Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Multiple classical noise mitigation by multiobjective robust quantum optimal control
Bowen Shao, Xiaodong Yang, Ran Liu +4 more·Mar 1, 2024
High-quality control is a fundamental requirement for quantum computation, but practically it is often hampered by the presence of various types of noises, which can be static or time-dependent. In many realistic scenarios, multiple noise sources coe...
Noisy intermediate-scale quantum simulation of the one-dimensional wave equation
Lewis Wright, Conor Mc Keever, Jeremy T. First +5 more·Feb 29, 2024
We design and implement quantum circuits for the simulation of the one-dimensional wave equation on the Quantinuum H1-1 quantum computer. The circuit depth of our approach scales as O(n2) for n qubits representing the solution on 2n grid points, and ...
Simple high-saturation-power quantum-limited rf-SQUID-array-based Josephson parametric amplifiers
Ryan Kaufman, Chenxu Liu, K. Cicak +7 more·Feb 29, 2024
High-fidelity quantum non-demolition qubit measurement is critical to error correction and rapid qubit feedback in large-scale quantum computing. High-fidelity readout requires passing a short and strong pulse through the qubit's readout resonator, w...
Boundary treatment for variational quantum simulations of partial differential equations on quantum computers
Paul Over, Sergio Bengoechea, T. Rung +4 more·Feb 28, 2024
The paper presents a variational quantum algorithm to solve initial-boundary value problems described by second-order partial differential equations. The approach uses hybrid classical/quantum hardware that is well suited for quantum computers of the...
Digital quantum simulations of Hong-Ou-Mandel interference
N. Mohan, Rikteem Bhowmick, Devesh Kumar +1 more·Feb 27, 2024
Quantum computers can efficiently simulate quantum systems evolving according to local interactions, making them valuable for exploring quantum many-body dynamics, despite current hardware and algorithmic challenges. In this work, we address the digi...
A heuristic for solving the irregular strip packing problem with quantum optimization
P. Matt, Marco Roth·Feb 27, 2024
We introduce a novel quantum computing heuristic for solving the irregular strip packing problem, a significant challenge in optimizing material usage across various industries. This problem involves arranging a set of irregular polygonal pieces with...
Note on simple and consistent gateset characterization including calibration and decoherence errors
J. Epstein·Feb 27, 2024
Building high-fidelity quantum computers requires efficient methods for the characterization of gate errors that provide actionable information that may be fed back into engineering efforts. Extraction of realistic error models is also critical to ac...
Estimating the electrical energy cost of performing arbitrary state preparation using qubits and qudits in integrated photonic circuits
Maria Carolina Volpato, Gabriel da Silva Sampaio, Pierre-Louis de Assis·Feb 26, 2024
As quantum photonic hardware scales toward computationally relevant sizes, energy consumption has emerged as a key constraint. Programmable photonic integrated circuits, composed of interferometer meshes with tunable phase modulators, provide a flexi...
Quantum error thresholds for gauge-redundant digitizations of lattice field theories
M. Carena, Henry Lamm, Ying-Ying Li +1 more·Feb 26, 2024
In the quantum simulation of lattice gauge theories, gauge symmetry can be either fixed or encoded as a redundancy of the Hilbert space. While gauge-fixing reduces the number of qubits, keeping the gauge redundancy can provide code space to mitigate ...
Noisy Quantum Simulation: Performance and Resource Considerations for the Tavis-Cummings and Heisenberg Models
Alisa Haukisalmi, Daniel Paz Ramos, M. Raasakka +3 more·Feb 26, 2024
Fault-tolerant quantum computers promise the simulation of complex quantum systems beyond the reach of classical computation. In contrast, current noisy intermediate-scale quantum (NISQ) devices are constrained by hardware noise. Consequently, quantu...
Efficient quantum lattice gas automata
Antonio David Bastida Zamora, L. Budinski, Ossi Niemimäki +1 more·Feb 26, 2024
This study presents a novel quantum algorithm for lattice gas automata simulation with a single time step, demonstrating logarithmic complexity in terms of $CX$ gates. The algorithm is composed of three main steps: collision, mapping, and propagation...
Lower bounds for quantum-inspired classical algorithms via communication complexity
Nikhil S. Mande, Changpeng Shao·Feb 24, 2024
Quantum-inspired classical algorithms provide us with a new way to understand the computational power of quantum computers for practically-relevant problems, especially in machine learning. In the past several years, numerous efficient algorithms for...
Ultrafast superconducting qubit readout with the quarton coupler
Yufeng Ye, Jeremy B Kline, Sean Chen +2 more·Feb 24, 2024
Fast, high-fidelity, and quantum nondemolition (QND) qubit readout is an essential element of quantum information processing. For superconducting qubits, state-of-the-art readout is based on a dispersive cross-Kerr coupling between a qubit and its re...
Simulation of dissipative dynamics without interferometers
Fabr'icio Lustosa, R. Serra, Luciano S. Cruz +1 more·Feb 23, 2024
Developing techniques that reduce experimental complexity and minimize errors is of utmost importance for modeling quantum channels. In general, quantum simulators are focused on universal algorithms, whose practical implementation requires extra qub...
Modeling phonon-mediated quasiparticle poisoning in superconducting qubit arrays
E. Yelton, C. P. Larson, V. Iaia +8 more·Feb 23, 2024
Correlated errors caused by ionizing radiation impacting superconducting qubit chips are problematic for quantum error correction. Such impacts generate quasiparticle (QP) excitations in the qubit electrodes, which temporarily reduce qubit coherence ...
Shell-model study of 58Ni using quantum computing algorithm
Bharti Bhoy, P. Stevenson·Feb 23, 2024
This study presents a simulated quantum computing approach for the investigation into the shell-model energy levels of 58Ni through the application of the variational quantum eigensolver (VQE) method in combination with a problem-specific ansatz. The...
Neutron-nucleus dynamics simulations for quantum computers
Soorya Rethinasamy, Ethan Guo, Alexander Wei +2 more·Feb 22, 2024
With a view toward addressing the explosive growth in the computational demands of nuclear structure and reactions modeling, we develop a novel quantum algorithm for neutron-nucleus simulations with general potentials, which provides acceptable bound...
Quantum circuit optimization with AlphaTensor
Francisco J. R. Ruiz, Tuomas Laakkonen, Johannes Bausch +10 more·Feb 22, 2024
A key challenge in realizing fault-tolerant quantum computers is circuit optimization. Focusing on the most expensive gates in fault-tolerant quantum computation (namely, the T gates), we address the problem of T-count optimization, that is, minimizi...
On Schrödingerization based quantum algorithms for linear dynamical systems with inhomogeneous terms
Shi Jin, Nana Liu, Chuwen Ma·Feb 22, 2024
We analyze the Schr\"odingerization method for quantum simulation of a general class of non-unitary dynamics with inhomogeneous source terms. The Schr\"odingerization technique, introduced in [31], transforms any linear ordinary and partial different...
Quantum Annealing and GNN for Solving TSP with QUBO
Haoqi He·Feb 21, 2024
This paper explores the application of Quadratic Unconstrained Binary Optimization (QUBO) models in solving the Travelling Salesman Problem (TSP) through Quantum Annealing algorithms and Graph Neural Networks. Quantum Annealing (QA), a quantum-inspir...