Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Symmetric Resourceful Steady States via Non-Markovian Dissipation
Baptiste Debecker, Eduardo Serrano-Ensástiga, Thierry Bastin +2 more·Mar 20, 2026
We prove a no-go theorem for symmetry-based dissipative engineering of collective-spin steady states: in spin-only Lindblad dynamics with jump operators linear in the collective-spin operators, any unique steady state exhibiting at least $\mathbb{Z}_...
A single programmable photonic circuit for universal quantum measurements
Wen-Zhe Yan, Lan-Tian Feng, Zhibo Hou +7 more·Mar 20, 2026
Programmable photonic quantum processors face a critical challenge: despite significant advances in quantum state preparation and manipulation, measurements remain limited to projective techniques. Here, we demonstrate a programmable measurement proc...
Bright oxygen- and vacancy-derived spin-singlet diamond color centers with metastable spin triplets: OV$^{2+}$ and VOV$^{2+}$
John Mark P. Martirez·Mar 20, 2026
The ST1 diamond color center was experimentally demonstrated to involve a substitutional oxygen atom (O$_C$) and carbon vacancy (V$_C$), has a spin singlet ground-state, and a metastable electron spin ancilla: a triplet. ST1's structure was left unso...
Antenna Array Beamforming Based on a Hybrid Quantum Optimization Framework
Shuai Zeng·Mar 20, 2026
This paper proposes a hybrid quantum optimization framework for large-scale antenna-array beamforming with jointly optimized discrete phases and continuous amplitudes. The method combines quantum-inspired search with classical gradient refinement to ...
$Δ_T$ Noise, Quantum Shot Noise, and Thermoelectric Clues to the Pairing Puzzle in Iron Pnictides
A Rajmohan Dora, Sachiraj Mishra, Colin Benjamin·Mar 20, 2026
Quantum noise has long served as a powerful probe of quantum transport in mesoscopic junctions. Recently, temperature-driven noise, or $Δ_T$ noise, has attracted growing interest due to its presence even in the absence of average charge current. In t...
Search-Driven Clause Learning for Product-State Quantum $k$-SAT (PRODSAT-QSAT)
Samuel González-Castillo, Joon Hyung Lee, Alfons Laarman·Mar 20, 2026
We study PRODSAT-QSAT($k$): given rank-one $k$-local projectors, determine whether a quantum $k$-SAT instance admits a satisfying product state. We present a CDCL-style refutation framework that searches a finite partition of each qubit's Bloch spher...
Full Network Nonlocality Based Security In Quantum Key Distribution
Kaushiki Mukherjee·Mar 20, 2026
In the last decade research of quantum nonlocality has moved beyond the regime of standard Bell nonlocality to consider network-based experimental set-ups involving multiple independent sources. Notion of full network nonlocality has emerged as some ...
Variance reduction methods in the estimation of Pauli sums
Søren Fuglede Jørgensen, Rafael Emilio Barfknecht, Patrick Ettenhuber +1 more·Mar 20, 2026
Accurately estimating expectation values of quantum observables with as few measurements as possible is crucial to many quantum computing applications. We introduce a framework that covers many of existing measurement strategies and introduce heurist...
Layered Quantum Architecture Search for 3D Point Cloud Classification
Natacha Kuete Meli, Jovita Lukasik, Vladislav Golyanik +1 more·Mar 20, 2026
We introduce layered Quantum Architecture Search (layered-QAS), a strategy inspired by classical network morphism that designs Parametrised Quantum Circuit (PQC) architectures by progressively growing and adapting them. PQCs offer strong expressivene...
Cryptanalysis of four arbitrated quantum signature schemes
Pierre-Alain Jacqmin, Jean Liénardy·Mar 20, 2026
Arbitrated quantum signature (AQS) schemes aim at ensuring the authenticity of a message with the help of an arbitrator. Moreover, they aim at preventing repudiation, both from a sender that denies the origin of a message, and from a receiver who dis...
Stone-in-Waiting: A Cloud-Based Accelerator for the Quantum Approximate Optimization Algorithm
Shuai Zeng·Mar 20, 2026
The Quantum Approximate Optimization Algorithm (QAOA) and its advanced variant, the Quantum Alternating Operator Ansatz (QAOA), are major research topics in the current era of Noisy Intermediate-Scale Quantum (NISQ) computing. However, the problem of...
Adaptive Parallelism-Aware Qubit Routing for Ion Trap QCCD Architectures
Anabel Ovide, Andreu Angles-Castillo, Carmen G. Almudever·Mar 20, 2026
Trapped-ion Quantum Charge-Coupled Device (QCCD) architectures promise scalability through interconnected trap zones and dynamic ion transport; however, this transport capability creates a complex compilation challenge: how to move qubits efficiently...
Quantum Fisher Information as a Probe of Critical Scaling in Frustrated Magnets: Signatures from Kagome Quantum Spin Liquid
Zhengbang Zhou, Chengkang Zhou, Menghan Song +2 more·Mar 20, 2026
Quantum Fisher information (QFI) is a measure of multipartite quantum entanglement that can be obtained from inelastic neutron scattering data on quantum magnets. In this work, we demonstrate that the QFI can distinguish an unconventional quantum cri...
Structure orientation determined in transmission and reflection: q-plate
Hsin-Hui Huang, Meguya Ryu, Shuji Kamegaki +9 more·Mar 20, 2026
Determination of orientation in the imaged sample/scene has a large application potential when the anisotropy of properties is analysed, usually, under a linearly polarised illumination. This study combined several improvements of microscopy imaging:...
One-parameter counterexamples to the refined Bessis-Moussa-Villani conjecture
Hyunho Cha·Mar 20, 2026
The Bessis-Moussa-Villani (BMV) conjecture, originating in quantum statistical mechanics, was proved by Stahl after an influential reformulation by Lieb and Seiringer. A later refinement asks whether the normalized average over all words with $n$ let...
Efficiently Computable Strategies and Limits for Bosonic Channel Discrimination
Zixin Huang, Ludovico Lami, Vishal Singh +1 more·Mar 20, 2026
Discriminating between noisy quantum processes is a central primitive for quantum communication, metrology, and computing. While discrimination limits for finite-dimensional channels are well understood, the continuous-variable setting, particularly ...
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...
SDP bounds on quantum codes: rational certificates
Gerard Anglès Munné, Felix Huber·Mar 20, 2026
A fundamental problem in quantum coding theory is to determine the maximum size of quantum codes of given block length and distance. A recent work introduced bounds based on semidefinite programming, strengthening the well-known quantum linear progra...
Macroscopic Mpemba Effect from Cumulative-Heat-Enhanced Relaxation
Yun-Qian Lin, Z. C. Tu, Yu-Han Ma·Mar 20, 2026
The counterintuitive Mpemba effect, wherein a hotter system cools faster, critically lacks a universal macroscopic theory. Here, starting from linear irreversible thermodynamics, we formulate a generalized Newton's cooling law for the system-reservoi...
Theory of x-ray scattering from optically pumped excitons in atomically thin semiconductors
Joris Sturm, Andrei Benediktovitch, Nina Rohringer +1 more·Mar 20, 2026
We propose a framework to explore the internal charge distribution of mesoscopic quasiparticles by inelastic x-ray scattering, while also accounting for the conventional scattering from electrons. Specifically, we investigate a new contribution of in...