Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Solving the Lipkin model using quantum computers with two qubits only with a hybrid quantum-classical technique based on the generator coordinate method
Yann Beaujeault-Taudière, Denis Lacroix·Dec 7, 2023
The possibility of using the generator coordinate method (GCM) using hybrid quantum-classical algorithms with reduced quantum resources is discussed. The task of preparing the basis states and calculating the various kernels involved in the GCM is as...
Comparative study on compact quantum circuits of hybrid quantum-classical algorithms for quantum impurity models
Rihito Sakurai, Oliver J. Backhouse, George H Booth +2 more·Dec 7, 2023
Predicting the properties of strongly correlated materials is a significant challenge in condensed matter theory. The widely used dynamical mean-field theory faces difficulty in solving quantum impurity models numerically. Hybrid quantum--classical a...
Dual-VQE: A quantum algorithm to lower bound the ground-state energy
Hanna Westerheim, Jingxuan Chen, Zoë Holmes +6 more·Dec 5, 2023
The variational quantum eigensolver (VQE) is a hybrid quantum-classical variational algorithm that produces an upper-bound estimate of the ground-state energy of a Hamiltonian. As quantum computers become more powerful and go beyond the reach of clas...
Quantum Multiple Kernel Learning in Financial Classification Tasks
S. Miyabe, Brian Quanz, Noriaki Shimada +11 more·Dec 1, 2023
Financial services is a prospect industry where unlocked near-term quantum utility could yield profitable potential, and, in particular, quantum machine learning algorithms could potentially benefit businesses by improving the quality of predictive m...
Subspace methods for electronic structure simulations on quantum computers
Mario Motta, William Kirby, I. Liepuoniute +7 more·Nov 30, 2023
Quantum subspace methods (QSMs) are a class of quantum computing algorithms where the time-independent Schrödinger equation for a quantum system is projected onto a subspace of the underlying Hilbert space. This projection transforms the Schrödinger ...
Adaptive circuit learning of born machine: towards realization of amplitude embedding and quantum data loading
Chun-Tse Li, Hao-Chung Cheng·Nov 29, 2023
Quantum data loading plays a central role in quantum algorithms and quantum information processing. Many quantum algorithms hinge on the ability to prepare arbitrary superposition states as a subroutine, with claims of exponential speedups often pred...
Simulating Quantum Computations on Classical Machines: A Survey
Kieran Young, Marcus Scese, Ali Ebnenasir·Nov 28, 2023
We present a comprehensive study of quantum simulation methods and quantum simulators for classical computers. We first study an exhaustive set of 150+ simulators and quantum libraries. Then, we short-list the simulators that are actively maintained ...
Mapping quantum circuits to shallow-depth measurement patterns based on graph states
Thierry N. Kaldenbach, Matthias Heller·Nov 27, 2023
The paradigm of measurement-based quantum computing (MBQC) starts from a highly entangled resource state on which unitary operations are executed through adaptive measurements and corrections ensuring determinism. This is set in contrast to the more ...
From nonreciprocal to charge-4e supercurrent in Ge-based Josephson devices with tunable harmonic content
Axel Leblanc, Chotivut Tangchingchai, Z. S. Momtaz +11 more·Nov 26, 2023
Hybrid superconductor(S)-semiconductor(Sm) devices bring a range of functionalities into superconducting circuits. In particular, hybrid parity-protected qubits and Josephson diodes were recently proposed and experimentally demonstrated. Such devices...
Hybrid Circuit Mapping: Leveraging the Full Spectrum of Computational Capabilities of Neutral Atom Quantum Computers
Ludwig Schmid, Sunghye Park, Robert Wille·Nov 23, 2023
Quantum computing based on Neutral Atoms (NAs) provides a wide range of computational capabilities, encompassing high-fidelity long-range interactions with native multi-qubit gates and the ability to shuttle arrays of qubits. While, previously, these...
Single-shot Quantum Signal Processing Interferometry
Jasmine Sinanan-Singh, G. Mintzer, I. Chuang +1 more·Nov 22, 2023
Quantum systems of infinite dimension, such as bosonic oscillators, provide vast resources for quantum sensing. Yet, a general theory on how to manipulate such bosonic modes for sensing beyond parameter estimation is unknown. We present a general alg...
Hybrid III-V/Silicon Quantum Photonic Device Generating Broadband Entangled Photon Pairs
J. Schuhmann, L. Lazzari, M. Morassi +8 more·Nov 21, 2023
The demand for integrated photonic chips combining the generation and manipulation of quantum states of light is steadily increasing, driven by the need for compact and scalable platforms for quantum information technologies. While photonic circuits ...
Testing the Accuracy of Surface Code Decoders
Arshpreet Singh Maan, A. Paler·Nov 21, 2023
Large-scale, fault-tolerant quantum computations will be enabled by quantum error-correcting codes (QECC). This work presents the first systematic technique to test the accuracy and effectiveness of different QECC decoding schemes by comparing a look...
Mod2VQLS: a Variational Quantum Algorithm for Solving Systems of Linear Equations Modulo 2
Willie Aboumrad, Dominic Widdows·Nov 21, 2023
This paper presents a system for solving binary-valued linear equations using quantum computers. The system is called Mod2VQLS, which stands for Modulo 2 Variational Quantum Linear Solver. As far as we know, this is the first such proposal. The desig...
Nav-Q: quantum deep reinforcement learning for collision-free navigation of self-driving cars
Akash Sinha, A. Macaluso, Matthias Klusch·Nov 20, 2023
The task of collision-free navigation (CFN) of self-driving cars is an NP-hard problem usually tackled using deep reinforcement learning (DRL). While DRL methods have proven to be effective, their implementation requires substantial computing resourc...
Universal quantum processors in spin systems via robust local pulse sequences
Matteo Votto, Johannes Zeiher, B. Vermersch·Nov 17, 2023
We propose a protocol to realize quantum simulation and computation in spin systems with long-range interactions. Our approach relies on the local addressing of single spins with external fields parametrized by Walsh functions. This enables a mapping...
Assessing Quantum Computing Performance for Energy Optimization in a Prosumer Community
C. Mastroianni, F. Plastina, L. Scarcello +2 more·Nov 17, 2023
The efficient management of energy communities relies on the solution of the “prosumer problem”, i.e., the problem of scheduling the household loads on the basis of the user needs, the electricity prices, and the availability of local renewable energ...
Towards Accurate Quantum Chemical Calculations on Noisy Quantum Computers
Naoki Iijima, Satoshi Imamura, M. Morita +4 more·Nov 16, 2023
Variational quantum eigensolver (VQE) is a hybrid quantum-classical algorithm designed for noisy intermediate-scale quantum (NISQ) computers. It is promising for quantum chemical calculations (QCC) because it can calculate the ground-state energy of ...
Realistic Runtime Analysis for Quantum Simplex Computation
S. Ammann, Maximilian Hess, Debora Ramacciotti +10 more·Nov 16, 2023
In recent years, strong expectations have been raised for the possible power of quantum computing for solving difficult optimization problems, based on theoretical, asymptotic worst-case bounds. Can we expect this to have consequences for Linear and ...
Hybrid Classical–Quantum Branch-and-Bound Algorithm for Solving Integer Linear Problems
Claudio Sanavio, Edoardo Tignone, Elisa Ercolessi·Nov 16, 2023
Quantum annealers are suited to solve several logistic optimization problems expressed in the QUBO formulation. However, the solutions proposed by the quantum annealers are generally not optimal, as thermal noise and other disturbing effects arise wh...