Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
A Geometrical Design Tool for Building Cost-Effective Layout-Aware n-Bit Quantum Gates Using the Bloch Sphere Approach
Ali Al-Bayaty, Marek Perkowski·Jan 1, 2026
The conventional design technique of any n-bit quantum gate is mainly achieved using unitary matrices multiplication, where n >= 2 and 1 <= m <= n-1 for m target qubits and n-m control qubits. These matrices represent quantum rotations by an n-bit qu...
Prediction of a measurable sign change in the Casimir force using a magnetic fluid
Long Ma, Larissa Inácio, Dai-Nam Le +2 more·Jan 1, 2026
We demonstrate quantum levitation controlled by Casimir forces acting between a polystyrene surface and a Teflon-coated metallic substrate immersed in a mixture of Toluene and magnetite particles. This system experiences repulsion-attraction transiti...
The JLMS formula in a large code with approximate error correction
Xi Dong, Donald Marolf, Pratik Rath·Jan 1, 2026
Gauge/gravity duality is often described as a quantum error correcting code. However, as seen in the Jafferis-Lewkowycz-Maldacena-Suh (JLMS) formula, exact quantum error correction with complementary recovery (and thus entanglement wedge reconstructi...
Multistep quantum master equation theory for response functions in four wave mixing electronic spectroscopy of multichromophoric macromolecules
Seogjoo J. Jang·Jan 1, 2026
This work provides an alternative derivation of third order response functions in four wave mixing spectroscopy of multichromophoric macromolecular systems considering only single exciton states. For the case of harmonic oscillator bath linearly and ...
Chip scale superconducting quantum gravimeter based on a SQUID transmon mechanical resonator
Salman Sajad Wani, Mughees Ahmed Khan, Abrar Ahmed Naqash +1 more·Jan 1, 2026
Precise gravitational measurements are vital for geophysics and inertial navigation, but current platforms struggle to combine absolute accuracy with high-bandwidth tracking. We address this challenge with a chip-scale superconducting gravimeter that...
Large-party limit of topological entanglement entropy in Chern-Simons theory
Simran Sain, Siddharth Dwivedi·Jan 1, 2026
We investigate the topological entanglement entropy of quantum states arising in the context of three-dimensional Chern-Simons theory with compact gauge group $G$ and Chern-Simons level $k$. We focus on the quantum states associated with the $T_{dm,d...
The Maximal Entanglement Limit in Statistical and High Energy Physics
Dmitri E. Kharzeev·Jan 1, 2026
These lectures advocate the idea that quantum entanglement provides a unifying foundation for both statistical physics and high-energy interactions. I argue that, at sufficiently long times or high energies, most quantum systems approach a Maximal En...
$Δ_T$ Noise from Electron-Hole Asymmetry in Normal and Superconducting Quantum Point Contacts
Sachiraj Mishra, Colin Benjamin·Jan 1, 2026
This work examines $Δ_T$ noise in two-terminal hybrid nanostructures featuring a quantum point contact (QPC), realized either between two normal metals (NQN) or between a normal metal and a superconductor (NQS). The inclusion of a QPC breaks electron...
Probabilistic Entanglement Distillation: Error Exponents via Postselected Quantum Hypothesis Testing Against Separable States
Xian Shi·Jan 1, 2026
Entanglement distillation and entanglement cost are fundamental tasks in quantum entanglement theory. This work studies both in the probabilistic setting and focuses on the asymptotic error exponent of probabilistic entanglement distillation when the...
Geometric and Quantum Kernel Methods for Predicting Skeletal Muscle Outcomes in chronic obstructive pulmonary disease
Azadeh Alavi, Hamidreza Khalili, Stanley H. Chan +3 more·Jan 1, 2026
Quantum methods are increasingly proposed for healthcare, but translational biomarker studies demand transparent benchmarking and robust small-dataset evaluation. We analysed a preclinical COPD cohort of 213 animals with blood and bronchoalveolar-lav...
When Does Quantum Differential Privacy Compose?
Daniel Alabi, Theshani Nuradha·Jan 1, 2026
Composition is a cornerstone of classical differential privacy, enabling strong end-to-end guarantees for complex algorithms through composition theorems (e.g., basic and advanced). In the quantum setting, however, privacy is defined operationally ag...
Quantum King-Ring Domination in Chess: A QAOA Approach
Gerhard Stenzel, Michael Kölle, Tobias Rohe +4 more·Jan 1, 2026
The Quantum Approximate Optimization Algorithm (QAOA) is extensively benchmarked on synthetic random instances such as MaxCut, TSP, and SAT problems, but these lack semantic structure and human interpretability, offering limited insight into performa...
Bridging Commutant and Polynomial Methods for Hilbert Space Fragmentation
Bo-Ting Chen, Yu-Ping Wang, Biao Lian·Jan 1, 2026
A quantum model exhibits Hilbert space fragmentation (HSF) if its Hilbert space decomposes into exponentially many dynamically disconnected subspaces, known as Krylov subspaces. A model may however have different HSFs depending on the method for iden...
Nature is stingy: Universality of Scrooge ensembles in quantum many-body systems
Wai-Keong Mok, Tobias Haug, Wen Wei Ho +1 more·Jan 1, 2026
Recent advances in quantum simulators allow direct experimental access to ensembles of pure states generated by measuring part of an isolated quantum many-body system. These projected ensembles encode fine-grained information beyond thermal expectati...
First appearance of quasiprobability negativity in quantum many-body dynamics
Rohit Kumar Shukla, Amikam Levy·Jan 1, 2026
Quasiprobability distributions capture aspects of quantum dynamics that have no classical counterpart, yet the dynamical emergence of their negativity in many-body systems remains largely unexplored. We introduce the \emph{first-time negativity} (FTN...
Efficient implementation of single particle Hamiltonians in exponentially reduced qubit space
Martin Plesch, Martin Friák, Ijaz Ahamed Mohammad·Jan 1, 2026
Current and near-term quantum hardware is constrained by limited qubit counts, circuit depth, and the high cost of repeated measurements. We address these challenges for solid state Hamiltonians by introducing a logarithmic-qubit encoding that maps a...
Neural Minimum Weight Perfect Matching for Quantum Error Codes
Yotam Peled, David Zenati, Eliya Nachmani·Jan 1, 2026
Realizing the full potential of quantum computation requires Quantum Error Correction (QEC). QEC reduces error rates by encoding logical information across redundant physical qubits, enabling errors to be detected and corrected. A common decoder used...
Anderson localisation in spatially structured random graphs
Bibek Saha, Sthitadhi Roy·Jan 1, 2026
We study Anderson localisation on high-dimensional graphs with spatial structure induced by long-ranged but distance-dependent hopping. To this end, we introduce a class of models that interpolate between the short-range Anderson model on a random re...
DC-MBQC: A Distributed Compilation Framework for Measurement-Based Quantum Computing
Yecheng Xue, Rui Yang, Zhiding Liang +1 more·Jan 1, 2026
Distributed quantum computing (DQC) is a promising technique for scaling up quantum systems. While significant progress has been made in DQC for quantum circuit models, there exists much less research on DQC for measurement-based quantum computing (M...
Device-Native Autonomous Agents for Privacy-Preserving Negotiations
Joyjit Roy, Samaresh Kumar Singh·Jan 1, 2026
Automated negotiations in insurance and business-to-business (B2B) commerce encounter substantial challenges. Current systems force a trade-off between convenience and privacy by routing sensitive financial data through centralized servers, increasin...