Papers
Engineering walk-off-induced orbital angular momentum spectrum in spontaneous parametric downconversion
Yang Xu, Robert W. Boyd·Mar 16, 2026
Spontaneous parametric downconversion (SPDC) has been considered as a reliable source of high- dimensional entangled states in orbital angular momentum (OAM) basis. In real-world experiments, the spatial walk-off of the pump often degrades the fideli...
Frequency-resolved N-photon correlations in the ultra-strong coupling regime
Wen Huang, Qian Bin, Ying Wu +1 more·Mar 15, 2026
Frequency-resolved photon emission is central to applications from quantum information encoding to high-resolution spectroscopy, and then studying their correlations is therefore essential for revealing the underlying emission pathways and multiphoto...
Emergent giant topological Hall effect in twisted Fe3GeTe2 metallic system
Hyuncheol Kim, Kai-Xuan Zhang, Yu-Hang Li +3 more·Mar 15, 2026
The topological Hall effect, driven by the exchange interaction between conduction electrons and topological magnetic textures such as skyrmions, is a powerful probe for investigating the topological properties of magnetic materials. Typically, this ...
Imaging Harmonic Generation of Magnons
Anthony J. D'Addario, Kwangyul Hu, Maciej W. Olszewski +4 more·Mar 14, 2026
This work combines theory and experiment to examine the mechanisms underlying the harmonic generation of magnons. We develop a nonlinear spin-wave framework that is directly analogous to harmonic generation in nonlinear optics, and combine it with sc...
Finite-Time Braiding Dynamics within Topological Nanowire Qubits
Adrian D. Scheppe, Michael V. Pak·Mar 14, 2026
Topological Quantum Computing has largely evolved towards a paradigm of manipulating edge localized Majorana within $p$-wave topological superconducting nanowires. To bridge the gap between physical qubit systems and quantum algorithms, we perform a ...
Quantum dial
Aashish Sah, Suman Kundu, Priyank Singh +3 more·Mar 13, 2026
Accurate control of quantum degrees of freedom is promising for sensing, communication, and computing, but building a useful quantum computer faces a central isolation-and-control challenge: qubits must remain well isolated from their environment to ...
Co2SeO3Cl2: Studies of Emerging Magnetoelectric Coupling in a Polar, Buckled Honeycomb Material
Faith O. Adeyemi, Xudong Huai, Mohamed Kandil +3 more·Mar 13, 2026
The development of magnetoelectric materials requires chemical design strategies that integrate structural polarity with magnetic lattices capable of supporting competing spin interactions. Here, we demonstrate such an approach in the polar, buckled ...
Bit-Vector Abstractions to Formally Verify Quantum Error Detection & Entanglement
Arun Govindankutty·Mar 13, 2026
As the number of qubits increases, quantum circuits become more complex and their state space grows rapidly. This makes functional verification challenging for conventional techniques. Ensuring correctness is especially critical for quantum error cor...
A Chip-Scale Transmitter Module for Real-Time Continuous-Variable QKD
Igor Servello, Martin Hauer, Moritz Baier +6 more·Mar 13, 2026
Continuous-variable quantum key distribution (CV-QKD) enables secure communication over standard telecom infrastructure, yet its scaling is stalled by bulky, discrete optical hardware. We address this bottleneck by demonstrating a real-time CV-QKD sy...
Superposed quantum evolutions across chaotic and regular regimes
Amit Anand, Anne-Catherine de la Hamette, Robert Mann +1 more·Mar 13, 2026
While the superposition of quantum evolutions is known to produce interference effects, the interference between evolutions with regular and chaotic classical limits remains largely unexplored. Here, we use a Mach-Zehnder interferometer to investigat...
On-Demand Correlated Errors in Superconducting Qubits from a Particle Accelerator
Thomas McJunkin, A. W. Hunt, Yenuel Jones-Alberty +9 more·Mar 13, 2026
Ionizing radiation is a known source of correlated errors in superconducting quantum processors, inhibiting the functionality of quantum error correction surface codes. High-energy photons and charged particles deposit pair-breaking energy into these...
Deep-Learning-Designed AlGaAs Interface Linking Trapped Ions to Telecom Quantum Networks
I. P. De Simeone, G. Maltese, V. Cambier +5 more·Mar 13, 2026
The realization of a scalable quantum internet requires efficient light-matter interfaces that map stationary qubits onto photonic carriers for long-distance transmission. A central challenge is the generation of entangled photons simultaneously comp...
Optimal Continuous- to Discrete-Variable Bipartite Entanglement Conversion
Pak-Tik Fong, Ruchir Tullu, Hoi-Kwan Lau·Mar 13, 2026
Discrete-variable (DV) entanglement is crucial for numerous quantum applications, yet its deterministic generation in many bosonic systems remains experimentally challenging. In contrast, continuous-variable (CV) entanglement can be produced efficien...
When Bob orbits Alice: entanglement harvesting in circular motion
F. Sobrero, M. S. Soares, N. F. Svaiter·Mar 12, 2026
We study radiative processes of two qubits coupled to a massless scalar field prepared in the Minkowski vacuum state. The analyze the effects of vacuum fluctuations in the generation of qubits' entangled states is performed. We assume one of the qubi...
Quantum-Secure-By-Construction (QSC): A Paradigm Shift For Post-Quantum Agentic Intelligence
Arit Kumar Bishwas, Mousumi Sen, Albert Nieto-Morales +1 more·Mar 12, 2026
As agentic artificial intelligence systems scale across globally distributed and long lived infrastructures, secure and policy compliant communication becomes a fundamental systems challenge. This challenge grows more serious in the quantum era, wher...
Frequency Comb Behavior of Time Crystals in an RF-Driven Dissipative Rydberg System
Dixith Manchaiah, William J. Watterson, Christopher L. Holloway·Mar 12, 2026
Driven nonlinear oscillators constitute a universal paradigm for understanding synchronization, frequency pulling, and frequency comb formation in nonequilibrium systems. Here, we realize such an emergent nonlinear oscillator in strongly interacting ...
Engineering near-unitary one-axis twisting evolution via a driven Tavis-Cummings model
Jinfeng Liu, Yan Mu, Lili Song +2 more·Mar 12, 2026
One-axis twisting (OAT) interaction is a pivotal resource for manipulating quantum states of atomic ensembles, enabling spin squeezing, atomic-cat-state generation, and weak-phase amplification. Current implementations of OAT dynamics predominantly r...
Many-Body Entanglement Properties of Finite Interacting Fermionic Hamiltonians
Irakli Giorgadze, Grayson Welch, Haixuan Huang +2 more·Mar 11, 2026
We analyze many-body entanglement in interacting fermionic systems by using the $M$-body reduced density matrix. We demonstrate that if a particle number conserving fermionic Hamiltonian contains only up to $M$-body interaction terms, then its $N$-pa...
Hysteretic squashed entanglement in many-body quantum systems
Siddhartha Das, Alexander Yosifov, Jinzhao Sun·Mar 10, 2026
Entanglement in many-body quantum systems is distributed across spatial regions, where its structure often dictates the information-processing capabilities of the state. Yet, characterizing the entanglement structure, especially for mixed states, rem...
Chip-Integrated Broadband Multi-Photon Source for Wavelength-Multiplexed Quantum Networks
Xiao-Xu Fang, Ling-Xuan Kong, He Lu·Mar 10, 2026
Quantum networks based on wavelength-multiplexed entanglement enable parallel distribution of quantum correlations, increasing channel capacity for secure communication and distributed quantum information processing. However, broadband integrated sou...