Papers
Measurement-induced state transitions across the fluxonium qubit landscape
Alex A. Chapple, Boris M. Varbanov, Alexander McDonald +1 more·Apr 9, 2026
Understanding the mechanisms that limit high-fidelity readout in circuit quantum electrodynamics is essential for its optimization. Multi-photon resonances are understood to be a limiting factor, causing population transfer from the computational sta...
Interaction-Mediated Non-Reciprocal Dynamics in Open Quantum Systems: From an Exactly Solvable Model to Generic Behavior
Pietro Borchia, Johannes Knolle, Andreas Nunnenkamp·Apr 8, 2026
Reservoir engineering has emerged as a powerful paradigm to realize non-reciprocal dynamics in open quantum many-body systems. Here, we show that density-density interactions can transfer bath-induced non-reciprocity between different degrees of free...
Rotation of the Transition Dipole in Single hBN Quantum Emitters via Vibronic Coupling
Serkan Paçal, Chanaprom Cholsuk, Mouli Hazra +4 more·Apr 8, 2026
The design of polarization-encoded quantum interfaces relies on the assumption that solid-state emitters possess static transition dipoles defined by the host lattice symmetry. Here, we demonstrate the vibronic breakdown of this static dipole approxi...
Physics-Informed Discrete-Event Simulation of Polarization-Encoded Quantum Networks
Abderrahim Amlou, Amar Abane, Cory M. Nunn +4 more·Apr 8, 2026
We extend the SeQUeNCe discrete-event simulator with physics-based models for polarization-encoded photonic quantum networks. Our framework integrates Jones-calculus optical components, including an SPDC Bell-state source, wave plates, and polarizing...
Tensor-network simulation of quantum transport in many-quantum-dot systems
Maximilian Streitberger, Marko J. Rančić·Apr 8, 2026
Transport through correlated nanoscale systems underpins the operation of quantum-dot and molecular-scale devices, yet accurate simulations of large open quantum systems remain computationally challenging as system size increases. Tensor-network meth...
Quantum MIMO Channel Modeling in Turbulent Free-Space Optical Links
Heyang Peng, Seid Koudia, Semih Oktay +2 more·Apr 8, 2026
Free-space optical (FSO) links supporting spatial multiplexing provide a natural physical realization of Quantum MIMO channels. We develop a first-principles model for Quantum MIMO channels derived directly from wave-optical propagation through three...
Attosecond quantum spectroscopy with entangled photon pairs
Zijian Lyu, Fengxiao Sun, Sili Yi +6 more·Apr 8, 2026
Bright squeezed light from parametric down-conversion in the infrared (IR) frequency range has triggered the emergence of attosecond quantum optics -- a new research field at the interface of quantum optics, strong-field physics, and attosecond techn...
Strong-field ionization of atoms with bright squeezed vacuum light
Haodong Liu, Xiaoxiao Long, Peizeng Li +2 more·Apr 8, 2026
Strong-field ionization is the cornerstone of attosecond physics, which has been extensively studied under coherent-state driving. Recently, the interface between attosecond physics and quantum optics has emerged as a new frontier. Yet, owing to expe...
Environment-Assisted Decoherence Suppression of Optical Non-Gaussian States
Akihiro Machinaga, Naoki Aritomi, Ryoga Sakurada +10 more·Apr 8, 2026
Optical loss is a common bottleneck in photonic quantum information processing, undermining the quantum advantage over classical approaches. Although several countermeasures, such as quantum distillation and error correction, have been proposed, they...
Dissipative Hamilton Jacobi Dynamics and the Emergence of Quantum Wave Mechanics
Naleli Jubert Matjelo·Apr 7, 2026
We develop a dissipative extension of classical mechanics based on a complex, and more generally quaternionic, action principle that endows every classical system with an intrinsic environment. Decomposing the action into conservative and divergence-...
Higher Nishimori Criticality and Exact Results at the Learning Transition of Deformed Toric Codes
Rushikesh A. Patil, Malte Pütz, Simon Trebst +2 more·Apr 7, 2026
We revisit a learning-induced tricritical point, at which three phases with strong, weak, and broken $Z_2$ symmetry meet, in the phase diagram of a deformed toric code wavefunction subjected to weak measurements. This setting is exactly dual to a cla...
Light-Induced Quantum Self-Trapping of Vibrational Excitons in an Optical Cavity
Vincent Pouthier, Saad Yalouz·Apr 7, 2026
In an optical cavity, strong light--matter coupling between excitons and photons has been widely reported as a way to enhance energy delocalization through spatially extended polaritonic states. In contrast, leveraging cavity-mediated light--matter e...
Pixel-Translation-Equivariant Quantum Convolutional Neural Networks via Fourier Multiplexers
Dmitry Chirkov, Igor Lobanov·Apr 7, 2026
Convolutional neural networks owe much of their success to hard-coding translation equivariance. Quantum convolutional neural networks (QCNNs) have been proposed as near-term quantum analogues, but the relevant notion of translation depends on the da...
Quantum phases in the interacting generalized Su-Schrieffer-Heeger model
Jing-Hua Niu, Jia-Lin Liu, Ke Wang +2 more·Apr 7, 2026
We investigate the quantum phases of a half-filled generalized interacting Su-Schrieffer-Heeger model with intracell, nearest-neighbor, and next-nearest-neighbor intercell hoppings, together with an on-site inter-sublattice interaction. In the nonint...
Quantum-Boosted Nonlinear Tunneling Driven by a Bright Squeezed Vacuum
Zhejun Jiang, Shengzhe Pan, Jianqi Chen +12 more·Apr 7, 2026
Nonlinear processes, mediated by multiphoton interactions rather than single-photon response, drive numerous fundamental phenomena and momentous applications in modern physics. Among these processes, tunneling ionization plays a pivotal role as it dr...
Coherence and Imaginarity as Resources in Quantum Circuit Complexity
Linlin Ye, Zhaoqi Wu, Nanrun Zhou·Apr 7, 2026
Quantum circuit complexity quantifies the minimal number of gates needed to realize a unitary transformation and plays a central role in quantum computation. In this work, we investigate the complexity of quantum circuits through coherence and imagin...
Decoherence-induced Multiphoton Interference
Yifan Du, Jiuyi Zhang, Daniel López Martínez +2 more·Apr 7, 2026
Decoherence is usually deemed detrimental to quantum information processing. Its control and minimization require significant costs and operating overheads, constituting a major hurdle to commercialize quantum technology. Yet, quantum mechanics provi...
Dynamics of Entanglement in Schwarzschild Black Holes
Fang Xie, Ying Yang, Tinggui Zhang +1 more·Apr 7, 2026
To characterize the effect of Hawking radiation induced by the quantum atmosphere beyond the event horizon on entanglement, we employ concurrence as the entanglement measure for a bipartite mixed state and investigate its evolution with Hawking tempe...
Modeling the non-Markovian Brownian motion of an optomechanical resonator
Aritra Ghosh, Malay Bandyopadhyay, M. Bhattacharya·Apr 6, 2026
We propose a globally-admissible phenomenological spectral density of the bath for the non-Markovian Brownian motion of an optomechanical resonator, motivated by the near-resonance experimental observation of a non-Ohmic spectrum in [Nat. Commun. 6, ...
Unsharp Measurement with Adaptive Gaussian POVMs for Quantum-Inspired Image Processing
Debashis Saikia, Bikash K. Behera, Mayukha Pal +1 more·Apr 6, 2026
We propose a quantum measurement-based framework for probabilistic transformation of grayscale images using adaptive positive operator-valued measures (POVMs). In contrast, to existing approaches that are largely centered around segmentation or thres...