Papers
Floquet Dissipative Phase Transitions
Alberto Mercurio, Vincenzo Macrì, Filippo Ferrari +2 more·Mar 13, 2026
Dissipative phase transitions (DPTs) are traditionally characterized through the spectral properties of a time-independent Liouvillian superoperator. However, this definition cannot be applied to time-periodic (Floquet) systems that cannot be exactly...
Onset of Ergodicity Across Scales on a Digital Quantum Processor
Faisal Alam, Marcos Crichigno, Elizabeth Crosson +7 more·Mar 12, 2026
Understanding how isolated quantum many-body systems thermalize remains a central question in modern physics. We study the onset of ergodicity in a two-dimensional disordered Heisenberg Floquet model using digital quantum simulation on IBM's Nighthaw...
Optimal control with flag qubits
Liang-Xu Xie, Lui Zuccherelli de Paula, Weizhou Cai +6 more·Mar 12, 2026
High-fidelity quantum operations are the cornerstone of fault-tolerant quantum computation. In open quantum systems, traditional optimal control only passively resists decoherence, leaving environment-induced uncertainty as a fundamental performance ...
Approximate Reduced Lindblad Dynamics via Algebraic and Adiabatic Methods
Tommaso Grigoletto, Alain Sarlette, Francesco Ticozzi +1 more·Mar 12, 2026
We present an algebraic framework for approximate model reduction of Markovian open quantum dynamics that guarantees complete positivity and trace preservation by construction. First, we show that projecting a Lindblad generator on its center manifol...
Lectures on Open Quantum Systems
Marco Merkli, Ángel Neira·Mar 12, 2026
These notes are a short introduction to the mathematical theory of open quantum systems. They are meant to serve as an entry point into a broad research area which has applications across the quantum sciences dealing with systems subjected to externa...
Quantum Many-Body Mpemba Effect through Resonances
Shion Yamashika, Ryusuke Hamazaki·Mar 12, 2026
Relaxation towards equilibrium is often assumed to be slower when a system starts farther from equilibrium, but this intuition fails in the Mpemba effect. Recent advances in controllable quantum platforms have enabled the exploration of its quantum a...
Quantum Reservoir Autoencoder for Blind Decryption: Two-Phase Protocol and Noise Resilience
Hikaru Wakaura, Taiki Tanimae·Mar 12, 2026
We instantiate the quantum reservoir autoencoder (QRA) with a noise-induced reservoir employing reset noise channels and address two open problems: noise-resilient reversibility and blind decryption. For a single-ciphertext protocol with 10 data qubi...
QuaNTUM: A Modular Quantum Communication Testbed for Scalable Fiber and Satellite Integration
Julien Chénedé, Tjorben Matthes, Josefine Krause +2 more·Mar 11, 2026
Secure communication is essential for modern society, from financial transactions to critical infrastructure. As classical encryption faces threats from advancing computational power, quantum communication provides a fundamentally secure alternative ...
Hall conductance in a weakly time-reversal invariant open system
Alexander Fagerlund, Christopher Ekman, Rodrigo Arouca·Mar 11, 2026
The quantum Hall effect and the quantum anomalous Hall effect both require time-reversal invariance to be broken. We show that non-equilibrium effects can cause Hall physics to arise even when the system is weakly time-reversal symmetric and no magne...
Realizing the Emery Model in Optical Lattices for Quantum Simulation of Cuprates and Nickelates
Hannah Lange, Liyang Qiu, Robin Groth +7 more·Mar 11, 2026
The microscopic origin of high-temperature superconductivity in cuprates remains one of the central open questions in condensed matter physics. Growing experimental and theoretical evidence suggests that the bare single-band Fermi-Hubbard model may n...
Hybridlane: A Software Development Kit for Hybrid Continuous-Discrete Variable Quantum Computing
Jim Furches, Timothy J. Stavenger, Carlos Ortiz Marrero·Mar 11, 2026
Hybrid quantum computing systems that combine discrete-variable qubits with continuous-variable qumodes offer promising advantages for quantum simulation, error correction, and sensing applications. However, existing quantum software frameworks lack ...
Open quantum systems beyond equilibrium: Lindblad equation and path integral molecular dynamics
Benedikt M. Reible, Somayeh Ahmadkhani, Luigi Delle Site·Mar 11, 2026
The Lindblad equation determines the time evolution of the density operator of open quantum systems. While valid for any system size, its use is, in practice, restricted to prototype/surrogate models with the aim of tackling specific aspects of the o...
Dissipation- versus Chaos-Induced Relaxation in Non-Markovian Quantum Many-Body Systems
Gabriel Almeida, Pedro Ribeiro, Masudul Haque +1 more·Mar 11, 2026
In interacting quantum many-body systems, relaxation toward equilibrium reflects a competition between internal chaotic dynamics and environmental dissipation. While conventional Markovian baths typically produce exponential decay, non-Markovian diss...
Graph Symmetry Organizes Exceptional Dynamics in Open Quantum Systems
Eric R. Bittner, Bhavay Tyagi, Kevin E. Bassler·Mar 11, 2026
Exceptional points (EPs), indicative of parity-time (PT) symmetry breaking, play a central role in non-Hermitian physics, yet most studies begin from deliberately engineered effective Hamiltonians whose parameters are tuned to exhibit exceptional beh...
Quantum-logic spectroscopy of forbidden vibrational transitions in single nitrogen molecular ions
Aleksandr Shlykov, Meissa L. Diouf, Richard Karl +3 more·Mar 11, 2026
Electric-dipole forbidden spectroscopic transitions in atoms form the basis of many advanced implementations of quantum computers, atomic clocks and quantum sensors. Coherently addressing such transitions in molecules which are among the most ubiquit...
Remote engineering of particle-like topologies to visualise entanglement dynamics
Fazilah Nothlawala, Bereneice Sephton, Pedro Ornelas +6 more·Mar 11, 2026
Skyrmions are a particle-like topology with a quantised skyrmion number, realised across condensed matter and photonic platforms alike. In quantum photonics, they constitute an emerging resource, promising robust quantum information encoding, so far ...
Coherence thermometry using multipartite quantum systems
Pranav Perumalsamy, Abhijit Mandal, Sovik Roy +1 more·Mar 11, 2026
We investigate, how finite temperature influences quantum coherence in multipartite open systems by analyzing a tripartite spin boson model subjected to non-Markovian dephasing. Two distinct environmental configurations are considered viz. independen...
Quantum entanglement provides a competitive advantage in adversarial games
Peiyong Wang, Kieran Hymas, James Quach·Mar 11, 2026
Whether uniquely quantum resources confer advantages in fully classical, competitive environments remains an open question. Competitive zero-sum reinforcement learning is particularly challenging, as success requires modelling dynamic interactions be...
Quantum batteries and time dilation
Esteban Martínez-Vargas·Mar 10, 2026
Is spacetime fundamental or can it be derived through quantum interactions? We propose here a way to describe time dilation solely from quantum mechanics. First we start by observing that any operational notion of time must imply some sort of regular...
Regularized Warm-Started Quantum Approximate Optimization and Conditions for Surpassing Classical Solvers on the Max-Cut Problem
Zichang He, Anuj Apte, Brandon Augustino +4 more·Mar 10, 2026
Demonstrating quantum heuristics that outperform strong classical solvers on large-scale optimization remains an open challenge. Here we introduce Regularized Warm-Started QAOA (RWS-QAOA), which initializes qubits by minimizing expected energy with a...