Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,526 papers in 12 months (-19% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Algorithm for Imaginary-Time Green's Functions.
Diksha Dhawan, D. Zgid, Mario Motta·Sep 18, 2023
Green's function methods lead to ab initio, systematically improvable simulations of molecules and materials while providing access to multiple experimentally observable properties such as the density of states and the spectral function. The calculat...
Quantum computation of π → π* and n → π* excited states of aromatic heterocycles
Maria A. Castellanos, Mario Motta, Julia E Rice·Sep 18, 2023
The computation of excited electronic states is an important application for quantum computers. In this work, we simulate the excited state spectra of four aromatic heterocycles on IBM superconducting quantum computers, focussing on active spaces of ...
Optimal number-conserved linear encoding for practical fermionic simulation
M. H. Cheng, Yu-Cheng Chen, Qian Wang +5 more·Sep 17, 2023
Number-conserved subspace encoding reduces resources needed for quantum simulations, but scalable complexity trade-off bounds for M modes and N particles with O(NlogM) qubits have remained unknown. We study qubit-gate-measurement trade-offs through t...
Quantum Simulations for Carbon Capture on Metal-Organic Frameworks
Gopal Ramesh Dahale·Sep 17, 2023
Direct air capture of Carbon Dioxide is a technical solution that does not rely on natural processes to capture CO2 from the atmosphere. In DAC, the filter material is designed to specifically bind CO2 molecules. Hence a high-capacity filter is sough...
S-QGPU: Shared quantum gate processing unit for distributed quantum computing
Shengwang Du, Yufei Ding, Chunming Qiao·Sep 15, 2023
We propose a distributed quantum computing (DQC) architecture in which individual small-sized quantum computers are connected to a shared quantum gate processing unit (S-QGPU). The S-QGPU comprises a collection of hybrid two-qubit gate modules for re...
Overhead-constrained circuit knitting for variational quantum dynamics
G. Gentinetta, Friederike Metz, Giuseppe Carleo·Sep 14, 2023
Simulating the dynamics of large quantum systems is a formidable yet vital pursuit for obtaining a deeper understanding of quantum mechanical phenomena. While quantum computers hold great promise for speeding up such simulations, their practical appl...
Predicting Expressibility of Parameterized Quantum Circuits Using Graph Neural Network
Shamminuj Aktar, Andreas Bärtschi, Abdel-Hameed A. Badawy +2 more·Sep 13, 2023
Parameterized Quantum Circuits (PQCs) are essential to quantum machine learning and optimization algorithms. The expressibility of PQCs, which measures their ability to represent a wide range of quantum states, is a critical factor influencing their ...
Toward Consistent High-Fidelity Quantum Learning on Unstable Devices via Efficient In-Situ Calibration
Zhi-Yuan Hu, Robert Wolle, Mingzhen Tian +3 more·Sep 12, 2023
In the near-term noisy intermediate-scale quantum (NISQ) era, high noise will significantly reduce the fidelity of quantum computing. What's worse, recent works reveal that the noise on quantum devices is not stable, that is, the noise is dynamically...
Quantum algorithms for the simulation of perturbative QCD processes
Herschel A. Chawdhry, M. Pellen·Sep 12, 2023
Quantum computers are expected to give major speed-ups for the simulation of quantum systems. In these conference proceedings, we discuss quantum algorithms for the simulation of perturbative Quantum Chromodynamics (QCD) processes. In particular, we ...
Accelerating quantum optimal control of multi-qubit systems with symmetry-based Hamiltonian transformations
Xian Wang, M. Okyay, Anshuman Kumar +1 more·Sep 12, 2023
We present a novel, computationally efficient approach to accelerate quantum optimal control calculations of large multi-qubit systems used in a variety of quantum computing applications. By leveraging the intrinsic symmetry of finite groups, the Hil...
Proof-of-Concept Quantum Simulator Based on Molecular Spin Qudits
S. Chicco, G. Allodi, A. Chiesa +6 more·Sep 11, 2023
The use of d-level qudits instead of two-level qubits can largely increase the power of quantum logic for many applications, ranging from quantum simulations to quantum error correction. Magnetic molecules are ideal spin systems to realize these larg...
Performance of Commercial Quantum Annealing Solvers for the Capacitated Vehicle Routing Problem
Salvatore Sinno, Thomas Groß, Alan Mott +4 more·Sep 11, 2023
Quantum annealing (QA) is a heuristic search algorithm that can run on Adiabatic Quantum Computation (AQC) processors to solve combinatorial optimization problems. Although theoretical studies and simulations on classic hardware have shown encouragin...
Solving Systems of Linear Equations: HHL from a Tensor Networks Perspective
Alejandro Mata Ali, Iñigo Pérez Delgado, Marina Ristol Roura +2 more·Sep 11, 2023
This work presents a new approach for simulating the HHL linear systems of equations solver algorithm with tensor networks. First, a novel HHL in the qudits formalism, the generalization of qubits, is developed, and then its operations are transforme...
Fast Simulation of High-Depth QAOA Circuits
Danylo Lykov, Ruslan Shaydulin, Yue Sun +2 more·Sep 9, 2023
Until high-fidelity quantum computers with a large number of qubits become widely available, classical simulation remains a vital tool for algorithm design, tuning, and validation. We present a simulator for the Quantum Approximate Optimization Algor...
Deformed Fredkin model for the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>ν</mml:mi><mml:mo>=</mml:mo><mml:mn>5</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math> Moore-Read state on thin cylinders
Cristian Voinea, Songyang Pu, A. Kirmani +3 more·Sep 8, 2023
We propose a frustration-free model for the Moore-Read quantum Hall state on sufficiently thin cylinders with circumferences $\lesssim 7$ magnetic lengths. While the Moore-Read Hamiltonian involves complicated long-range interactions between triplets...
Quantum signal processing with the one-dimensional quantum Ising model
V. M. Bastidas, S. Zeytinoğlu, Z. M. Rossi +2 more·Sep 8, 2023
Quantum Signal Processing (QSP) has emerged as a promising framework to manipulate and determine properties of quantum systems. QSP not only unifies most existing quantum algorithms but also provides tools to discover new ones. Quantum signal process...
Extremum Seeking Control of Quantum Gates
E. Abbasgholinejad, Haoqin Deng, John Gamble IonQ +4 more·Sep 8, 2023
To be useful for quantum computation, gate operations must be maintained at high fidelities over long periods of time. In addition to decoherence, slow drifts in control hardware leads to inaccurate gates, causing the quality of operation of as-built...
Accurate hyperfine tensors for solid state quantum applications: case of the NV center in diamond
Istv'an Tak'acs, Viktor Iv'ady·Sep 7, 2023
The decoherence of point defect qubits is often governed by the electron spin-nuclear spin hyperfine interaction that can be parameterized by using ab inito calculations in principle. So far most of the theoretical works have focused on the hyperfine...
New quantum LDPC codes based on Euclidean Geometry
Ya’nan Feng, Chuchen Tang, Chen‐Ming Bai·Sep 7, 2023
With the advancements in quantum error correction technique, quantum low density parity check (QLDPC) codes have emerged as a promising area in the field of quantum error correction. This paper focuses on the requirement of QLDPC codes based on point...
Surface reconstruction induced anisotropic energy landscape of bismuth monomers and dimers on the Si(001) surface
Haonan Huang, C. Schon, C. Ast·Sep 6, 2023
Spin qubits have attracted tremendous attention in the effort of building quantum computers over the years. Natural atomic scale candidates are group-V dopants in silicon, not only showing ultra-long lifetimes but also being compatible with current s...