Papers
Coherence-Controlled Quantum Zeno Dynamics from Exact Reset Maps
Jishad Kumar, Achilleas Lazarides, Tapio Ala-Nissila·Mar 29, 2026
We develop an exact framework for quantum Zeno and anti-Zeno dynamics in a broad class of open systems, whose microscopic Hamiltonians are quadratic in bosonic or fermionic operators. We treat the environment through an exact stroboscopic resetting s...
Quantum Bit Error Rate Analysis in BB84 Quantum Key Distribution: Measurement, Statistical Estimation, and Eavesdropping Detection
Jaydeep Rath, Prajwal Panth, P. S. N. Bhaskar·Mar 28, 2026
Quantum Key Distribution (QKD) provides information-theoretic security by exploiting the principles of quantum mechanics. Among QKD protocols, the BB84 scheme remains the most widely adopted for both theoretical research and practical implementation....
Quantum gravitodiamagnetic interaction
Di Hao, Jiawei Hu, Hongwei Yu·Mar 28, 2026
In the framework of linearized quantum gravity, we investigate the quantum gravitational interaction induced by the gravitodiamagnetic coupling of two massive objects to vacuum fluctuations of the gravitational field. Starting from the Lagrangian of ...
Sticky and Magnetic: Evaluating Error Correction and User Adaptation in Gaze and Pinch Interaction
Jazmin Collins, Prasanthi Gurumurthy, Eric J. Gonzalez +1 more·Mar 27, 2026
The gaze-and-pinch framework offers a high-fidelity interaction modality for spatial computing in virtual reality (VR), yet it remains vulnerable to coordination errors--timing misalignments between gaze fixation and pinch gestures. These errors are ...
In-Situ Differential-Light-Shift Cancellation for Trapped-Atom Clocks
Jan Simon Haase, Alexander Fieguth, Igor Bröckel +2 more·Mar 27, 2026
Differential light shifts (DLS) induced by optical trapping fields fundamentally limit the stability and accuracy of trapped-atom microwave clocks. We demonstrate an in-situ method to cancel DLS by simultaneously interrogating multiple spatially sepa...
On the interpretation of Hahn echo measurements in electron spin resonance scanning tunneling microscopy
Paul Greule, Wantong Huang, Máté Stark +5 more·Mar 27, 2026
Electron spin resonance scanning tunneling microscopy (ESR-STM) has become a powerful tool for probing spin dynamics and coherence of individual atoms and molecules on surfaces. In this work, we perform Rabi oscillation and Hahn echo pulse protocols ...
Noise modelling of waveguide based squeezed light sources
Erik Anders Torsten Svanberg, Daniel Voigt, Vaishali Adya·Mar 27, 2026
Squeezed states of light are used for precision metrology and quantum-enhanced measurements, with applications spanning communication and sensing. State-of-the-art squeezed-light sources typically rely on optical cavities to achieve high, usable leve...
Multifractal Analysis of the Non-Hermitian Skin Effect: From Many-Body to Tree Models
Shu Hamanaka·Mar 27, 2026
The non-Hermitian skin effect is an anomalous localization phenomenon induced by nonreciprocal dissipation and has attracted considerable attention in recent years both theoretically and experimentally. In this article, we review the multifractal asp...
Geometric Phase Effect in Thermodynamic Properties and in the Imaginary-Time Multi-Electronic-State Path Integral Formulation
Yu Zhai, Youhao Shang, Jian Liu·Mar 27, 2026
The geometric phase (GP) is a fundamental quantum effect arising from conical intersections (CIs), with profound consequences for vibronic energy levels. Standard imaginary-time path integral molecular dynamics (PIMD) based on the Born-Oppenheimer ap...
Structured-Light Magnetometry in a Coherently Controlled Atomic Medium
Parkhi Bhardwaj, Shubhrangshu Dasgupta·Mar 26, 2026
A structured-light-based approach for detecting magneto-optical rotation is presented, in which polarization rotation is mapped onto a directly observable spatial degree of freedom. A radially polarized Laguerre-Gaussian beam interacts with cold $^{8...
Nonperturbative Resummation of Divergent Time-Local Generators
Dragomir Davidovic·Mar 26, 2026
Time-local generators of open quantum systems are generically divergent at long times, even though the reduced dynamics remains regular. We construct, by analytic continuation, nonperturbative dynamical maps consistent with these generators. For the ...
Mass-correction-induced enhancement of quantum correlations even beyond entanglement in the $e^{+}e^{-} \rightarrow J/ψ\rightarrow Λ(pπ^{-}) \barΛ(\bar{p}π^{+})$ process at the BESIII experiment under memory effects
Elhabib Jaloum, Omar Bachain, Mohamed Amazioug +4 more·Mar 26, 2026
In this work, we derive the bipartite density matrix for the $e^{+}e^{-} \rightarrow J/ψ\rightarrow Λ(pπ^{-}) \barΛ(\bar{p}π^{+})$ process at BESIII. We evaluate the impact of mass corrections and memory effects (within Markovian and non-Markovian re...
The Competence Shadow: Theory and Bounds of AI Assistance in Safety Engineering
Umair Siddique·Mar 26, 2026
As AI assistants become integrated into safety engineering workflows for Physical AI systems, a critical question emerges: does AI assistance improve safety analysis quality, or introduce systematic blind spots that surface only through post-deployme...
Measurement-induced non-commutativity in adaptive fermionic linear optics
Chenfeng Cao, Yifan Tang, Jens Eisert·Mar 26, 2026
Fermionic linear optics (FLO) with Gaussian resources is efficiently classically simulable. We show that this is no longer the case for such quantum circuits for fermions with internal degrees of freedom, equipped with mid-circuit number monitoring a...
Flagging the Clifford hierarchy:~Fault-tolerant logical $\fracπ{2^l}$ rotations via measuring circuit gauge operators of non-Cliffords
Shival Dasu, Ben Criger·Mar 25, 2026
We provide a recursively defined sequence of flag circuits which will detect logical errors induced by non-fault-tolerant $R_{\overline{Z}}(\fracπ{2^l})$ gates on CSS codes with a fault distance of two. As applications, we give a family of circuits w...
Energy-gap--controlled current oscillations in graphene under periodic driving
Hasna Chnafa, Clarence Cortes, David Laroze +1 more·Mar 25, 2026
We investigate the impact of an induced mass term $Δ$ on the current density in graphene subjected to a space- and time-dependent periodic potential $U(x,t)$. By solving the Dirac equation and deriving both the quasi-energy spectrum and the correspon...
Current Density Formulation of Nuclear Magnetic Shielding and Magnetizability Tensors in Paramagnetic Molecules in the Presence of Relativistic Effects
Francesco Ferdinando Summa, Sonia Coriani, Andre Severo Pereira Gomes·Mar 25, 2026
This work presents the computation of nuclear magnetic shielding and magnetizability tensors for paramagnetic molecules, using a magnetically induced current density framework to account for orbital and spin contributions. We demonstrate that the met...
Fluctuation-induced symmetry breaking in high harmonic generation for bicircular quantum light
Philipp Stammer, Camilo Granados, Javier Rivera-Dean·Mar 25, 2026
Symmetries are ubiquitous in physics and play a pivotal role in light-matter interactions, where they determine the selection rules governing allowed atomic transitions and define the associated conserved quantities. For the up-conversion process of ...
Time-frequency Talbot effect as Clifford operations on entangled time-frequency GKP states
Thomas Pousset, Romain Dalidet, Laurent Labonté +1 more·Mar 25, 2026
The Talbot effect -- a near-field diffraction phenomenon in which a periodic wavefront self-images at regular distances -- can be transposed to the time--frequency domain via the space--time duality between diffraction and dispersive broadening. We e...
Towards Schrödinger Cat States in the Second Harmonic Generation
Ranjit Singh, Leonid A. Barinov, Grigori G. Amosov +1 more·Mar 25, 2026
We investigate the quantum evolution of the pump field in second-harmonic generation under strong pump depletion. Starting from a coherent state, the pump develops a nonclassical phase-space structure resembling a Schrödinger cat state. This behavior...