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Showing 9290 results for "deepak pathak" in Physics · Preprint
Physics Preprint PDF DOI

Size-Limited Room Temperature Single-Photon Emission from Sidewall-Treated Fractional Dimension InGaN Quantum Dots: Determined by Density-of-States-Corrected Ultrafast Carrier Dynamics and Improved Signal-to-Noise Ratio

Pratim K. Saha · 2026

Room-temperature single-photon emission (SPE) resulting from a biexciton-exciton cascaded decay is demonstrated for the first time from chemically and photoelectrochemically etched site-controlled In0…

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Physics Preprint PDF DOI

Neuronal arithmetic operators based on Ovonic threshold switches (OTS) for biologically inspired analog computing

Jingyeong Hwang, Jaesang Lee, Jiin Bang, Younghyun Lee, Unhyeon Kang, Seungmin Oh, Kyungmin Lee, Jaehyun Park, Seongsik Park, Hyun Jae Jang, Sangbum Kim, Min Hyuk Park, Suyoun Lee · 2026

Biological neurons perform arithmetic computations - including additive integration and divisive gain modulation - through synaptic conductance changes and shunting inhibition, enabling context-depend…

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Physics Preprint PDF DOI

Phase-Transition Induced Domain Evolution and Magnetization Dynamics in FePt/FeRh Bilayers for Efficient Heat-Assisted Magnetic Recording

Saroj K. Mishra, Y. Sasaki, S. Isogami, I. Suzuki, Keerthana P, J. Mohanty, Y. K. Takahashi · 2026

Achieving ultrahigh recording densities with low power consumption is a central challenge for next generation heat assisted magnetic recording (HAMR), as conventional L10 FePt media require intense la…

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Physics Preprint PDF DOI

Semiclassical Ehrenfest paths in open quantum systems

Xiao-Kan Guo · 2026

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 Gauss…

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Physics Preprint PDF DOI

Dispersive Properties of Plasma Diffraction Gratings: Towards Plasma-Based Laser Pulse Compression

Victor M. Perez-Ramirez, Michelle M. Wang, Ke Ou, Sida Cao, Devdigvijay Singh, Nicholas M. Fasano, Vedin Dewan, Andreas M. Giakas, Arunava Das, Isabelle Tigges-Green, Pierre Michel, Julia M. Mikhailova, Matthew R. Edwards · 2026

The standard architecture for a high-peak-power femtosecond laser is chirped pulse amplification using diffraction gratings for compression; the damage threshold of the compression gratings limits cur…

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Physics Preprint PDF DOI

Schwinger-Keldysh Path Integral for Gauge theories

Greg Kaplanek, Maria Mylova, Andrew J. Tolley · 2026

We develop the Schwinger-Keldysh path-integral formalism for open non-Abelian gauge theories that are gauge-fixed via the BRST method in covariant gauges. We focus on generic initial states, pure and …

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Physics Preprint PDF DOI

Fluctuations of path-dependent thermodynamic quantities in open quantum systems via two-point system-only measurements

Alessandra Colla, Andrea Smirne, Heinz-Peter Breuer, Bassano Vacchini · 2026

We propose a method to evaluate general thermodynamic fluctuations in open quantum systems, based on performing a two-point measurement scheme on the system using dynamics-dependent thermodynamic obse…

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Tracking visible pulsed laser annealing of Hf0.5Zr0.5O2 heterostructures with in situ transmission electron microscopy

Aida Amini, Shruti Verma, Katharina Kohlmann, Sebastian Obernberger, Jean-Christof Lamanque, Andreas Rudiger, Kenneth R. Beyerlein · 2026

Laser annealing offers a promising route to back end of the line fabrication of ferroelectric thin film transistors based on hafnium-zirconium oxide (HZO). Due to the wide band gap of this material, p…

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Physics Preprint PDF DOI

Hardware-Efficient Hamiltonian Simulation via Trotter-Initialized Variational Optimization with Native Placement

F. S. Luiz, P. N. Ferreira, M. C. de Oliveira · 2026

Compiling time-evolution operators of the form $U(t)=e^{-iHt}$ into hardware-native gate sequences is a central bottleneck for digital quantum simulation on noisy intermediate-scale quantum (NISQ) dev…

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Physics Preprint PDF DOI

Probabilistic Condition, Decision and Path Coverage of Circuit-based Quantum Programs

Daniel Fortunato, Jose Campos, Rui Abreu · 2026

Coverage criteria play a central role in assessing test adequacy in classical software, yet their effectiveness for quantum programs remains poorly understood and largely unexplored. In this paper, we…

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Physics Preprint PDF DOI

Impulse-driven capillary detachment

Dilip Kr. Maity, Sandip Dighe, Nilamani Sahoo, Tadd Truscott · 2026

Capillary interfaces subjected to impulsive forcing arise in many natural and technological systems, yet the pathway by which rapid substrate motion is converted into droplet detachment remains unclea…

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Physics Preprint PDF DOI

System-Level Design of Scalable Fluxonium Quantum Processors with Double-Transmon Couplers

Guo Xuan Chan, Wangwei Lan, Tenghui Wang, Xizheng Ma, Chunqing Deng, Lijing Jin · 2026

Fluxonium qubits combine long coherence times with strong anharmonicity, making them a promising platform for scalable superconducting quantum processors. Recent experiments have demonstrated high-fid…

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Physics Preprint PDF DOI

Reduced-order modeling of a viscoelastic turbulent jet with hybrid machine learning models

Christian Amor, Adrian Corrochano, Marco Edoardo Rosti, Soledad Le Clainche · 2026

Adding flexible polymers to a Newtonian solvent confers complex properties to the resulting solution. The additional complexity substantially increases the computational cost of numerical simulations,…

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Physics Preprint PDF DOI

Hardware-Efficient Quantum Optimization for Transportation Networks via Compressed Adiabatic Evolution

Talha Azfar, Ruimin Ke, Sean He, Cara Wang, Jose Holguin-Veras · 2026

Transportation systems such as urban logistics, vehicle routing, and infrastructure planning require solving large-scale combinatorial optimization problems under complex constraints. Problems such as…

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Physics Preprint PDF DOI

Sector-dominant graph-local drivers for path-window barrier Hamiltonians on the Boolean hypercube

Takiko Sasaki, Tetsuji Tokihiro · 2026

We study finite-size adiabatic state preparation on Boolean hypercubes using graph-local drivers built from sector/path coordinates related to monotone Gray-code representatives. The construction is n…

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Physics Preprint PDF DOI

Robust Metal-Insulator Transition Despite Surface Dead-Layer Growth in Sub-10-nm Cr-Doped V2O3 Nanocrystals

Yoichi Ishiwata, Ichidai Harada, Masaki Imamura, Kazutoshi Takahashi, Hirofumi Ishii, Masato Yoshimura, Nozomu Hiraoka, Yuji Inagaki, Kenta Akashi, Tatsuya Kawae, Tetsuya Kida, Masashi Nantoh · 2026

We investigated the size dependence of the metal-insulator transition (MIT) in Cr-doped V2O3 nanocrystals by photoemission spectroscopy using complementary probing depths, together with magnetic susce…

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Submicrometer focusing of isolated attosecond XUV pulses approaching 10$^{16}$ W/cm$^2$

Kotaro Imasaka, Dianhong Dong, Natsuki Kanda, Bing Xue, Satoru Egawa, Takuya Hosobata, Yutaka Yamagata, Yasuo Nabekawa, Eiji J. Takahashi · 2026

We demonstrate submicrometer focusing of isolated attosecond pulses (IAPs) in the extreme ultraviolet (XUV) region using a custom ellipsoidal mirror. The obtained focal spot sizes were verified using …

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Physics Preprint PDF DOI

Path integral for the closed superstring and the matrix model

Yuhma Asano · 2026

The IKKT matrix model, which is proposed as a non-perturbative formulation of superstring theory, has an issue typical of zero-dimensional theory -- ambiguity in the definition of its path integral. T…

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Physics Preprint PDF DOI

Entropic Trapping of Hard Spheres in Spherical Confinement

Praveen K. Bommineni, Junwei Wang, Nicolas Vogel, Michael Engel · 2026

Monodisperse spherical colloidal particles confined within emulsion droplets can crystallize into icosahedral clusters. Experimentally it was observed that a few large colloidal particles added as def…

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Optimal paths across potentials on scalar field space

Saskia Demulder, Dieter Lust, Carmine Montella, Thomas Raml · 2026

Motivated by the Swampland Distance Conjecture, we study distances in field space using the framework of Optimal Transport. The associated optimisation problem naturally leads to a notion of distance …

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