Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Virtual phase-covariant quantum broadcasting for qubits
Reiji Okada, Francesco Buscemi·Nov 25, 2025
Virtual maps allow the simulation of quantum operations by combining physical processes with classical post-processing. Recent work on virtual unitary covariant broadcasting has shown, however, that such maps remain impractical for observable estimat...
Error-structure-tailored early fault-tolerant quantum computing
Pei Zeng, Guo Zheng, Qian Xu +1 more·Nov 25, 2025
Fault tolerance is widely regarded as indispensable for achieving scalable and reliable quantum computing. However, the spacetime overhead required for fault-tolerant quantum computating remains prohibitively large. A critical challenge arises in man...
Suboptimality of Parity for Distilling Correlations with Nontrivial Marginals
Syed Affan Aslam, Areej Ilyas, Jibran Rashid·Nov 25, 2025
We prove that the PARITY protocol is optimal for a general class of non-adaptive distillation protocols of all $n$ player nonlocal boxes (NLBs) based on XOR games. The conditional distributions generated by these NLBs are assumed to have trivial loca...
Comment on Classical-Gravity--Quantum-Matter Claims About Gravity-Mediated Entanglement
Mikołaj Sienicki, Krzysztof Sienicki·Nov 25, 2025
A recent paper by Aziz and Howl (Nature 2025) argues that, once quantum matter is described at the level of quantum field theory and coupled to a classical gravitational field, higher order processes can generate entanglement between two spatially se...
Quantum Framework for Wavelet Shrinkage
Brani Vidakovic·Nov 25, 2025
This paper develops a unified framework for quantum wavelet shrinkage, extending classical denoising ideas into the quantum domain. Shrinkage is interpreted as a completely positive trace-preserving process, so attenuation of coefficients is carried ...
Generation of Ultrahigh Anomalous Hall Conductivities via Optimally Prepared Topological Floquet States
Andrew Cupo, Hai-Ping Cheng, Chandrasekhar Ramanathan +1 more·Nov 25, 2025
Ultrafast quantum matter experiments have validated predictions from Floquet theory - notably, the dynamical modification of the electronic band structure and the light-induced anomalous Hall effect, via monotonic modulation of the driving amplitude....
Nanophotonic magnetometry in a spin-dense diamond cavity
Nicholas J. Sorensen, Elham Zohari, Joshua S. Wildeman +3 more·Nov 25, 2025
Quantum sensors based on the nitrogen-vacancy (NV) center in diamond are leading platforms for high-sensitivity magnetometry with nanometer-scale resolution. State-of-the-art implementations, however, typically rely on bulky free-space optics or sacr...
Exciton collective modes in a bilayer of axion insulator $\text{MnBi}_2 \text{Te}_4$
Olivia Liebman, Jonathan B. Curtis, Emily Been +1 more·Nov 25, 2025
We investigate the emergence of an exciton condensate and associated collective modes in a bilayer configuration of $\text{MnBi}_2\text{Te}_4$, an antiferromagnetic topological insulator and van der Waals material, recognized for hosting axion physic...
Hardware Acceleration of Frustrated Lattice Systems using Convolutional Restricted Boltzmann Machine
Pratik Brahma, J. Han, Tamzid Razzaque +2 more·Nov 25, 2025
Geometric frustration gives rise to emergent quantum phenomena and exotic phases of matter. While Monte Carlo methods are traditionally used to simulate such systems, their sampling efficiency is limited by the complexity of interactions and ground-s...
Ta-based Josephson junctions using insulating ALD TaN tunnel barriers
Ekta Bhatia, Jack Lombardi, T. Vo +16 more·Nov 25, 2025
Josephson junctions form the core circuit element in superconducting quantum computing circuits, single flux quantum digital logic circuits, and sensing devices such as SQUIDs. Aluminum oxide has typically been used as the tunnel barrier. Its formati...
Generalized Landau Paradigm for quantum phases and phase transitions
Xie Chen·Nov 24, 2025
The Landau paradigm is a central dogma for understanding phase and phase transitions in condensed matter systems, yet for decades it has been known that a variety of quantum phases exist beyond the framework. Is there a more general framework that pr...
Fermionisation of the Aharonov--Bohm Phase on the Lightfront
Carolina Sole Panella, Wolfgang Wieland·Nov 24, 2025
We consider the phase space of the Maxwell field as a simplified framework to study the quantisation of holonomies (Wilson line operators) on lightlike (null) surfaces. Our results are markedly different from the spacelike case. On a spacelike surfac...
Exact Solutions for the Kemmer Oscillator in 1+1 Rindler Coordinates
T. Rouabhia, A. Boumali·Nov 24, 2025
This work presents exact solutions of the Kemmer equation for spin-1 particles in $(1+1)$-dimensional Rindler spacetime, motivated by the need to understand vector bosons under uniform acceleration, including non-inertial effects and the Unruh temper...
On the microlocal phase-space concentration of Wigner distributions associated with Schrödinger evolutions
Gianluca Giacchi, Davide Tramontana·Nov 24, 2025
In this work, we investigate the microlocal properties of the evolutions of Schrödinger equations using metaplectic Wigner distributions. So far, only restricted classes of metaplectic Wigner distributions, satisfying particular structural properties...
Measurement-Assisted Clifford Synthesis
Sowmitra Das·Nov 24, 2025
In this letter, we introduce a method to synthesize an $n$-qubit Clifford unitary $C$ from the stabilizer tableau of its inverse $C†$, using ancilla qubits and measurements. The procedure uses ancillary $|+\rangle$ states, controlled-Paulis, $X$-basi...
Relativistic Quantum-Speed Limit for Gaussian Systems and Prospective Experimental Verification
Salman Sajad Wani, Aatif Kaisar Khan, Saif Al-Kuwari +1 more·Nov 24, 2025
Timing and phase resolution in satellite QKD, kilometre-scale gravitational-wave detectors, and space-borne clock networks hinge on quantum-speed limits (QSLs), yet benchmarks omit relativistic effects for coherent and squeezed probes. We derive firs...
Localization and Delocalization of Quantum Trajectories in the Liouvillian Spectrum
Josef Richter, Masudul Haque, Lucas Sá·Nov 24, 2025
We develop an approach for understanding the dynamics of open quantum systems by analyzing individual quantum trajectories in the eigenbasis of the Liouvillian superoperator. From trajectory-eigenstate overlaps, we construct a quasiprobability distri...
Synergistic Effects of Detuning and Auxiliary Qubits on Quantum Synchronization
Amir Hossein Houshmand Almani, Ali Mortezapour, Alireza Nourmandipour·Nov 24, 2025
We investigate how detuning and auxiliary qubits collaboratively enhance quantum synchronization in a dissipative multi-qubit system that is coupled to a structured reservoir. Our findings indicate that while detuning is ineffective in Markovian envi...
Infrared absorption spectroscopy of a single polyatomic molecular ion
Zhenlin Wu, Tim Duka, Mariano Isaza-Monsalve +8 more·Nov 24, 2025
Absorption spectroscopy is a fundamental tool for probing molecular structure. However, performing absorption spectroscopy on individual molecules is challenging due to the low signal-to-noise ratio. Here, we report on a nondestructive absorption spe...
Quantum Coherence of Rare-Earth Ions in Heterogeneous Photonic Interfaces
Henry C. Hammer, Hassan A. Bukhari, Yogendra Limbu +6 more·Nov 24, 2025
Harnessing rare-earth ions in oxides for quantum networks requires integration with bright emitters in III-V semiconductors, but local disorder and interfacial noise limit their optical coherence. Here, we investigate the microscopic origins of the e...