Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware-Efficient Bosonic Module for Entangling Superconducting Quantum Processors via Optical Networks
Jia-Hua Zou, Weizhou Cai, Jia-Qi Wang +7 more·Nov 13, 2025
Scaling superconducting quantum processors beyond single dilution refrigerators requires efficient optical interconnects, yet integrating microwave-to-optical (M2O) transducers poses challenges due to frequency mismatches and qubit decoherence. We pr...
Quantum Simulation of Non-unitary Dynamics via Contour-based Matrix Decomposition
Chao Wang, Huan-Yu Liu, Cheng Xue +4 more·Nov 13, 2025
We introduce contour-based matrix decomposition (CBMD), a framework for scalable simulation of non-unitary dynamics. Unlike existing methods that follow the ``integrate-then-discretize" paradigm and rely heavily on numerical quadrature, CBMD generali...
Lévy-Khintchine Structure Enables Fast-Forwardable Lindbladian Simulation
Minbo Gao, Zhengfeng Ji, Chenghua Liu·Nov 13, 2025
Simulation of open quantum systems is an area of active research in quantum algorithms. In this work, we revisit the connection between Markovian open-system dynamics and averages of Hamiltonian real-time evolutions, which we refer to as Hamiltonian ...
Addressable fault-tolerant universal quantum gate operations for high-rate lift-connected surface codes
Josias Old, Juval Bechar, Markus Müller +1 more·Nov 13, 2025
Quantum low-density parity check (qLDPC) codes are among the leading candidates to realize error-corrected quantum memories with low qubit overhead. Potentially high encoding rates and large distance relative to their block size make them appealing f...
QuCoWE Quantum Contrastive Word Embeddings with Variational Circuits for NearTerm Quantum Devices
Rabimba Karanjai, Hemanth Hegadehalli Madhavarao, Lei Xu +1 more·Nov 13, 2025
We present QuCoWE a framework that learns quantumnative word embeddings by training shallow hardwareefficient parameterized quantum circuits PQCs with a contrastive skipgram objective Words are encoded by datareuploading circuits with controlled ring...
Measurement protocol for detecting correlated topological insulators in synthetic quantum systems
Yixin Ma, Chao Xu, Shenghan Jiang·Nov 13, 2025
Two-dimensional topological insulators, characterized by symmetry-protected anomalous boundary modes, have been generalized to the strongly correlated regime for both bosonic and fermionic systems. As correlated topological insulators (TI) approach e...
First and second quantized digital quantum simulations of bosonic systems
Mathias Mikkelsen, Hubert Okadome Valencia·Nov 13, 2025
We compare the basic resource requirements for first and second quantized bosonic mappings in a system consisting of $N$ particles in $M$ modes. In addition to the standard binary first quantized mapping, we investigate the unary first quantized mapp...
Enantiodetection in a cavity QED setup with finite chiral molecules
Xiang Guo, Xiaojun Zhang, Yong Li +1 more·Nov 13, 2025
We investigate enantiodetection for both a single cyclic three-level chiral molecule and finite ensembles of such molecules by monitoring the steady-state intracavity photon number in a cavity-QED platform. Our scheme exploits the intrinsic global $π...
SeQuant Framework for Symbolic and Numerical Tensor Algebra. I. Core Capabilities
Bimal Gaudel, Robert G. Adam, Ajay Melekamburath +5 more·Nov 13, 2025
SeQuant is an open-source library for symbolic algebra of tensors over commutative (scalar) and non-commutative (operator) rings. The key innovation supporting most of its functionality is a graph-theoretic tensor network (TN) canonicalizer that can ...
Quantum Period-Finding using One-Qubit Reduced Density Matrices
Marco Bernardi·Nov 13, 2025
The quantum period-finding (QPF) algorithm can compute the period of a function exponentially faster than the best-known classical algorithm. In standard QPF, the output state has a primary contribution from $r$ high-probability bit strings, where $r...
Mapping Game Theory to Quantum Systems: Nash Equilibria via Neutral Atom Computing
Giovanni Ferrannini, Dario di Gregorio, Federico Fissore·Nov 13, 2025
Nash equilibria are crucial for understanding game behavior and systems in economics, physics, biology, and computer science. A significant application arises from the connection between Nash equilibria and optimization problems . However, finding Na...
Uncovering and Circumventing Noise in Quantum Algorithms via Metastability
Antonio Sannia, Pratik Sathe, Luis Pedro García-Pintos·Nov 12, 2025
The presence of noise is the primary challenge in realizing fault-tolerant quantum computers. In this work, we introduce and experimentally validate a novel strategy to circumvent noise by exploiting the phenomenon of metastability, where a dynamical...
Constrained Shadow Tomography for Molecular Simulation on Quantum Devices
Irma Avdic, Yuchen Wang, Michael Rose +4 more·Nov 12, 2025
Quantum state tomography is a fundamental task in quantum information science, enabling detailed characterization of correlations, entanglement, and electronic structure in quantum systems. However, its exponential measurement and computational deman...
Trotterized Variational Quantum Control for Spin-Chain State Transfer
Nahid Binandeh Dehaghani, Rafal Wisniewski, A. Pedro Aguiar·Nov 12, 2025
We present a hybrid variational framework for quantum optimal control aimed at high-fidelity state transfer in spin chains. The system dynamics are discretized and compiled into a parameterized circuit, where deterministic two-qubit blocks implement ...
Cyclic Hypergraph Product Code
Arda Aydin, Nicolas Delfosse, Edwin Tham·Nov 12, 2025
Hypergraph product (HGP) codes are one of the most popular family of quantum low-density parity-check (LDPC) codes. Circuit-level simulations show that they can achieve the same logical error rate as surface codes with a reduced qubit overhead. They ...
Nonequilibrium Probes of Quantum Geometry in Gapless Systems
Bastien Lapierre, Per Moosavi, Blagoje Oblak·Nov 12, 2025
Much of our understanding of gapless quantum matter stems from low-energy descriptions using conformal field theory. This is especially true in 1+1 dimensions, where such theories have an infinite-dimensional parameter space induced by their conforma...
Superdiffusive transport protected by topology and symmetry in all dimensions
Shaofeng Huang, Yu-Peng Wang, Jie Ren +1 more·Nov 12, 2025
Superdiffusion is an anomalous transport behavior. Recently, a new mechanism, termed the ``nodal mechanism," has been proposed to induce superdiffusion in quantum models. However, existing realizations of the nodal mechanism have so far been proposed...
Adaptive Estimation of Drifting Noise in Quantum Error Correction
Devansh Bhardwaj, Evangelia Takou, Yingjia Lin +1 more·Nov 12, 2025
Advancing quantum information processors and building fault-tolerant architectures rely on the ability to accurately characterize the noise sources and suppress their impact on quantum devices. In practice, noise often drifts over time, whereas conve...
Shorter width truncated Taylor series for Hamiltonian dynamics simulations
Michelle Wynne Sze, David Zsolt Manrique, David Muñoz Ramo +1 more·Nov 12, 2025
As established in the seminal work by Berry et al.[1], expanding the time evolution operator using truncated Taylor series (up to some order $K$) makes a good candidate for simulating Hamiltonian dynamics. Here, we adapt the method but present an alt...
Interferometric Braiding of Anyons in Chern Insulators
Felix A. Palm, Nader Mostaan, Nathan Goldman +1 more·Nov 12, 2025
Coherent control and braiding of anyons remain central challenges in realizing topologically protected quantum operations. We propose a Ramsey interferometry protocol to directly access the geometric phases associated with anyons in fractional Chern ...