Papers
The Born Rule as the Unique Refinement-Stable Induced Weight on Robust Record Sectors
Marko Lela·Mar 24, 2026
This paper proves a conditional structural uniqueness theorem for induced weight on robust record sectors within an admissible Hilbert record layer. Its theorem target and additive carrier differ from those of the standard Born-rule routes: additivit...
Laser-induced creation of coherent V2 centers in bulk-grown silicon carbide
L. J. Feije, G. M. Timmer, Y. Hu +7 more·Mar 24, 2026
Solid-state spin defects are promising qubits for quantum network nodes. A key challenge towards larger networks is creating defects with high yield into nanophotonic devices, while maintaining good optical and spin properties. Here, we demonstrate t...
Boundary-sensitive non-Hermiticity of Floquet Hamiltonian: spectral transition and scale-free localization
Bo Li, He-Ran Wang, Fei Song·Mar 24, 2026
We report a novel mechanism of boundary-sensitive PT symmetry breaking in one-dimensional Floquet systems. By designing a time-periodic driving protocol, we realize a Floquet Hamiltonian that is Hermitian under periodic boundary conditions yet acquir...
Interference-induced state engineering and Hamiltonian control for noisy collective-spin metrology
Le Bin Ho, Vu Xuan Tung Duong, Nozomu Takahashi +1 more·Mar 24, 2026
Interference provides a fundamental mechanism for generating and manipulating entanglement in many-body quantum systems. Here, we develop an interference framework in which the nonlinear dynamics of collective spin-$\tfrac{1}{2}$ ensembles are mapped...
Boundary Floquet Control of Bulk non-Hermitian Systems
Yu-Min Hu, Yu-Bo Shi, Linhu Li +5 more·Mar 23, 2026
Non-Hermitian systems provide a powerful platform for engineering and controlling nonequilibrium phenomena beyond Hermitian settings, with the presence of non-Hermitian skin effect broadening the scope of dynamical control. Here, we develop a general...
Precision's arrow of time
Luis E. F. Foa Torres, G. Pappas, V. Achilleos +1 more·Mar 23, 2026
The arrow of time is usually attributed to two mechanisms: decoherence through environmental entanglement, and chaos through nonlinear dynamics. Here we demonstrate a third route, Precision-Induced Irreversibility (PIR), requiring neither. No entangl...
Robust Atom Interferometry with Double Bragg Diffraction
Rui Li·Mar 23, 2026
This thesis develops a general theoretical and numerical framework for achieving high-contrast atom interferometry based on double Bragg diffraction (DBD). While DBD offers intrinsic symmetry, reduced sensitivity to internal-state systematics, and su...
Non-Markovian renormalization of optomechanical exceptional points
Aritra Ghosh, M. Bhattacharya·Mar 23, 2026
We investigate how non-Markovian mechanical dissipation affects exceptional points in linearized optomechanical systems with red-sideband drive. For a chosen non-Ohmic mechanical bath, we derive analytical conditions for the memory-renormalized excep...
Hyperloss from coherent spatial-mode mixing in quantum-correlated networks
Stephan Grebien, Julian Gurs, Roman Schnabel +1 more·Mar 23, 2026
Quantum-correlated networks distribute quantum resources such as squeezed and entangled states. These states are central to modern quantum technology, including photonic quantum computing, quantum communications, non-destructive biological sensing an...
Non-Hermiticity induced thermal entanglement phase transition
Bikashkali Midya·Mar 23, 2026
Theoretical analysis of a prototypical two-qubit effective non-Hermitian system characterized by asymmetric Heisenberg $XY$ interactions in the absence of external magnetic fields demonstrates that maximal bipartite entanglement and quantum phase tra...
Materials Beyond Hamiltonian Limits -- Quantum Measurement as a Resource for Material Design
Jochen Mannhart·Mar 23, 2026
Recent studies have identified materials and devices whose behavior lies beyond the scope of conventional electronic-structure theory. Such theories are formulated entirely in terms of Hamiltonian evolution and therefore describe only unitary dynamic...
High-yield integration design of fixed-frequency superconducting qubit systems using siZZle-CZ gates
Kazuhisa Ogawa, Yutaka Tabuchi, Makoto Negoro·Mar 23, 2026
Fixed-frequency transmon qubits, characterized by simple architectures and long coherence times, are promising platforms for large-scale quantum computing. However, the rapidly increasing frequency collisions, which directly reduce the fabrication yi...
Geometric Quantum Mechanics in a Symplectic Framework: Metric-Affine Extensions and Deformed Quantum Dynamics
Hoshang Heydari·Mar 22, 2026
We present a geometric formulation of quantum mechanics based on the symplectic structure of the projective Hilbert space. Building upon the standard Kähler framework, we introduce an extension in which the symplectic structure is allowed to couple t...
Entangled photons from quantum-dot-cavity systems under non-Markovian decoherence by pulsed excitation
Katy Snow, Mauro Paternostro·Mar 21, 2026
Cascaded emission from the biexciton state of a quantum dot results in polarization entangled photon pairs. However, modelling this system becomes challenging when photon emission is cavity-mediated due to the large Hilbert space and non-Markovian na...
Collective Dynamics in Circuit Quantum Acoustodynamics with a Macroscopic Resonator
Libo Zhang, Chilong Liu, Guixu Xie +9 more·Mar 21, 2026
Collective dynamics in engineered quantum systems offer a unique and versatile platform for exploring how many-body correlations bridge microscopic entanglement and macroscopic behavior. In this work, we report collective Dicke dynamics of acoustic m...
The typicality of symmetry-induced entanglement
Christian Boudreault, Nicolas Levasseur·Mar 21, 2026
In the presence of a globally conserved charge $N$, a natural question is whether a given separable state can be separated into charge-conserving components. We dub this problem the Symmetric Separability Problem (SSP). On random states, the SSP is a...
Lamb-shift-induced switching of energy transfer in open quantum batteries
Liang Luo, Shun-Cai Zhao·Mar 21, 2026
Open quantum batteries (QBs) operate under unavoidable system-environment interactions, where both dissipation and coherent renormalization influence their performance. While most previous studies focus on dissipative effects, the role of environment...
Noise-induced contraction of MPO truncation errors in noisy random circuits and Lindbladian dynamics
Zhi-Yuan Wei, Joel Rajakumar, Jon Nelson +3 more·Mar 20, 2026
We study how matrix-product-operator (MPO) truncation errors evolve when simulating two setups: (1) 1D Haar-random circuits under either depolarizing noise or amplitude-damping noise, and (2) 1D Lindbladian dynamics of a non-integrable quantum Ising ...
Quantum gyroscope based on three-dimensional rotation induced Berry phase
Huaijin Zhang, Zhang-Qi Yin·Mar 20, 2026
Solid-spin defects in diamond provide long coherence times and room-temperature optical initialization and readout, making them an attractive platform for compact solid-state quantum gyroscopes. A central challenge for NV-based gyroscopes is that the...
Measurement-Induced Quantum Neural Network
Paul Argyle, Djamil Lakhdar-Hamina, Sarah H. Miller +1 more·Mar 19, 2026
We introduce a measurement-induced quantum neural network (MINN), an adaptive monitored-circuit architecture in which mid-circuit measurement outcomes determine the entangling gates in subsequent layers. In contrast to standard monitored circuits whe...