Preserving Symmetry: Spontaneous Symmetry Breaking through DecoherenceSolids appear to have localised centres of mass, yet many-body quantum theory describes them using translationally symmetric models that preclude localisation. Conventionally, this is resolved…Sam Kuypers·Aug 4, 2026SaveLearn
Entanglement Distillation of some Rank-Five Symmetric NPT States in Two-Qutrit SystemsEntanglement distillation is a fundamental task in quantum information processing. In this work, we investigate the distillability properties of a class of two-qutrit symmetric NPT states of rank…Yuwei Lei, Zihua Song, Lin Chen et al.·Aug 4, 2026SaveLearn
Fidelity-Based Robustness Margins for Finite-Time Quantum ControlWe develop a structure-specific fidelity-threshold robustness margin for finite-dimensional closed quantum systems under piecewise-constant coherent control. A scalar physical parameter may perturb…S. P. O'Neil, F. C. Langbein, C. A. Weidner et al.·Aug 4, 2026SaveLearn
DAMPyF: a Python implementation of the DAMPF method for the simulation of open-system dynamicsDAMPyF is an open-source Python implementation of the dissipation-assisted matrix product factorization (DAMPF) method, a tensor-network-based approach for the numerically exact simulation of…Nicola Lorenzoni, Susana F. Huelga, Martin B. Plenio·Aug 4, 2026SaveLearn
Bimodal non-Gaussian photonic states from a single quantum emitter in a waveguideWe investigate the generation of deterministic and heralded non-Gaussian states of light, using a single two-level system coupled to a chiral waveguide. We study the case of a single two level system…Thomas Copie, Ofer Firstenberg, G. P. Teja et al.·Aug 4, 2026SaveLearn
Iterative linear quadratic regulator on SU(N) for multi-qubit gate synthesisIn quantum optimal control theory, gradient-based trajectory optimization techniques have proven versatile in designing multi-qubit quantum gates. Furthermore, incorporating the underlying Lie-group…Dirk Heimann, Felix Wiebe, Elie Mounzer et al.·Aug 4, 2026SaveLearn
Entangling Topological InvariantsAn isolated occupied multiplet may admit local tensor-product descriptions without a globally consistent subsystem structure. We characterize the obstruction by comparing the transition functions of…Kazuki Ikeda, Yaron Oz·Aug 4, 2026SaveLearn
Sample-half-inserted quantum interferometerQuantum technologies have been widely recognized as unprecedented opportunities for ultra-high precision metrology. As a celebrated example in modern quantum optics, the Hong-Ou-Mandel (HOM)…Wei Li, Tao Xie, Yu-Hang Luo et al.·Aug 4, 2026SaveLearn
Generation and Enhancement of Bipartite and Tripartite Entanglement in an Electro-Optomechanical Ring CavityThis study investigates the generation and enhancement of quantum entanglement in an electro-optomechanical ring cavity system. The setup integrates two Coulomb-coupled mechanical resonators, which…Fouad Essaadi, Yassine Oussarhan, Mohamed Ouhammou et al.·Aug 4, 2026SaveLearn
Observation of quantum nonclassicality without freedom of choice in a minimal causal networkQuantum causal networks enable tests of nonclassicality beyond Bell nonlocality while relaxing some physically unwarranted assumptions. By relaxing the freedom-of-choice and spacelike-separation…Ya Xiao, Yan-Xin Rong, Ran He et al.·Aug 4, 2026SaveLearn
Matrix Product Evolution: A Method for Simulating Quantum Circuits Using Tensor NetworksClassical simulation of quantum circuits is an essential tool in quantum information science, but its applicability is constrained by the exponential growth of the Hilbert space and the entanglement…Haruyuki Kawabe, Minoru Nagai, Tsuyoshi Okubo et al.·Aug 4, 2026SaveLearn
Suppressing Cavity Frequency Noise Using a Kerr NonlinearityResonance-frequency fluctuations can limit the sensitivity and stability of superconducting microwave cavities used for qubit readout, optomechanical displacement sensing, and magnetic flux…J. P. van Soest, S. Meilof, G. L. Bhai et al.·Aug 4, 2026SaveLearn
Mesoscopic Quantum Communication via Photon-Number MomentsMesoscopic optical states are a promising resource for quantum communication, combining robustness against losses with the preservation of genuine quantum features. Here, we propose a quantum…Gabriele Cenedese, Alex Pozzoli, Luca Razzoli et al.·Aug 4, 2026SaveLearn
On-chip Quantum Measurement of Squeezing Generated from a Silicon Nitride Micro-ring ResonatorIntegration of quantum optical technique on-chip is crucial for large scale applications of quantum technology, which were proven in a free space environment to be superior to the corresponding…Yuhang Lei, Chenfei Cui, Yue Li et al.·Aug 4, 2026SaveLearn
The geometry of absolute separability and other convex matrix properties from spectrumWe investigate the geometric structure of the set of spectra of bipartite absolute separable states (ASEPm,n) and absolute positive partial transpose states (APPTm,n),…Jennifer Ahiable, Naga Bhavya Teja Kothakonda, Andreas Winter·Aug 4, 2026SaveLearn
Protected measurements for protected superconducting qubitsProtected superconducting qubits such as the 0-π qubit promise to substantially suppress error rates, facilitating fault-tolerant quantum computing with fewer qubits. Measuring these qubits is…Xanda C Kolesnikow, Thomas B Smith, Andrew C Doherty·Aug 4, 2026SaveLearn
Harvest: Resource-Aware Quantum Compilation for Magic State ProtocolsFault-tolerant quantum processors based on topological codes execute programs through lattice surgery, where operations must be mapped, routed, and supplied with magic states across a 2D grid of…Jannik Pflieger, Aleksandra Świerkowska, Emmanouil Giortamis et al.·Aug 4, 2026SaveLearn
Single-molecule strong optomechanical regimes in SERS via hybrid plasmonic cavitiesWe identify enhanced strong coherent Surface-Enhanced Raman Scattering (SERS) interactions facilitated by hybridized metallo-dielectric cavities with a resonant fluorescent molecule. By illuminating…Miguel Á. Martínez-García, Johannes Feist, Diego Martín-Cano·Aug 4, 2026SaveLearn
Analysis of Superradiance-Based Quantum Metrology under Independent Markovian Pure DephasingRecently, a DC magnetometry protocol utilizing N-spin-ensemble superradiance was proposed. This method physically amplifies the acquired signal, suppressing estimation errors from measurement noise…Yasunari Sakuma, Yuichiro Matsuzaki, Hoi-Kwan Lau et al.·Aug 4, 2026SaveLearn
Factorization of Exclusive-Sum-Of-Products Expressions with Rectangle Covering to Reduce Quantum Circuit CostThe implementation of quantum circuits is currently very expensive, especially due to the usage of large Toffoli gates. Therefore, it is critical to optimize circuit costs by factoring expressions as…Audrey Hou, Lucia Zhang, Ali Al-Bayaty et al.·Aug 4, 2026SaveLearn
Characterizing pairwise swapping capabilities of dense coding channelsWe introduce a novel multipartite entanglement-assisted classical communication task, referred to as dense coding swapping, in which legitimate parties collaboratively swap the dense codeability from…Abhishek Muhuri, Nirman Ganguly, Aditi Sen De et al.·Aug 4, 2026SaveLearn
Typical Output States of Monitored Random Clifford Circuits: A Graph-Theoretic ApproachIn many-body physics, an explicit wavefunction often provides the most thorough understanding, yet for monitored random Clifford circuit it has remained missing. Here we develop a framework that…Yu-Xuan Zhang, Yu-Xiang Zhang·Aug 4, 2026SaveLearn
Correlating spin and optical properties of quantum emitters in hBNOptically addressable spin defects in hexagonal boron nitride (hBN) are well suited for near-surface quantum sensing. They offer bright, wavelength-tunable single-photon emission with high optically…Nika Teran, Benjamin Whitefield, Nicholas Sloane et al.·Aug 4, 2026SaveLearn
Heralded Free-Electron Writing of the Most Subradiant State in an Atomic ArrayThe most subradiant eigenstate of a finite subwavelength atomic chain in free space, protected by strongly suppressed radiative decay, offers a powerful resource for photon storage, quantum sensing,…Tong Shen, Zhexin Zhao, Meng Xiao·Aug 4, 2026SaveLearn
Physics-Informed Quantum Machine Learning with Hard Constraint Embedding for Nonlinear Differential Equations of the First OrderQuantum algorithms based on linear-system approaches for solving differential equations demand qubit and precision resources beyond near-term capabilities. To address these challenges, this work…Mengke Xu, Xi Li, Xiao Chen et al.·Aug 4, 2026SaveLearn