Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,694
This Month
1,159
Today
0
Research Volume
13,011 papers in 12 months (-3% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Structural Analysis of Directional qLDPC Codes
Mohammad Rowshan·Feb 22, 2026
Directional codes, recently introduced by Gehér--Byfield--Ruban \cite{Geher2025Directional}, constitute a hardware-motivated family of quantum low-density parity-check (qLDPC) codes. These codes are defined by stabilizers measured by ancilla qubits e...
Quantum Error Correction and Dynamical Decoupling: Better Together or Apart?
Victor Kasatkin, Mario Morford-Oberst, Arian Vezvaee +1 more·Feb 22, 2026
Quantum error correction/detection (QEC/QED) and dynamical decoupling (DD) are tools for protecting quantum information. A natural goal is to combine them to outperform either approach alone. Such a benefit is not automatic: physical DD can conflict ...
Exceptional Point Superradiant Lasing with Ultranarrow Linewidth
Min Du, Qian Bin, Qing-Yang Qiu +2 more·Feb 22, 2026
Achieving superradiant lasing with an ultranarrow linewidth is crucial for enhancing atomic clock stability in quantum precision measurement. By employing the exceptional point (EP) property of the system, we demonstrate theoretically superradiant la...
Co-Propagation of Quantum Time Synchronization and Optical Frequency Transfer over a 122 km Hollow-Core Fiber
Huibo Hong, Xiao Xiang, Runai Quan +15 more·Feb 22, 2026
The co-propagation of quantum and classical signals through shared optical fibers is crucial for scalable quantum networks. However, this coexistence is fundamentally limited by spontaneous Raman scattering (SpRS) from the bright classical light, whi...
On Identifying Critical Network Edges via Analyzing Changes in Shapes (Curvatures)
Bhaskar DasGupta, Katie Kruzan·Feb 22, 2026
In recent years extensions of manifold Ricci curvature to discrete combinatorial objects such as graphs and hypergraphs (popularly called as"network shapes"), have found a plethora of applications in a wide spectrum of research areas ranging over met...
Predicting Magic from Very Few Measurements
J. M. Varela, L. L. Keller, A. de Oliveira Junior +3 more·Feb 21, 2026
The nonstabilizerness of quantum states is a necessary resource for universal quantum computation, yet its characterization is notoriously demanding. Quantifying nonstabilizerness typically requires an exponential number of measurements and a doubly ...
Integrable cascaded frequency conversion using the time rescaling shortcut to adiabaticity
J. L. Montenegro Ferreira·Feb 21, 2026
In this letter we explore how full frequency conversion can be performed in shorter, integrable devices by using a STIRAP-like protocol modified by the time rescaling shortcut to adiabaticity. We show how the coupled equations for two simultaneous th...
Trotter Error and Orbital Transformations in Quantum Phase Estimation
Marvin Kronenberger, Mihael Erakovic, Markus Reiher·Feb 21, 2026
Quantum computation with Trotter product formulae is straightforward and requires little overhead in terms of logical qubits. The choice of the orbital basis significantly affects circuit depth, with localised orbitals yielding lowest circuit depths....
Why measurements are made of effects
Tobias Fritz·Feb 21, 2026
Both in quantum theory and in general probabilistic theories, measurements with $n$ outcomes are modelled as $n$-tuples of \emph{effects} summing up to the unit effect. Why is this the case, and can this assumption be meaningfully relaxed? Here we de...
Frozen and Growing Quantum Work under Noise: Coherence and Correlations as Key Resources
Mohammad B. Arjmandi·Feb 21, 2026
We investigate the decomposition of ergotropy into incoherent and coherent contributions for quantum systems subject to typical Markovian noise channels. The incoherent part originates from population inversion in the energy eigenbasis after dephasin...
Hierarchies of Gaussian multimode entanglement from thermodynamic quantifiers
Mrinmoy Samanta, Sudipta Mondal, Ayan Patra +2 more·Feb 21, 2026
We develop a thermodynamic characterization of multimode entanglement in pure continuous-variable systems by quantifying the gap between globally and locally extractable work (ergotropy). For arbitrary pure multimode Gaussian states, we prove that th...
Nonabelian Anyons attached to Superconducting Islands in FQH Liquids
Hisham Sati, Urs Schreiber·Feb 21, 2026
The idea that topologically protected quantum states, such as anyons, may be attached to super/semiconductor heterostructures has received enormous attention, but experimental signatures in 1D systems remain elusive. Here we revisit theoretical under...
A Symplectic Proof of the Quantum Singleton Bound
Frederick Dehmel, Shilun Li·Feb 21, 2026
We present a symplectic linear-algebraic proof of the Quantum Singleton Bound for stabiliser quantum error-correcting codes together with a Lean4 formalisation of the linear-algebraic argument. The proof is formulated in the language of finite-dimens...
What Distributed Computing Got Wrong: The Category Mistake That Turned Design Choices into Laws of Nature
Paul Borrill·Feb 21, 2026
The foundational impossibility results of distributed computing -- the Fischer-Lynch-Paterson theorem, the Two Generals Problem, the CAP theorem -- are widely understood as discoveries about the physical limits of coordination. This paper argues that...
Higher-order circuits
Matt Wilson·Feb 21, 2026
We write down a series of basic laws for (strict) higher-order circuit diagrams. More precisely, we define higher-order circuit theories in terms of: (a) nesting, (b) temporal and spatial composition, and (c) equivalence between lower-order bipartite...
Auto Quantum Machine Learning for Multisource Classification
Tomasz Rybotycki, Sebastian Dziura, Piotr Gawron·Feb 20, 2026
With fault-tolerant quantum computing on the horizon, there is growing interest in applying quantum computational methods to data-intensive scientific fields like remote sensing. Quantum machine learning (QML) has already demonstrated potential for s...
The Category Mistake of Cislunar Time: Why NASA Cannot Synchronize What Doesn't Exist
Paul Borrill·Feb 20, 2026
In April 2024, the White House directed NASA to establish Coordinated Lunar Time (LTC) by December 2026. The programme assumes that a unified time standard can be constructed by deploying atomic clocks on the lunar surface, computing relativistic cor...
Four- and six-photon stimulated Raman transitions for coherent qubit and qudit operations
Gabriel J. Gregory, Evan R. Ritchie, Alex Quinn +4 more·Feb 20, 2026
We experimentally demonstrate transitions between electronic angular momentum states with a difference in magnetic quantum numbers $Δ\mathrm{m_J} = $ 3, 4, and 5 via resonant four- and six-photon stimulated Raman transitions in a single trapped atom....
Controlling emergent dynamical behavior via phase-engineered strong symmetries
Marc Nairn, Beatriz Olmos, Parvinder Solanki·Feb 20, 2026
Symmetry constraints provide a powerful means to control the dynamics of open quantum systems. However, the set of accessible control parameters is often limited. Here, we show that a tunable phase in the collective light-matter coupling of a cavity ...
Engineering quantum criticality and dynamics on an analog-digital simulator
Alexandra A. Geim, Nazli Ugur Koyluoglu, Simon J. Evered +14 more·Feb 20, 2026
Understanding emergent phenomena in out-of-equilibrium interacting many-body systems is an exciting frontier in physical science. While quantum simulators represent a promising approach to this long-standing problem, in practice it can be challenging...