Papers
Live trends in quantum computing research, updated daily from arXiv.
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Emergent continuous symmetry and ground-state factorization induced by long-range interactions
Yue Yu, Myung-Joong Hwang·Oct 9, 2025
The spontaneous breaking of a $Z_2$ symmetry typically gives rise to emergent excitations possessing the same symmetry with a renormalized mass. Contrary to this conventional wisdom, we present a theory in which the low-lying excitation in the broken...
Non-Hermitian many-body localization in asymmetric chains with long-range interaction
Wen Wang, Han-Ze Li, Jian-Xin Zhong·Oct 9, 2025
Understanding the relationship between many-body localization and spectra in non-Hermitian many-body systems is crucial. In a one-dimensional clean, long-range interaction-induced non-Hermitian many-body localization system, we have discovered the co...
Generalised fractional Rabi problem
Alexander Lopez, Sébastien Fumeron, Malte Henkel +2 more·Oct 9, 2025
Fractional quantum dynamics provides a natural framework to capture nonlocal temporal behavior and memory effects in quantum systems. In this work, we analyze the physical consequences of fractional-order quantum evolution using a Green's function fo...
Efficient Fidelity Estimation with Few Local Pauli Measurements
Mingyu Sun, Gabriel Waite, Michael Bremner +1 more·Oct 9, 2025
As quantum devices scale, quantifying how close an experimental state aligns with a target becomes both vital and challenging. Fidelity is the standard metric, but existing estimators either require full tomography or apply only to restricted state/m...
Three-dimensional optical characterization of magnetostrictive deformation in magnomechanical systems
Xiaomin Liu, Jing Zhang, Jie Li +3 more·Oct 9, 2025
Magnomechanical systems with YIG spheres have been proven to be an ideal system for studying magnomechanically induced transparency, dynamical backaction, and rich nonlinear effects, such as the magnon-phonon cross-Kerr effect. Accurate characterizat...
Balanced ternary formalism of second quantization
Yao Yao·Oct 9, 2025
We construct a second-quantized representation with a structure of balanced ternary formalism, which involves three substances in organic molecular materials, namely electron, hole and charge-transfer exciton, into a uniform framework. The quantum th...
The detection of Planck-scale physics facilitated by nonlinear quantum optics
Wenlin Li, Chengsong Zhao, Najmeh Eshaqi-Sani +2 more·Oct 9, 2025
A tenet of contemporary physics is that novel physics beyond the Standard Model lurks at a scale related to the Planck length. The development and validation of a unified framework that merges general relativity and quantum physics is contingent upon...
Voxel-scale quantum state control in nanorod ensembles using reconfigurable needle beams
G. A. Mantashian, D. B. Hayrapetyan, P. A. Mantashyan·Oct 9, 2025
Precisely addressing single nanostructures inside dense ensembles remains a bottleneck for scalable photonic and quantum information devices. Here we demonstrate, through comprehensive finite element and variational Monte-Carlo modelling, that a reco...
From Quantum Circuits with Ultraslow Dynamics to Classical Plaquette Models
Vikram Ravindranath, Hanchen Liu, Xiao Chen·Oct 8, 2025
We introduce a family of hybrid quantum circuits involving unitary gates and projective measurements that display a measurement-induced phase transition. Remarkably, the volume-law phase featuring logarithmic entanglement growth for certain initial s...
Efficient tensor-network simulations of weakly-measured quantum circuits
Darren Pereira, Leonardo Banchi·Oct 8, 2025
We present a tensor-network-based method for simulating a weakly-measured quantum circuit. In particular, we use a Markov chain to efficiently sample measurements and contract the tensor network, propagating their effect forward along the spatial dir...
Experimental demonstration of genuine quantum information transmission through completely depolarizing channels in a superposition of cyclic orders
Yaxin Wang, Linxiang Zhou, Tianfeng Feng +6 more·Oct 8, 2025
A major challenge in quantum communication is addressing the negative effects of noise on channel capacity, especially for completely depolarizing channels, where information transmission is inherently impossible. The concept of indefinite causal ord...
Phonon-induced two-axis spin squeezing with decoherence reduction in hybrid spin-optomechanical system
Feng Qiao, Zu-Jian Ying·Oct 8, 2025
We propose a scheme to implement Heisenberg-limited spin squeezing in a hybrid cavity optomechanical-spin system. In our system, $N$ two-level systems are coupled via Tavis-Cummings interactions to a mechanical resonator (MR) in a standard optomechan...
Continuous measurement-based holonomic quantum computation
Anirudh Lanka, Juan Garcia-Nila, Todd A. Brun·Oct 8, 2025
We propose a scheme to generate holonomies using the Quantum Zeno effect, enabling logical unitary operations on quantum stabilizer codes purely through measurements. The quantum error-correcting code space is adiabatically rotated by measuring a suc...
Optimal filtering and generation of entangled photons for quantum applications in the presence of noise
Jordan M. Thomas, Andrew R. Cameron, Akil Pathiranage +6 more·Oct 8, 2025
Filtering is commonly used in quantum optics to reject noise photons, and also to enable interference between independent photons. However, filtering the joint spectrum of photon pairs can reduce the inherent coincidence probability or loss-independe...
Mereological Quantum Phase Transitions
Paolo Zanardi, Emanuel Dallas, Faidon Andreadakis·Oct 7, 2025
We introduce the novel concept of mereological quantum phase transition (m-QPTs). Our framework is based on a variational family of operator algebras defining generalized tensor product structures (g-TPS), a parameter-dependent Hamiltonian, and a qua...
An efficient algorithm to compute entanglement in states with low magic
ChunJun Cao, Gong Cheng, Tianci Zhou·Oct 7, 2025
A bottleneck for analyzing the interplay between magic and entanglement is the computation of these quantities in highly entangled quantum many-body magic states. Efficient extraction of entanglement can also inform our understanding of dynamical qua...
Noise-induced decoherence-free zones for anyons
Eric R. Bittner·Oct 7, 2025
We develop a stochastic framework for anyonic systems in which the exchange phase is promoted from a fixed parameter to a fluctuating quantity. Starting from the Stratonovich stochastic Liouville equation, we perform the Stratonovich--Itô conversion ...
Universal super-resolution framework for imaging of quantum dots
Dominik Vašinka, Jaewon Lee, Charlie Stalker +9 more·Oct 7, 2025
We present a universal deep-learning method that reconstructs super-resolved images of quantum emitters from a single camera frame measurement. Trained on physics-based synthetic data spanning diverse point-spread functions, aberrations, and noise, t...
Valley-dependent topological interface states in biased armchair nanoribbons of gapless single-layer graphene for transport applications
Zheng-Han Huang, Jing-Yuan Lai, Yu-Shu G. Wu·Oct 7, 2025
Valley-dependent topological physics offers a promising avenue for designing nanoscale devices based on gapless single-layer graphene. To demonstrate this potential, we investigate an electrical bias-controlled topological discontinuity in valley pol...
AC magnetometry in the strong drive regime with NV centers in diamond
Katrijn Everaert, Saipriya Satyajit, Jiashen Tang +6 more·Oct 7, 2025
Magnetic response measurements in the presence of AC drive fields provide critical insight into the properties of magnetic and conductive materials, such as phase transitions in two-dimensional van der Waals magnets, the heating efficiency of magneti...