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Live trends in quantum computing research, updated daily from arXiv.
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Multi-reference Quantum Davidson Algorithm for Quantum Dynamics
Noah F. Berthusen, Faisal Alam, Yu Zhang·Jun 12, 2024
Simulating quantum systems is one of the most promising tasks where quantum computing can potentially outperform classical computing. However, the robustness needed for reliable simulations of medium to large systems is beyond the reach of existing q...
Quantum Hardware-Enabled Molecular Dynamics via Transfer Learning
Abid Khan, Prateek Vaish, Y. Pang +8 more·Jun 12, 2024
The ability to perform ab initio molecular dynamics simulations using potential energies calculated on quantum computers would allow virtually exact dynamics for chemical and biochemical systems, with substantial impacts on the fields of catalysis an...
Feedback-Based Quantum Algorithm for Constrained Optimization Problems
Salahuddin Abdul Rahman, Özkan Karabacak, Rafael Wisniewski·Jun 12, 2024
The feedback-based algorithm for quantum optimization (FALQON) has recently been proposed to solve quadratic unconstrained binary optimization problems. This paper efficiently generalizes FALQON to tackle quadratic constrained binary optimization (QC...
Chebyshev Approximated Variational Coupled Cluster for Quantum Computing
Luca Erhart, Yuichiro Yoshida, V. Khinevich +1 more·Jun 11, 2024
We propose an approach to approximately implement the variational coupled cluster (VCC) theory on quantum computers, which struggles with exponential scaling of computational costs on classical computers. To this end, we employ expanding the exponent...
MPSDynamics.jl: Tensor network simulations for finite-temperature (non-Markovian) open quantum system dynamics.
Thibaut Lacroix, B. Le Dé, Angela Riva +2 more·Jun 11, 2024
The MPSDynamics.jl package provides an easy-to-use interface for performing open quantum systems simulations at zero and finite temperatures. The package has been developed with the aim of studying non-Markovian open system dynamics using the state-o...
Adaptive quantum optimization algorithms for programmable atom-cavity systems
YuChen Luo, Xiaopeng Li, Jian Lin·Jun 11, 2024
Developing quantum algorithms adaptive to specific constraints of near-term devices is an essential step towards practical quantum advantage. In a recent work [Phys. Rev. Lett. 131, 103601(2023)], we show cold atoms in an optical cavity can be built ...
Generalized Zeno effect and entanglement dynamics induced by fermion counting
Elias Starchl, Mark H. Fischer, L. M. Sieberer·Jun 11, 2024
We study a one-dimensional lattice system of free fermions subjected to a generalized measurement process: the system exchanges particles with its environment, but each fermion leaving or entering the system is counted. In contrast to the freezing of...
Detailed assessment of calculating drag force with quantum computers: Explicit time-evolution precludes exponential advantage for nonlinear differential equations
John Penuel, Amara Katabarwa, Peter D. Johnson +5 more·Jun 10, 2024
This study examines the potential for fault-tolerant quantum computers to provide utility in fluid dynamics simulations, with a focus on drag force calculations for ship hull design. We assess whether quantum algorithms can surpass classical computat...
Applications and resource estimates for open system simulation on a quantum computer
E. Mozgunov, Jeffrey Marshall, Namit Anand·Jun 10, 2024
We present two applications where open system quantum simulation is the preferred approach on a quantum computer. We choose concrete parameters for the problems in such a way that the application value, which we call utility, can be obtained from the...
Quantum equilibrium propagation for efficient training of quantum systems based on Onsager reciprocity
C. C. Wanjura, Florian Marquardt·Jun 10, 2024
The widespread adoption of machine learning and artificial intelligence in all branches of science and technology creates a need for energy-efficient, alternative hardware. While such neuromorphic systems have been demonstrated in a wide range of pla...
Quantum simulation of one-dimensional fermionic systems with Ising Hamiltonians
Matthias Werner, Artur Garc'ia-S'aez, M. Estarellas·Jun 10, 2024
In recent years, analog quantum simulators have reached unprecedented quality, both in qubit numbers and coherence times. Most of these simulators natively implement Ising-type Hamiltonians, which limits the class of models that can be simulated effi...
Enabling large-scale and high-precision fluid simulations on near-term quantum computers
Zhao-Yun Chen, Teng-Yang Ma, Chuang-Chao Ye +31 more·Jun 10, 2024
Quantum computational fluid dynamics (QCFD) offers a promising alternative to classical computational fluid dynamics (CFD) by leveraging quantum algorithms for higher efficiency. This paper introduces a comprehensive QCFD method, including an iterati...
Learning effective Hamiltonians for adaptive time-evolution quantum algorithms
Hongzheng Zhao, Ao Chen, Shu-Wei Liu +3 more·Jun 10, 2024
Digital quantum simulation of many-body dynamics relies on Trotterization to decompose the target time evolution into elementary quantum gates operating at a fixed equidistant time discretization. Recent advances have outlined protocols enabling more...
Quantifying fault tolerant simulation of strongly correlated systems using the Fermi-Hubbard model
Anjali A. Agrawal, J. Job, Tyler L. Wilson +8 more·Jun 10, 2024
Understanding the physics of strongly correlated materials is one of the grand challenge problems for physics today. A large class of scientifically interesting materials, from high-$T_c$ superconductors to spin liquids, involve medium to strong corr...
Simulating Parton Fragmentation on Quantum Computers
Tianyin Li, Hongxi Xing, Dan-Bo Zhang·Jun 9, 2024
Parton fragmentation functions (FFs) are indispensable for understanding processes of hadron production ubiquitously existing in high-energy collisions, but their first principle determination has never been realized due to the insurmountable difficu...
Bipartite reweight-annealing algorithm of quantum Monte Carlo to extract large-scale data of entanglement entropy and its derivative
Zhe Wang, Zhiyan Wang, Yi-Ming Ding +2 more·Jun 8, 2024
Entanglement entropy (EE) plays a central role in the intersection of quantum information science and condensed matter physics. However, scanning the EE for two-dimensional and higher-dimensional systems still remains challenging. To address this cha...
Field-based formalism for calculating multiqubit exchange-coupling rates for transmon qubits
Ghazi Khan, T. Roth·Jun 8, 2024
Superconducting qubits are one of the most mature platforms for quantum computing, but significant performance improvements are still needed. To improve the engineering of these systems, 3D full-wave computational electromagnetics analyses are increa...
Quantum computing for nonlinear differential equations and turbulence
Felix Tennie, Sylvain Laizet, S. Lloyd +1 more·Jun 7, 2024
Many problems in classical physics and engineering, such as turbulence, are governed by nonlinear differential equations, which typically require high-performance computing to be solved. Over the past decade, however, the growth of classical computin...
Entanglement with neutral atoms in the simulation of nonequilibrium dynamics of one-dimensional spin models
Anupam Mitra·Jun 7, 2024
Quantum entanglement is a key ingredient for quantum information processing with capabilities beyond that of classical computation. We study the generation and role of entanglement in the dynamics of spin-1/2 models, both for the design of quantum ga...
Relativistic VQE calculations of molecular electric dipole moments on trapped ion quantum hardware
Palak Chawla, Shweta, K. R. Swain +9 more·Jun 7, 2024
The quantum-classical hybrid variational quantum eigensolver (VQE) algorithm is among the most actively studied topics in atomic and molecular calculations on quantum computers, yet few studies address properties other than energies or account for re...