Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Workshop for IT-Professionals
Bettina Just, Jörg Hettel, Gerhard Hellstern·Jun 27, 2025
Quantum computing is gaining strategic relevance beyond research-driven industries. However, many companies lack the expertise to evaluate its potential for real-world applications. Traditional training formats often focus on physical principles with...
Ground-state reachability for variational quantum eigensolvers: a Rydberg-atom case study
Juhi Singh, Andreas Kruckenhauser, R. V. Bijnen +1 more·Jun 27, 2025
As quantum computing progresses, variational quantum eigensolvers (VQE) for ground-state preparation have become an attractive option in leveraging current quantum hardware. However, a major challenge in implementing VQE is understanding whether a gi...
Quantum-Classical Auxiliary Field Quantum Monte Carlo with Matchgate Shadows on Trapped Ion Quantum Computers
Luning Zhao, Joshua J. Goings, Willie Aboumrad +38 more·Jun 27, 2025
We demonstrate an end-to-end workflow to model chemical reaction barriers with the quantum-classical auxiliary field quantum Monte Carlo (QC-AFQMC) algorithm with quantum tomography using matchgate shadows. The workflow operates within an accelerated...
Quantum thermal state preparation for near-term quantum processors
Jerome Lloyd, Dmitry A. Abanin·Jun 26, 2025
Preparation of quantum thermal states of many-body systems is a key computational challenge for quantum processors, with applications in physics, chemistry, and classical optimization. We provide a simple and efficient algorithm for thermal state pre...
Arbitrary Boundary Conditions and Constraints in Quantum Algorithms for Differential Equations via Penalty Projections
Philipp Schleich, Tyler Kharazi, Xiangyu Li +3 more·Jun 26, 2025
Complicated boundary conditions are essential to accurately describe phenomena arising in nature and engineering. Recently, the investigation of a potential speedup through quantum algorithms in simulating the governing ordinary and partial different...
Engineering Precise and Robust Effective Hamiltonians
Jiahui Chen, David Cory·Jun 25, 2025
Engineering effective Hamiltonians is essential for advancing quantum technologies including quantum simulation, sensing, and computing. This paper presents a general framework for effective Hamiltonian engineering, enabling robust, precise, and effi...
Quantum-Centric Alchemical Free Energy Calculations
Milana Bazayeva, Zhen Li, Danil S. Kaliakin +4 more·Jun 25, 2025
In the present work, we present a hybrid quantum-classical workflow aimed at improving the accuracy of alchemical free energy (AFE) predictions by incorporating configuration interaction (CI) simulations using the book-ending correction method. This ...
Efficient Inversion of Unknown Unitary Operations with Structured Hamiltonians
Yin Mo, Tengxiang Lin, Xin Wang·Jun 25, 2025
Unknown unitary inversion is a fundamental primitive in quantum computing and physics. Although recent work has demonstrated that quantum algorithms can invert arbitrary unknown unitaries without accessing their classical descriptions, improving the ...
Constant-Factor Improvements in Quantum Algorithms for Linear Differential Equations
Matthew Pocrnic, Peter D. Johnson, Amara Katabarwa +1 more·Jun 25, 2025
Finding the solution to linear ordinary differential equations of the form $\partial_t u(t) = -A(t)u(t)$ has been a promising theoretical avenue for \textit{asymptotic} quantum speedups. However, despite the improvements to existing quantum different...
PhasePoly: An Optimization Framework forPhase Polynomials in Quantum Circuits
Zihan Chen, Henry Chen, Yuwei Jin +6 more·Jun 25, 2025
Quantum computing has transformative computational power to make classically intractable computing feasible. As the algorithms that achieve practical quantum advantage are beyond manual tuning, quantum circuit optimization has become extremely import...
Variational simulation of quantum phase transitions induced by boundary fields
Alan C. Duriez, A. Saguia, M. S. Sarandy·Jun 25, 2025
The characterization of quantum phase transitions is a fundamental task for the understanding of quantum phases of matter, with a number of potential applications in quantum technologies. In this work, we use digital quantum simulation as a resource ...
Robust Feedback-Based Quantum Optimization: Analysis of Coherent Control Errors
Mirko Legnini, Julian Berberich·Jun 25, 2025
The Feedback-based Algorithm for Quantum Optimization (FALQON) is a Lyapunov inspired quantum algorithm proposed to tackle combinatorial optimization problems. In this paper, we examine the robustness of FALQON against coherent control errors, a clas...
Sequential Quantum Computing
Sebastián V. Romero, Alejandro Gomez Cadavid, E. Solano +1 more·Jun 25, 2025
We propose and experimentally demonstrate sequential quantum computing (SQC), a paradigm that utilizes multiple homogeneous or heterogeneous quantum processors in hybrid classical-quantum workflows. In this manner, we are able to overcome the limitat...
Quantum framework for simulating linear PDEs with Robin boundary conditions
N. Guseynov, Xiajie Huang, Nana Liu·Jun 25, 2025
We propose an explicit quantum framework for numerically simulating general linear partial differential equations (PDEs), extending previous work (Guseynov et al 2025 Phys. Rev. Res. 7 033100) to incorporate (a) Robin boundary conditions—which includ...
Consistent Simulation of Fibonacci Anyon Braiding within a Qubit Quasicrystal Inflation Code
Marcelo M. Amaral·Jun 25, 2025
The simulation of non-Abelian anyon braiding is a critical step towards fault-tolerant quantum computation. We introduce a framework for this task based on a one-dimensional Quasicrystal Inflation Code (QIC). The code is defined by a local Hamiltonia...
Error-resilient Reversal of Quantum Chaotic Dynamics Enabled by Scramblons
Yu-Chen Li, Tian-Gang Zhou, Shengyu Zhang +8 more·Jun 24, 2025
The emergence of the arrow of time in quantum many-body systems stems from the inherent tendency of Hamiltonian evolution to scramble quantum information and increase entanglement. While, in principle, one might counteract this temporal directionalit...
Quantum utility-scale error mitigation for quantum quench dynamics in Heisenberg spin chains
Seokwon Choi, Talal Ahmed Chowdhury, Kwangmin Yu·Jun 24, 2025
We implement a quantum error mitigation method termed self-mitigation, which is comparable to zero-noise extrapolation, at large scales to achieve quantum utility on near-term, noisy quantum computers. We investigate the effectiveness of several quan...
Isoprobability Models of Qubit Dynamics: Demonstration via Time-Dependent Phase Control on IBM Quantum
Ivo S. Mihov, N. Vitanov·Jun 24, 2025
Efficient quantum control is a cornerstone for the advancement of quantum technologies, from computation to sensing and communications. Several approaches in quantum control, e.g. optimal control and inverse engineering, use pulse amplitude and frequ...
Quantum-Classical Computing for Time-Dependent Ion-Atom Collision Dynamics: Applications to Charge Transfer Cross Section Simulations
Minchen Qiao, Yu-Xi Liu·Jun 24, 2025
The simulation of ion-atom collisions remains a formidable challenge due to the complex interplay between electronic and nuclear degrees of freedom. We present a hybrid quantum-classical computing framework for simulating time-dependent ion-atom coll...
A Perspective on Quantum Computing Applications in Quantum Chemistry Using 25-100 Logical Qubits.
Yuri Alexeev, Victor S. Batista, Nicholas P. Bauman +27 more·Jun 24, 2025
The intersection of quantum computing and quantum chemistry represents a promising frontier for achieving quantum utility in domains of both scientific and societal relevance. Owing to the exponential growth of classical resource requirements for sim...