Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,749
This Month
1,196
Today
0
Research Volume
13,045 papers in 12 months (-2% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A Rigorous and Self--Contained Proof of the Grover--Rudolph State Preparation Algorithm
Antonio Falco, Daniela Falco-Pomares, Hermann G. Matthies·Jan 25, 2026
Preparing quantum states whose amplitudes encode classical probability distributions is a fundamental primitive in quantum algorithms based on amplitude encoding and amplitude estimation. Given a probability distribution $\{p_k\}_{k=0}^{2^n-1}$, the ...
The hyperlink representation of entanglement and the inclusion-exclusion principle
Silvia N. Santalla, Sudipto Singha Roy, Germán Sierra +1 more·Jan 25, 2026
The entanglement entropy (EE) of any bipartition of a pure state can be approximately expressed as a sum of entanglement links (ELs). In this work, we introduce their exact extension, i.e. the entanglement hyperlinks (EHLs), a type of generalized mut...
Perturbation Theory and the Quantum Rabi-model
Marcello Malagutti, Alberto Parmeggiani·Jan 25, 2026
In the first part of the paper we study a perturbative model of the Rabi system of Quantum Optics. We are therefore able to describe, through Rellich's theory, an analytic expansion of finite families of eigenvalues, of arbitrary fixed length. In par...
Colour Centre Formation in Silicon-On-Insulator for On-Chip Photonic Integration
Arnulf J. Snedker-Nielsen, David R. Gongora, Magnus L. Madsen +12 more·Jan 25, 2026
Colour centres in silicon have great potential as single photon sources for quantum technologies. Some of them - like the T centre - also possess optically-active spins that enable spin-photon interfaces for generating entangled photons and multi-spi...
The Hamiltonian for an atom interacting with gravitational waves
Linda M. van Manen, André Grossardt·Jan 25, 2026
Building on the relativistic Hamiltonian of Sonnleitner and Barnett arXiv:1806.00234 and its post-Newtonian extensions by Schwartz and Giuilini arXiv:1908.06929, we investigate composite atomic systems in dynamical gravitational backgrounds. Using a ...
Coherent Amplifier-Empowered Quantum Interferometer: Preserving Sensitivity and Quantum Advantage under High Loss
Jie Zhao, Zeliang Wu, Haoran Liu +6 more·Jan 25, 2026
Quantum interferometers offer phase measurement capabilities that surpass the standard quantum limit (SQL), with phase sensitivity and quantum enhancement factor serving as key performance metrics. However, practical implementations face severe degra...
Quantum Machine Learning Using Quantum Illumination With Quantum Enhanced Interference
Pallab Biswas, Tamal Maity·Jan 25, 2026
Quantum Machine Learning(QML) is developed by combining quantum mechanics principles with classical machine learning techniques in a hybrid framework that can give faster, exponential, more efficient power of quantum computing with the data driven in...
On Tunneling in the Quantum Multiverse
S. E. Ennadifi·Jan 25, 2026
Prompted by the longstanding interpretational controversy in quantum mechanics, quantum tunneling is heuristically addressed within the Everettian quantum multiverse. In this framework, the universal wavefunction splits into decohered reflected and t...
Multivariate Rényi divergences characterise betting games with multiple lotteries
Andrés F. Ducuara, Erkka Haapasalo, Ryo Takakura·Jan 25, 2026
We provide an operational interpretation of the multivariate Rényi divergence in terms of economic-theoretic tasks based on betting, risk aversion, and multiple lotteries. We show that the multivariate Rényi divergence $D_{\underlineα}(\vec{P}_X)$ of...
Experimental Phase-Matching Quantum Cryptographic Conferencing in Symmetric and Asymmetric Fiber Channels
Mi Zou, Bin-Chen Li, Shuai Zhao +5 more·Jan 25, 2026
Quantum cryptographic conferencing (QCC) allows multiple parties to establish common secure keys in quantum networks with information-theoretic security. However, the secure transmission distances of current QCC implementations are still limited to t...
Bosonic Diffusive Channel: Quantum Metrology via Finite Non-Gaussian Resource
Arman, Prasanta K. Panigrahi·Jan 25, 2026
We investigate the estimation of dephasing-induced decoherence in continuous-variable quantum systems using non-Gaussian probe states. By purifying the open system, we identify optimal probes, specifically squeezed cat and symmetric squeezed compass ...
Kirkwood-Dirac Quasiprobability as a Universal Framework for Quantum Measurements Across All Regimes
Bo Zhang, Yusuf Turek·Jan 25, 2026
The question of when the Kirkwood-Dirac quasiprobability serves as the most appropriate description for quantum measurements has remained unresolved, particularly across different measurement strengths. While known to generate anomalous weak values i...
Performance Analysis of Quantum-Secure Digital Signature Algorithms in Blockchain
Tushar Jain·Jan 25, 2026
The long-term security of public blockchains strictly depends on the hardness assumptions of the underlying digital signature schemes. In the current scenario, most deployed cryptocurrencies and blockchain platforms rely on elliptic-curve cryptograph...
Simple, Efficient, and Generic Post-Selection Decoding for qLDPC codes
Haipeng Xie, Nobuyuki Yoshioka, Kento Tsubouchi +1 more·Jan 25, 2026
Quantum error correction is indispensable for scalable quantum computation. Although encoding logical qubits substantially enhances noise resilience, achieving logical error rates low enough for practical algorithms remains challenging on existing ha...
Over-The-Air Extreme Learning Machines with XL Reception via Nonlinear Cascaded Metasurfaces
Kyriakos Stylianopoulos, Mattia Fabiani, Giulia Torcolacci +2 more·Jan 25, 2026
The recently envisioned goal-oriented communications paradigm calls for the application of inference on wirelessly transferred data via Machine Learning (ML) tools. An emerging research direction deals with the realization of inference ML models dire...
Quantum fast-forwarding fermion-boson interactions via the polaron transform
Harriet Apel, Burak Şahinoğlu·Jan 25, 2026
Simulating interactions between fermions and bosons is central to understanding correlated phenomena, yet these systems are inherently difficult to treat classically. Previous quantum algorithms for fermion-boson models exhibit computation costs that...
Reducing Circuit Resources in Grover's Algorithm via Constraint-Aware Initialization
Eunok Bae, Jeonghyeon Shin, Minjin Choi·Jan 25, 2026
Grover's search algorithm provides a quadratic speedup over classical brute-force search in terms of query complexity and is widely used as a versatile subroutine in numerous quantum algorithms, including those for combinatorial problems with large s...
Quantum-Inspired Algorithms beyond Unitary Circuits: the Laplace Transform
Noufal Jaseem, Sergi Ramos-Calderer, Gauthameshwar S. +3 more·Jan 25, 2026
Quantum-inspired algorithms can deliver substantial speedups over classical state-of-the-art methods by executing quantum algorithms with tensor networks on conventional hardware. Unlike circuit models restricted to unitary gates, tensor networks nat...
Traversability dynamics of minimal Sachdev-Ye-Kitaev Wormhole-inspired teleportation protocol with a parity-time ($\mathcal{PT}$)-symmetric non-Hermitian deformation
Sudhanva Joshi, Sunil Kumar Mishra·Jan 25, 2026
Holography-inspired teleportation has recently emerged as a significant area of research in quantum many-body systems. In this work, we investigate the effects of $\mathcal{PT}$ symmetric non-unitary deformations on the traversability of the wormhole...
Exponential Quantum Speedup on Structured Hard Instances of Maximum Independent Set
Vicky Choi·Jan 25, 2026
Establishing quantum speedup for computationally hard problems of practical relevance, particularly combinatorial optimization problems, remains a central challenge in quantum computation. In this work, we identify a structurally defined family of cl...