Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Time-adaptive single-shot crosstalk detector on superconducting quantum computer
Haiyue Kang, B. Harper, Muhammad Usman +1 more·Feb 20, 2025
Quantum crosstalk which stems from unwanted interference of quantum operations with nearby qubits is a major source of noise or errors in a quantum processor. In the context of shared quantum computing, it is challenging to mitigate the crosstalk eff...
Quantum walk based Monte Carlo simulation for photon interaction cross sections
Euimin Lee, Sangmin Lee, Shiho Kim·Feb 20, 2025
High-energy physics simulations traditionally rely on classical Monte Carlo methods to model complex particle interactions, often incurring significant computational costs. In this paper, we introduce a novel quantum-enhanced simulation framework tha...
Towards efficient quantum algorithms for diffusion probability models
Yunfei Wang, Ruoxi Jiang, Yingda Fan +4 more·Feb 20, 2025
A diffusion probabilistic model (DPM) is a generative model renowned for its ability to produce high-quality outputs in tasks such as image and audio generation. However, training DPMs on large, high-dimensional datasets such as high-resolution image...
Provable Quantum Algorithm Advantage for Gaussian Process Quadrature
Cristian A. Galvis-Florez, Ahmad Farooq, Simo Särkkä·Feb 20, 2025
The aim of this paper is to develop novel quantum algorithms for Gaussian process quadrature methods. Gaussian process quadratures are numerical integration methods where Gaussian processes are used as functional priors for the integrands to capture ...
Correcting and Extending Trotterized Quantum Many-Body Dynamics
G. Gentinetta, Friederike Metz, Giuseppe Carleo·Feb 19, 2025
A complex but important challenge in understanding quantum mechanical phenomena is the simulation of quantum many-body dynamics. Although quantum computers offer significant potential to accelerate these simulations, their practical application is cu...
Triangular lattice models of the Kalmeyer-Laughlin spin liquid from coupled wires
Tingyu Gao, Niklas Tausendpfund, Erik L. Weerda +3 more·Feb 18, 2025
Chiral spin liquids (CSLs) are exotic phases of interacting spins in two dimensions, characterized by long-range entanglement and fractional excitations. We construct a local Hamiltonian on the triangular lattice that stabilizes the Kalmeyer-Laughlin...
Predictive simulations of the dynamical response of mesoscopic devices
S. Boutin, Torsten Karzig, Tareq El Dandachi +4 more·Feb 18, 2025
As the complexity of mesoscopic quantum devices increases, simulations are becoming an invaluable tool for understanding their behavior. This is especially true for the superconductor-semiconductor heterostructures used to build Majorana-based topolo...
Increasing the distance of topological codes with time vortex defects
Gilad Kishony, Erez Berg·Feb 17, 2025
We propose modifying topological quantum error correcting codes by incorporating space-time defects, termed ``time vortices,'' to reduce the number of physical qubits required to achieve a desired logical error rate. A time vortex is inserted by addi...
Matrix Low-dimensional Qubit Casting Based Quantum Electromagnetic Transient Network Simulation Program
Qi Lou, Yijun Xu, W. Gu·Feb 17, 2025
In modern power systems, the integration of converter-interfaced generations requires the development of electromagnetic transient network simulation programs (EMTP) that can capture rapid fluctuations. However, as the power system scales, the EMTP's...
Programmable photonic waveguide arrays: opportunities and challenges
Yang Yang, Akram Youssry, A. Peruzzo·Feb 17, 2025
The rising complexity of photonic applications, ranging from quantum computing to neuromorphic processing, has driven the demand for highly programmable and scalable photonic integrated circuits. While mesh-based architectures built from Mach-Zehnder...
Circuit Partitioning and Full Circuit Execution: A Comparative Study of GPU-Based Quantum Circuit Simulation
Kartikey Sarode, Daniel Huang, E. .. Bethel·Feb 17, 2025
Executing large quantum circuits is not feasible using the currently available NISQ (noisy intermediate-scale quantum) devices. The high costs of using real quantum devices make it further challenging to research and develop quantum algorithms. As a ...
Quantum Fourier transform computational accuracy analysis
M. Lisnichenko, O. Kiselev·Feb 15, 2025
In this work, we present a rigorous accuracy analysis of the quantum Fourier transform (QFT), that identifies three natural sources of accuracy degeneracy: (i) discretization accuracy inherited from classical sampling theory, (ii) accuracy degeneracy...
Analog Quantum Teleportation
Uesli Alushi, Simone Felicetti, Roberto Di Candia·Feb 14, 2025
Digital teleportation protocols make use of entanglement, local measurements and a classical communication channel to transfer quantum states between remote parties. We consider analog teleportation protocols, where classical communication is replace...
Implicit Solvent Sample-Based Quantum Diagonalization
Danil S. Kaliakin, Akhil Shajan, Fangchun Liang +1 more·Feb 14, 2025
The sample-based quantum diagonalization (SQD) method shows great promise in quantum-centric simulations of ground state energies in molecular systems. Inclusion of solute–solvent interactions in simulations of electronic structure is critical for bi...
Anomalous Point-Gap Interactions Unveil the Mirage Bath
Yue Sun, Tao Shi, Ying Hu·Feb 13, 2025
Non-Hermitian topology has revolutionized our understanding of energy gaps and band topology, unveiling phases that do not exist within the Hermitian framework. Nonetheless, its fundamental implications for quantum interactions in open quantum system...
Quantum Speed Limit and Quantum Thermodynamic Uncertainty Relation under Feedback Control
H. Yunoki, Y. Hasegawa·Feb 13, 2025
Fundamental trade-off relations, such as quantum speed limit and quantum thermodynamic uncertainty relation, describe the performance limits of quantum systems by imposing that improvements in speed or precision necessitate a substantial thermodynami...
Implementation and Analysis of Regev's Quantum Factorization Algorithm
Przemyslaw Pawlitko, Natalia Mo'cko, Marcin Niemiec +1 more·Feb 13, 2025
Quantum computing represents a significant advancement in computational capabilities. Of particular concern is its impact on asymmetric cryptography through, notably, Shor's algorithm and the more recently developed Regev's algorithm for factoring co...
Adiabatic quantum unstructured search in parallel
Sean A. Adamson, P. Wallden·Feb 12, 2025
We present an optimized adiabatic quantum schedule for unstructured search building on the original approach of Roland and Cerf [Phys. Rev. A 65, 042308 (2002)]. Our schedule adiabatically varies the Hamiltonian even more rapidly at the endpoints of ...
CV4Quantum: Reducing the Sampling Overhead in Probabilistic Error Cancellation Using Control Variates
P. Shyamsundar, Wern Yeong·Feb 12, 2025
Quasiprobabilistic decompositions (QPDs) play a key role in maximizing the utility of near-term quantum hardware. For example, Probabilistic Error Cancellation (PEC) (an error mitigation technique) and circuit cutting (which enables large quantum com...
Computing Efficiently in QLDPC Codes
Alexander J. Malcolm, Andrew N. Glaudell, Patricio Fuentes +10 more·Feb 11, 2025
It is the prevailing belief that quantum error correcting techniques will be required to build a utility-scale quantum computer able to perform computations that are out of reach of classical computers. The QECCs that have been most extensively studi...