Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,669
This Month
367
Today
0
Research Volume
13,704 papers in 12 months (-14% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Polarization-entangled photon pairs generation from a single lithium niobate waveguide with single poling period.
Xinyue Zhang, Sihui Pei, Ni Yao +4 more·Oct 30, 2024
Polarization-entangled photon pairs are essential sources for photonic quantum information processing. However, generating entangled photon pairs with large detuning via spontaneous parametric down-conversion (SPDC) often requires complex configurati...
Optimal convergence rates in trace distance and relative entropy for the quantum central limit theorem
Salman Beigi, Milad M. Goodarzi, Hami Mehrabi·Oct 29, 2024
A quantum analogue of the Central Limit Theorem (CLT) for bosonic system, first introduced by Cushen and Hudson (1971), states that the $n$-fold convolution $ρ^{\boxplus n}$ of an $m$-mode quantum state $ρ$, with zero first moments and finite second ...
Entanglement-enhanced AC magnetometry in the presence of Markovian noises
Thanaporn Sichanugrist, Hajime Fukuda, Takeo Moroi +5 more·Oct 29, 2024
Entanglement is a resource to improve the sensitivity of quantum sensors. In an ideal case, using an entangled state as a probe to detect target fields, we can beat the standard quantum limit by which all classical sensors are bounded. However, since...
A note on polynomial-time tolerant testing stabilizer states
Srinivasan Arunachalam, S. Bravyi, Arkopal Dutt·Oct 29, 2024
We show an improved inverse theorem for the Gowers-$3$ norm of $n$-qubit quantum states $|\psi\rangle$ which states that: for every $\gamma\geq 0$, if the $\textsf{Gowers}(|\psi \rangle,3)^8 \geq \gamma$ then the stabilizer fidelity of $|\psi\rangle$...
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 ...
A fast hybrid classical-quantum algorithm based on block successive over-relaxation for the heat differential equation
Azim Farghadan, M. Farahani, Mohsen Akbari·Oct 29, 2024
The numerical solution of partial differential equations (PDEs) is essential in computational physics. Over the past few decades, various quantum-based methods have been developed to formulate and solve PDEs. Solving PDEs incur high time complexity f...
Classical Algorithms for Constant Approximation of the Ground State Energy of Local Hamiltonians
Franccois Le Gall·Oct 29, 2024
We construct classical algorithms computing an approximation of the ground state energy of an arbitrary $k$-local Hamiltonian acting on $n$ qubits. We first consider the setting where a good ``guiding state''is available, which is the main setting wh...
The convex algebraic geometry of higher-rank numerical ranges
Jonathan Nino-Cortes, Cynthia Vinzant·Oct 29, 2024
The higher-rank numerical range is a convex compact set generalizing the classical numerical range of a square complex matrix, first appearing in the study of quantum error correction. We will discuss some of the real algebraic and convex geometry of...
Statistical Mechanical Mapping and Maximum-Likelihood Thresholds for the Surface Code under Generic Single-Qubit Coherent Errors
Jan Behrends, Benjamin B'eri·Oct 29, 2024
The surface code, one of the leading candidates for quantum error correction, is known to protect encoded quantum information against stochastic, i.e., incoherent errors. The protection against coherent errors, such as from unwanted gate rotations, i...
Hybrid quantum-classical approach for combinatorial problems at hadron colliders
Jacob L. Scott, Zhongtian Dong, Taejoon Kim +2 more·Oct 29, 2024
In recent years, quantum computing has drawn significant interest within the field of high-energy physics. We explore the potential of quantum algorithms to resolve the combinatorial problems in particle physics experiments. As a concrete example, we...
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...
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...
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...
Nearly tight bounds for testing tree tensor network states
Benjamin Lovitz, Angus Lowe·Oct 28, 2024
Tree tensor network states (TTNS) generalize the notion of having low Schmidt-rank to multipartite quantum states, through a parameter known as the bond dimension. This leads to succinct representations of quantum many-body systems with a tree-like e...
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...
Interplay of Unidirectional Quantum Strings in Kagome Rydberg Atom Array
Wei Xu, Xue-Feng Zhang·Oct 28, 2024
Leveraging the rapid development of quantum simulators, the intriguing phenomena of quantum string are observed across various quantum simulation platforms. However, the complex interplay between the quantum strings cannot be well analyzed due to the...
Non-identical anyon algebras from compact-field quantum geometry
O. Kashuba, R. Mummadavarapu, R. -P. Riwar·Oct 28, 2024
Compact scalar field theories on lattices are capable of describing a large class of many-body systems, such as interacting bosons, superconducting circuit networks, spin systems and more. We show that a generic quantum geometric many-body coupling i...
Maneuvering measurement-coherence into measurement-entanglement
Ho-Joon Kim, Soojoon Lee·Oct 28, 2024
Quantum dynamics governs the transformation of static quantum resources, such as coherence and entanglement, in both quantum states and measurements. Prior studies have established that a quantum channel's state-cohering power can be converted into t...
A variational quantum algorithm for the Poisson equation based on the banded Toeplitz systems
Xiao-qi Liu, Yue-Di Qu, Ming Li +1 more·Oct 28, 2024
To solve the Poisson equation it is usually possible to discretize it into solving the corresponding linear system Ax = b. Variational quantum algorithms (VQAs) for the discretized Poisson equation have been studied before. We present a VQA based on ...
Approaches to Simultaneously Solving Variational Quantum Eigensolver Problems
A. Hutchings, Eric Yarnot, Xinpeng Li +4 more·Oct 28, 2024
The variational quantum eigensolver (VQE), a type of variational quantum algorithm, is a hybrid quantum-classical algorithm to find the lowest-energy eigenstate of a particular Hamiltonian. We investigate ways to optimize the VQE solving process on m...