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Live trends in quantum computing research, updated daily from arXiv.
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Entanglement area law in interacting bosons: from Bose-Hubbard, $\phi$4, and beyond
Donghoon Kim, Tomotaka Kuwahara·Nov 4, 2024
The entanglement area law is a universal principle that characterizes the information structure in quantum many-body systems and serves as the foundation for modern algorithms based on tensor network representations. Historically, the area law has be...
Resource-optimized fault-tolerant simulation of the Fermi-Hubbard model and high-temperature superconductor models
A. Kan, Benjamin C. B. Symons·Nov 4, 2024
Exploring low-cost applications is paramount to creating value in early fault-tolerant quantum computers. Here, we optimize both gate and qubit counts of recent algorithms for simulating the Fermi-Hubbard model. We further devise and compile algorith...
Rapidly mixing loop representation quantum Monte Carlo for Heisenberg models on star-like bipartite graphs
Jun Takahashi, Samuel Slezak, E. Crosson·Nov 3, 2024
Quantum Monte Carlo (QMC) methods have proven invaluable in condensed matter physics, particularly for studying ground states and thermal equilibrium properties of quantum Hamiltonians without a sign problem. Over the past decade, significant progres...
Quantum Token Obfuscation via Superposition
S. M. Y. I. Tomal, Abdullah Al Shafin·Nov 2, 2024
Traditional cryptographic techniques, including token obfuscation, are increasingly vulnerable to quantum attacks due to advancements in quantum computing. Quantum algorithms such as Shor's and Grover's pose significant threats to classical security ...
Quantum-centric computation of molecular excited states with extended sample-based quantum diagonalization
Stefano Barison, Javier Robledo Moreno, Mario Motta·Nov 1, 2024
The simulation of molecular electronic structure is an important application of quantum devices. Recently, it has been shown that quantum devices can be effectively combined with classical supercomputing centers in the context of the sample-based qua...
Dynamical simulations of many-body quantum chaos on a quantum computer
Laurin E. Fischer, Matea Leahy, Andrew Eddins +16 more·Nov 1, 2024
Quantum circuits with local unitaries offer a platform to explore many-body quantum dynamics in discrete time. Their locality makes them suitable for current processors, but verification at scale is difficult for non-integrable systems. Here we study...
Adiabatic state preparation for digital quantum simulations of QED in 1 + 1D
Matteo D’Anna, M. K. Marinković, Joao C. Pinto Barros·Nov 1, 2024
Quantum electrodynamics in 1 + 1D (QED2) shares intriguing properties with QCD, including confinement, string breaking, and interesting phase diagram when the non-trivial topological $\theta$-term is considered. Its lattice regularization is a common...
Quantum Entanglement Path Selection and Qubit Allocation via Adversarial Group Neural Bandits
Yingyu Huang, Lei Wang, Jie Xu·Nov 1, 2024
Quantum Data Networks (QDNs) have emerged as a promising framework in the field of information processing and transmission, harnessing the principles of quantum mechanics. QDNs utilize a quantum teleportation technique through long-distance entanglem...
Natural gradient and parameter estimation for quantum Boltzmann machines
Dhrumil Patel, Mark M. Wilde·Oct 31, 2024
Thermal states play a fundamental role in various areas of physics, and they are becoming increasingly important in quantum information science, with applications related to semi-definite programming, quantum Boltzmann machine learning, Hamiltonian l...
Learning State Preparation Circuits for Quantum Phases of Matter
Hyun-Soo Kim, Isaac H. Kim, Daniel Ranard·Oct 31, 2024
Many-body ground state preparation is an important subroutine used in the simulation of physical systems. In this paper, we introduce a flexible and efficient framework for obtaining a state preparation circuit for a large class of many-body ground s...
Classical simulation of universal measurement-based quantum computation using multipartite Bell scenarios
C. Okay, Atak Talay Yucel, Selman Ipek·Oct 31, 2024
We introduce a new classical simulation algorithm based on non-signaling polytopes of multipartite Bell scenarios, capable of simulating universal measurement-based quantum computation with single-qubit Pauli measurements. In our model, the simultane...
Improved Bounds for Testing Low Stabilizer Complexity States
Saeed Mehraban, Mehrdad Tahmasbi·Oct 31, 2024
Stabilizer states are fundamental families of quantum states with crucial applications such as error correction, quantum computation, and simulation of quantum circuits. In this paper, we study the problem of testing how close or far a quantum state ...
Model Order Reduction for Open Quantum Systems Based on Measurement-adapted Time-coarse Graining
Wentao Fan, Hakan E. Türeci·Oct 30, 2024
Model order reduction encompasses mathematical techniques aimed at reducing the complexity of mathematical models in simulations while retaining the essential characteristics and behaviors of the original model. This is particularly useful in the con...
Quantum Carleman linearization efficiency in nonlinear fluid dynamics
Javier Gonzalez-Conde, D. Lewis, Sachin S. Bharadwaj +1 more·Oct 30, 2024
Computational fluid dynamics (CFD) is a specialized branch of fluid mechanics that utilizes numerical methods and algorithms to solve and analyze fluid-flow problems. One promising avenue to enhance CFD is the use of quantum computing, which has the ...
Crosstalk Attack Resilient RNS Quantum Addition
Bhaskar Gaur, Himanshu Thapliyal·Oct 30, 2024
As quantum computers scale, the rise of multi-user and cloud-based quantum platforms can lead to new security challenges. Attacks within shared execution environments become increasingly feasible due to the crosstalk noise that, in combination with q...
Automorphism-Assisted Quantum Approximate Optimization Algorithm for efficient graph optimization
V. N. Prakash·Oct 29, 2024
In this article we report on the application of the Quantum Approximate Optimization Algorithm (QAOA) to solve the unweighted MaxCut problem on tree-structured graphs. Specifically, we utilize the Nauty (No Automorphisms, Yes?) package to identify gr...
Designing Majorana Quasiparticles in InAsP Quantum Dots in InP Nanowires with Variational Quantum Eigenvalue Solver
Mahan Mohseni, Iann Cunha, D. Miravet +5 more·Oct 29, 2024
This work presents steps toward the design of Majorana zero modes (MZM) in InAsP quantum dots embedded in an InP semiconducting nanowire in contact with a p‐type superconductor described by the Kitaev Hamiltonian. The single‐particle spectrum is obta...
Quantum simulation of the microscopic to macroscopic crossover using superconducting quantum impurities
A. Burshtein, Moshe Goldstein·Oct 29, 2024
Despite being a pillar of quantum mechanics, little attention has been paid to the onset of Fermi's golden rule as a discrete microscopic bath of modes approaches the macroscopic thermodynamic limit and forms a continuum. Motivated by recent experime...
Complex-phase extensions of the Szegedy quantum walk on graphs
S. A. Ortega, M. Martin-Delgado·Oct 29, 2024
This work introduces a graph-phased Szegedy's quantum walk, which incorporates link phases and local arbitrary phase rotations (APR), unlocking new possibilities for quantum algorithm efficiency. We demonstrate how to adapt quantum circuits to these ...
Stabilizing Non-Abelian Topological Order against Heralded Noise via Local Lindbladian Dynamics
Sanket Chirame, Abhinav Prem, Sarang Gopalakrishnan +1 more·Oct 28, 2024
An important open question for the current generation of highly controllable quantum devices is understanding which phases can be realized as stable steady-states under local quantum dynamics. In this work, we show how robust steady-state phases with...