Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,188
This Month
0
Today
0
Research Volume
13,351 papers in 12 months (+7% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Local active error correction from simulated confinement
Ethan Lake·Oct 9, 2025
We refine an old idea for performing fault-tolerant error correction in topological codes by simulating confining interactions between excitations. We implement confinement using an array of local classical processors that measure syndromes, broadcas...
Quantum Limits of LEO Satellite Beacon Reading
Pere Munar-Vallespir, Marc Geitz, Ángeles Vázquez-Castro +1 more·Oct 9, 2025
We study the quantum limits of the ELROI beacon concept introduced by Holmes, Weaver, and Palmer. In this concept, a satellite continuously emits a weak optical signal to broadcast its identity. Via analysis of the fundamental limits on communication...
Quantum Entanglement without Spin-Analyzing Power Dependence at the Colliders
Junle Pei, Tianjun Li, Lina Wu +2 more·Oct 9, 2025
We study the quantum entanglement at the colliders which is independent of the spin-analyzing powers. Taking $Λ(\to pπ^-)\barΛ(\to \bar{p}π^+)$ as an example, we investigate whether quantum entanglement in fermion pairs produced at colliders can be c...
Amplification and Detection of Single Itinerant Microwave Photons
Lukas Danner, Max Hofheinz, Nicolas Bourlet +3 more·Oct 9, 2025
Single-photon detectors are an essential part of the toolbox of modern quantum optics for implementing quantum technologies and enabling tests of fundamental physics. The low energy of microwave photons, the natural signal path for superconducting qu...
Integer Factoring with Unoperations
Paul Kohl·Oct 9, 2025
This work introduces the notion of unoperation $\mathfrak{Un}(\hat{O})$ of some operation $\hat{O}$. Given a valid output of $\hat{O}$, the corresponding unoperation produces a set of all valid inputs to $\hat{O}$ that produce the given output. Furth...
Quantum Max-Cut is NP hard to approximate
Stephen Piddock·Oct 9, 2025
We unconditionally prove that it is NP-hard to compute a constant multiplicative approximation to the QUANTUM MAX-CUT problem on an unweighted graph of constant bounded degree. The proof works in two stages: first we demonstrate a generic reduction t...
Quantum channel discrimination against jammers
Kun Fang, Michael X. Cao·Oct 9, 2025
We study the problem of quantum channel discrimination between two channels with an adversary input party (a.k.a. a jammer). This setup interpolates between the best-case channel discrimination as studied by (Wang & Wilde, 2019) and the worst-case ch...
Quantum Random Feature Method for Solving Partial Differential Equations
Junpeng Hu, Shi Jin, Nana Liu +1 more·Oct 9, 2025
Quantum computing holds significant promise for scientific computing due to its potential for polynomial to even exponential speedups over classical methods, which are often hindered by the curse of dimensionality. While neural networks present a mes...
Hamiltonian Decoded Quantum Interferometry
Alexander Schmidhuber, Jonathan Z. Lu, Noah Shutty +3 more·Oct 9, 2025
We introduce Hamiltonian Decoded Quantum Interferometry (HDQI), a quantum algorithm that utilizes coherent Bell measurements and the symplectic representation of the Pauli group to reduce Gibbs sampling and Hamiltonian optimization to classical decod...
Measuring gravitational lensing time delays with quantum information processing
Zhenning Liu, William DeRocco, Shiming Gu +6 more·Oct 9, 2025
The gravitational fields of astrophysical bodies bend the light around them, creating multiple paths along which light from a distant source can arrive at Earth. Measuring the difference in photon arrival time along these different paths provides a m...
A Quantum Walk-Enabled Blockchain with Weighted Quantum Voting Consensus
Chong-Qiang Ye, Heng-Ji Li, Jian Li +1 more·Oct 9, 2025
Quantum blockchains provide inherent resilience against quantum adversaries and represent a promising alternative to classical blockchain systems in the quantum era. However, existing quantum blockchain architectures largely depend on entanglement to...
Learning T-conjugated stabilizers: The multiple-squares dihedral StateHSP
Gideon Lee, Jonathan A. Gross, Masaya Fukami +1 more·Oct 9, 2025
The state hidden subgroup problem (StateHSP) is a recent generalization of the hidden subgroup problem. We present an algorithm that solves the non-abelian StateHSP over $N$ copies of the dihedral group of order $8$ (the symmetries of a square). This...
Symmetric Self-Dual Quantum Codes on High Dimensional Expanders
Kyle Gulshen, Tali Kaufman·Oct 9, 2025
We construct a family of constant-rate highly-symmetric self-dual qLDPC codes on high dimensional expanders. This is the first self-dual code constructed on high dimensional expanders and also the first such code with a rich (e.g. transitive) symmetr...
Balanced ternary formalism of second quantization
Yao Yao·Oct 9, 2025
We construct a second-quantized representation with a structure of balanced ternary formalism, which involves three substances in organic molecular materials, namely electron, hole and charge-transfer exciton, into a uniform framework. The quantum th...
QuIRK: Quantum-Inspired Re-uploading KAN
Vinayak Sharma, Ashish Padhy, Lord Sen +4 more·Oct 9, 2025
Kolmogorov-Arnold Networks or KANs have shown the ability to outperform classical Deep Neural Networks, while using far fewer trainable parameters for regression problems on scientific domains. Even more powerful has been their interpretability due t...
A Meta-Complexity Characterization of Minimal Quantum Cryptography
Bruno Cavalar, Boyang Chen, Andrea Coladangelo +4 more·Oct 9, 2025
We give a meta-complexity characterization of EFI pairs, which are considered the "minimal" primitive in quantum cryptography (and are equivalent to quantum commitments). More precisely, we show that the existence of EFI pairs is equivalent to the fo...
The detection of Planck-scale physics facilitated by nonlinear quantum optics
Wenlin Li, Chengsong Zhao, Najmeh Eshaqi-Sani +2 more·Oct 9, 2025
A tenet of contemporary physics is that novel physics beyond the Standard Model lurks at a scale related to the Planck length. The development and validation of a unified framework that merges general relativity and quantum physics is contingent upon...
Product testing with single-copy measurements
Jacob Beckey, Luke Coffman, Ariel Shlosberg +2 more·Oct 9, 2025
In this work, we study the sample complexity of two variants of product testing when restricted to single-copy measurements. In particular, we consider both bipartite product testing (i.e., does there exist at least one non-trivial cut across which t...
Optimal and Robust In-situ Quantum Hamiltonian Learning through Parallelization
Suying Liu, Xiaodi Wu, Murphy Yuezhen Niu·Oct 9, 2025
Hamiltonian learning is a cornerstone for advancing accurate many-body simulations, improving quantum device performance, and enabling quantum-enhanced sensing. Existing readily deployable quantum metrology techniques primarily focus on achieving Hei...
Quantum Advantage from Sampling Shallow Circuits: Beyond Hardness of Marginals
Daniel Grier, Daniel M. Kane, Jackson Morris +2 more·Oct 9, 2025
We construct a family of distributions $\{\mathcal{D}_n\}_n$ with $\mathcal{D}_n$ over $\{0, 1\}^n$ and a family of depth-$7$ quantum circuits $\{C_n\}_n$ such that $\mathcal{D}_n$ is produced exactly by $C_n$ with the all zeros state as input, yet a...