 Ling-Fang Li , Shun-Cai Zhao , Lu-Xin Xu

Chemical reaction rates must increasingly be determined in systems that evolve under the control of external stimuli. In these systems, when a reactant population is induced to cross an energy barrier through forcing from a temporally…

化学物理 · 物理学 2015-05-01 Galen T. Craven , Thomas Bartsch , Rigoberto Hernandez

We study the non-equilibrium behavior of optically driven dissipative coupled resonator arrays. Assuming each resonator is coupled with a two-level system via a Jaynes-Cummings interaction, we calculate the many-body steady state behavior…

量子物理 · 物理学 2013-01-15 T. Grujic , S. R. Clark , D. G. Angelakis , D. Jaksch

We study the evolution of a two-state system that is monitored continuously but with interactions with the detector tuned so as to avoid the Zeno affect. The system is allowed to interact with a sequence of prepared probes. The…

量子物理 · 物理学 2023-04-12 Varun Dubey , Raphael Chetrite , Abhishek Dhar