25 papers · ranked by Valyu relevance
Dutta, Shovan
This is a concise, pedagogical introduction to the dynamic field of open quantum systems governed by Markovian master equations. We focus on the mathematical and physical origins of the widely used Lindblad equation, its unraveling in terms of stochastic purestate trajectories and the corresponding continuous…
Qin-Sheng Zhu, Geng Chen, Lian-Hui Yu, Xiaodong Xing + 1 more
We present a channel-constrained Markovian quantum diffusion (CCMQD) model that prepares quantum states by rigorously framing the generative process within the dynamics of open quantum systems. Our model interprets the forward diffusion process as natural decoherence using quantum master equations, whereas the reverse…
Felix Govaers
We propose a gate-based quantum algorithm for the prediction step of Bayesian state estimation based on the Fokker-Planck equation on a discretized position-velocity state space. The probability density is encoded in the amplitudes of a quantum state, enabling a compact representation of high-dimensional distributions.…
Muhammad Waqas Haseeb, Mohamad Toutounji, Dennis Salahub
The role of non-Markovian quantum effects in biological processes is increasingly recognized, yet remains largely unexplored in virology. This study investigates the influence of quantum tunneling on SARS-CoV-2 infection dynamics, focusing on the interaction between the viral spike protein and the host ACE2 receptor.…
Ryota Nasu, Gota Tanaka, Asato Tsuchiya
Ryota Nasu,1, ∗ Gota Tanaka,2, † and Asato Tsuchiya1, 3, ‡ 1 Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan 2 Institute for Mathematical Informatics, Meiji Gakuin University, 1518 Kamikuracho, Totsuka-ku, Yokohama 244-8539, Japan 3 Department of Physics…
Yixiang Zhang, Xin Qiao, Luojia Wang, Yanyan He + 3 more
Quantum walks with one-dimensional translational symmetry are important for quantum algorithms, where the speed-up of the diffusion speed can be reached if long-range couplings are added. Our work studies a scheme of a ring under the strong resonant modulation that can support a discrete-time quantum walk including…
Ben Wang, Minghao Mi, Huangqiuchen Wang, Qian Xie + 1 more
Accurate phase estimation plays a pivotal role in quantum metrology, yet its precision is significantly affected by noise, particularly phase-diffusive noise caused by phase drift. To address this challenge, the joint estimation of phase and phase diffusion has emerged as an effective approach, transforming the problem…
Philipp Pfeffer, Peter Brearley, Sylvain Laizet, Jörg Schumacher
The mixing of scalar substances in fluid flows by stirring and diffusion is ubiquitous in natural flows, chemical engineering, and microfluidic drug delivery. Here, we present a spectral quantum algorithm for scalar mixing by solving the advection-diffusion equation in a quantum computational fluid dynamics framework.…
Xiao-Kan Guo
We study the semiclassical Ehrenfest trajectories in open quantum systems. We first derive in explicit form the Fokker-Planck equation that governs the time evolution of the mixing measure for a Gaussian mixture. Then, we embed the generalized Ehrenfest theorem recently obtained for open quantum systems into this…
Leonardo Ermann, Alexei D. Chepelianskii, Dima L. Shepelyansky, Todd Andrew Brun
The Boltzmann-Loschmidt dispute of 1876 questioned the possibility of a statistical irreversible description by time-reversible classical equations of motion of atoms. Here we show analytically and numerically that the quantum chaos diffusion of cold atoms, or ions, in a harmonic trap and pulsed optical lattice can be…
Authors not listed
Coupling excitons to quantized cavity photonic modes can significantly enhance the spatial and temporal range of excitonic transport. The formation of hybrid light-matter states, known as polaritons, plays a central role in this enhancement. Polaritons, owing to their photonic character, can greatly amplify coherent…
Carlo Danieli, Claudio Conti, Laura Pilozzi, Valentina Brosco
Non-Abelian gauge symmetries are cornerstones of modern theoretical physics, underlying fundamental interactions and the geometric structure of quantum mechanics. However, their potential to control quantum coherence, entanglement, and transport in engineered quantum systems remains to a large extent unexplored. In…
Alisha Budhathoki, Ganesh Pandey, Jonah Galeota-Sprung, Jan-Hendrik Spille
Single-molecule tracking measures the stochastic motion of individual biomolecules in the cellular environment. Statistical analysis of trajectory ensembles is required to gain insight into the biophysical nature of mobility states and molecular interactions that they reflect. Mobility states can be parameterized by a…
François Simon, Chris H. Wiggins, Lucien E. Weiss
Single-particle tracking (SPT) is a tool of growing importance which enables biologists to better understand the dynamics of protein interactions at the single-molecule level and in vivo. However, the stochastic nature of the motion of single molecules, the wide variety of types of motion that they can experience and…
Priya Chakraborty, Shyam Iyer, Richa Rikhy, Mithun K. Mitra + 1 more
The mechanisms underlying the scaling of the Bicoid morphogen gradient in Drosophila with the embryo size is not clearly understood. We propose a model with a spatially varying diffusion coefficient along the anterior-posterior axis, that is proportional to the nearly periodic spatial distribution of the…
Lionel Martellini, Michael Ridley
We analyze three distinct approaches to time of arrival (TOA) distributions for discrete quantum systems using a spin- $\frac{1}{2}$ particle in a constant magnetic field as a paradigmatic example. We argue that these distributions should not be regarded as competing predictions for the same notion of arrival time, but…
Mark I.R. Petalcorin, Mary Ann Ritzell Vega
Living systems exhibit extraordinary resilience, adaptability, and identity preservation despite continuous atomic turnover. Traditional physics explains this persistence through biochemical stability, but a deeper quantuminformational description remains elusive. Here, we introduce a theoretical framework where a…
Christos Papalitsas, Ioannis Mouratidis, Michail Patsakis, Evangelos Stogiannos + 2 more
The exponential growth of publicly available genomic data has created unprecedented opportunities for sequence-based discovery. Locating specific k-mers is fundamental to diverse applications, including metagenomic classification, pathogen and cancer detection, and variant calling yet efficient identification of…
Authors not listed
Molecular polaritons, the hybridization of excitonic states in molecules with photonic excitation inside a cavity, play an important role in fundamental quantum science and technology. Understanding the decoherence mechanism of molecular polaritons is among the most significant fundamental questions. We theoretically…
Authors not listed
Recent experiments demonstrated the possibilities of modifying ground-state chemical reaction rates by placing an ensemble of molecules in an optical microcavity. A strong collective, resonant coupling between the cavity mode and molecular vibrations forms vibration-polaritons. This regime is commonly referred to as…
Authors not listed
Atomistic simulations provide essential mechanistic insights into chemical processes, yet many important phenomena in chemistry and materials science occur on timescales that are inaccessible to molecular dynamics. Existing computational approaches force a choice between atomic resolution on relatively short timescales…
Authors not listed
Photoexcitation energy transfer between aromatic residues tryptophan, tyrosine, is the first step in triggering the intracellular responses after UV light absorption in photopro- tective organisms. At sufficiently large separations, F¨orster Resonance Energy Transfer (FRET) between aromatic residues takes place, the…
Authors not listed
We present an ab initio framework for simulating polariton transport dynamics based on the classical path approximation (CPA). The quantum dynamics of polariton transport involves simulating many electronic degrees of freedom—often numbering in the hundreds to thousands—making a fully ab initio treatment of the…
Junwoo Park, Nataliya Sokolovska, Clément Cabriel, Asaki Kobayashi + 4 more
Single-molecule tracking (SMT) in live cells reveals how biomolecules explore crowded intracellular environments, yet most tracking software assumes Brownian motion, an approximation that fails when anomalous diffusion dominates. This leads to biased trajectory reconstruction and loss of biophysical information…
Authors not listed
Hybridization of a molecular exciton with a quantized photon creates a polariton. Despite extensive experimental investigations, the apparent lifetime of the exciton-polariton is not well understood. We examined the steady-state population dynamics for a Holstein-Tavis-Cumming Hamiltonian to illuminate the long-term…