Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Non-Hermitian $\mathrm{sl}(3, \mathbb{C})$ three-mode couplers
B. M. Rodriguez-Lara, H. Ghaemi-Dizicheh, S. Dehdashti +3 more·Oct 28, 2025
Photonic systems with exceptional points, where eigenvalues and corresponding eigenstates coalesce, have attracted interest due to their topological features and enhanced sensitivity to external perturbations. Non-Hermitian mode-coupling matrices pro...
Nonreciprocity enhanced Quantum Gyroscopes based on Surface Acoustic Waves
Y. T. Zhu, Shibei Xue, Fangfang Ju +1 more·Oct 28, 2025
Surface acoustic waves (SAWs), as Rayleigh waves generated by elastic media, have been used in gyroscopes for over 40 years due to their unique propagation characteristics. However, their working principle, based on Coriolis effects, has become incre...
Optimal Unmanned Aerial Vehicle Deployment for Macro-Micro Traffic Monitoring Fused with Connected Vehicles
Chaopeng Tan, Jiarong Yao, Meng Wang·Oct 28, 2025
Reliable estimation of macro and micro traffic states is essential for urban traffic management. Unmanned Aerial Vehicles, with their airborne full-sample continuous trajectory observation, bring new opportunities for macro- and micro-traffic state e...
Clifford Transformations for Fermionic Quantum Systems: From Paulis to Majoranas to Fermions
Ilias Magoulas, Francesco A. Evangelista·Oct 27, 2025
Clifford gates and transformations, which map products of elementary Pauli or Majorana operators to other such products, are foundational in quantum computing, underpinning the stabilizer formalism, error-correcting codes, magic state distillation, q...
Thermal nature of confining strings
Sebastian Grieninger, Dmitri E. Kharzeev, Eliana Marroquin·Oct 27, 2025
We investigate the quantum statistical properties of the confining string connecting a static fermion-antifermion pair in the massive Schwinger model. By analyzing the reduced density matrix of the subsystem located in between the fermion and antifer...
The Feynman path integral formulation of non-dispersive Airy wave packets and their applications to the heavy meson mass spectra and ultra-cold neutrons
Paul Ferrante, Connor Donovan, Chueng-Ryong Ji·Oct 27, 2025
We demonstrate the non-spreading behavior of Airy wave packets utilizing the Feynman path integral formulation of a linear potential, the Airy functions' zeros correspondence to heavy-meson mass spectroscopy, and their implications to the eigenstates...
Giant Isotope Effect on the Excited-State Lifetime and Emission Efficiency of the Silicon T Centre
Moein Kazemi, Mehdi Keshavarz, Mark E. Turiansky +5 more·Oct 27, 2025
Efficient single-photon emitters are desirable for quantum technologies including quantum networks and photonic quantum computers. We investigate the T centre, a telecommunications-band emitter in silicon, and find a strong isotope dependence of its ...
A Scalable Superconducting Circuit Framework for Emulating Physics in Hyperbolic Space
Xicheng Xu, Ahmed Adel Mahmoud, Noah Gorgichuk +3 more·Oct 27, 2025
Theoretical studies and experiments in the last six years have revealed the potential for novel behaviours and functionalities in device physics through the synthetic engineering of negatively-curved spaces. For instance, recent developments in hyper...
Differential magnetometry with partially flipped Dicke states
Iagoba Apellaniz, Manuel Gessner, Géza Tóth·Oct 27, 2025
We study magnetometry of gradients and homogeneous background fields along the three orthogonal directions using two spatially separated spin ensembles. We derive trade-off relations for the achievable estimation precision of these parameters. Dicke ...
Estimating and decoding coherent errors of QEC experiments with detector error models
Evangelia Takou, Kenneth R. Brown·Oct 27, 2025
Decoders of quantum error correction (QEC) experiments make decisions based on detected errors and the expected rates of error events, which together comprise a detector error model. Here we show that the syndrome history of QEC experiments is suffic...
Topological protection of photon-pair generation in nonlinear waveguide arrays
A. Zecchetto, J. -R. Coudevylle, M. Morassi +4 more·Oct 27, 2025
Harnessing topological effects offers a promising route to protect quantum states of light from imperfections, potentially enabling more robust platforms for quantum information processing. This capability is particularly relevant for active photonic...
On Symmetry-Compatible Superselection Structures for Product States in 2D Quantum Spin Systems
Matthew Corbelli·Oct 27, 2025
We study superselection sectors in two-dimensional quantum spin systems with an on-site action of a compact abelian group $G$. Naaijkens and Ogata (2022) arXiv:2102.07707 showed that for states quasi-equivalent to a product state, the superselection ...
Quantum Information at the Electron-Ion Collider
Kun Cheng, Tao Han, Sokratis Trifinopoulos·Oct 27, 2025
We investigate quantum-information-theoretic observables in electron-proton scattering at the Electron-Ion Collider (EIC). Our analysis focuses on entanglement and magic, two complementary indicators of non-classicality in quantum states. We show tha...
The injective norm of CSS quantum error-correcting codes
Stephane Dartois, Gilles Zémor·Oct 27, 2025
In this paper, we compute the injective norm - a.k.a. geometric entanglement - of standard basis states of CSS quantum error-correcting codes. The injective norm of a quantum state is a measure of genuine multipartite entanglement. Computing this mea...
Thermodynamic work capacity of quantum information processing
Himanshu Badhani, Dhanuja G S, Siddhartha Das·Oct 27, 2025
We introduce the resource-theoretic free energy of a quantum channel as the maximal work extractable from the channel as its output equilibrates to a thermal state and its reference system remains locally intact. It is proportional to the relative en...
Apparent Universal Behavior in Second Moments of Random Quantum Circuits
Daniel Belkin, James Allen, Bryan K. Clark·Oct 27, 2025
Just how fast does the brickwork circuit form an approximate 2-design? Is there any difference between anticoncentration and being a 2-design? Does geometry matter? How deep a circuit will I need in practice? We tell you everything you always wanted ...
Chiral gapped states are universally non-topological
Xiang Li, Ting-Chun Lin, Yahya Alavirad +1 more·Oct 27, 2025
We propose an operator generalization of the Li-Haldane conjecture regarding the entanglement Hamiltonian of a disk in a 2+1D chiral gapped groundstate. The logic applies to regions with sharp corners, from which we derive several universal propertie...
Anti-concentration is (almost) all you need
Markus Heinrich, Jonas Haferkamp, Ingo Roth +1 more·Oct 27, 2025
Until very recently, it was generally believed that the (approximate) 2-design property is strictly stronger than anti-concentration of random quantum circuits, mainly because it was shown that the latter anti-concentrate in logarithmic depth, while ...
Group word dynamics from local random matrix Hamiltonians and beyond
Klée Pollock, Jonathan D. Kroth, Jonathon Riddell +1 more·Oct 27, 2025
We study one dimensional quantum spin chains whose nearest neighbor interactions are random matrices that square to one. By employing free probability theory, we establish a mapping from the many-body quantum dynamics of energy density in the origina...
Free-Fermion Measurement-Induced Volume- to Area-Law Entanglement Transition in the Presence of Fermion Interactions
Matthew S. Foster, Haoyu Guo, Chao-Ming Jian +1 more·Oct 27, 2025
At a generic volume- to area-law entanglement transition in a many-body system, quantum chaos is arrested. We argue that this tends to imply the vanishing of a certain "mass" term in the field theory of the measurement-induced phase transition (MIPT)...