Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Simulating a quasiparticle on a quantum device
Rimika Jaiswal, I. Lovas, L. Balents·Sep 13, 2024
We propose a variational approach to explore quasiparticle excitations in interacting quantum many-body systems, motivated by the potential in leveraging near-term noisy intermediate scale quantum devices for quantum state preparation. By exploiting ...
Benchmarking the performance of quantum computing software for quantum circuit creation, manipulation and compilation
P. Nation, A. Saki, Sebastian Brandhofer +4 more·Sep 13, 2024
We present Benchpress, a benchmarking suite for evaluating the performance and range of functionality of multiple quantum computing software development kits. This suite consists of a collection of over 1,000 tests measuring key performance metrics f...
Classification of electronic structures and state preparation for quantum computation of reaction chemistry
Maximilian Morchen, Guang Hao Low, Thomas Weymuth +3 more·Sep 13, 2024
Quantum computation for chemical problems will require the construction of guiding states with sufficient overlap with a target state. Since easily available and initializable mean-field states are characterized by an overlap that is reduced for mult...
Unitary and Open Scattering Quantum Walks on Graphs
Alain Joye·Sep 12, 2024
We study a class of Unitary Quantum Walks on arbitrary graphs, parameterized by a family of scattering matrices. These Scattering Quantum Walks model the discrete dynamics of a system on the edges of the graph, with a scattering process at each verte...
Non-unital noise in a superconducting quantum computer as a computational resource for reservoir computing
Francesco Monzani, Emanuele Ricci, Luca Nigro +1 more·Sep 12, 2024
We identify a noise model that ensures the functioning of an echo state network employing a gate-based quantum computer for reservoir computing applications. Energy dissipation induced by amplitude damping drastically improves the short-term memory c...
Quantum Entanglement Allocation through a Central Hub
Yuanyi Chen, Xia Liu, Chenghong Zhu +3 more·Sep 12, 2024
Establishing a fully functional quantum internet relies on the efficient allocation of multipartite entangled states, which enables advanced quantum communication protocols, secure multipartite quantum key distribution, and distributed quantum comput...
Towards Scalable Quantum Networks
Connor Howe, Mohsin Aziz, Ali Anwar·Sep 12, 2024
This paper presents a comprehensive study on the scalability challenges and opportunities in quantum communication networks, with the goal of determining parameters that impact networks most as well as the trends that appear when scaling networks. We...
Quantum resource theory of coding for error correction
Dong-Sheng Wang, Yuan-Dong Liu, Yun-Jiang Wang +1 more·Sep 12, 2024
Error-correction codes are central for fault-tolerant information processing. Here we develop a rigorous framework to describe various coding models based on quantum resource theory of superchannels. We find, by treating codings as superchannels, a h...
LightSABRE: A Lightweight and Enhanced SABRE Algorithm
H. Zou, Matthew Treinish, K. Hartman +2 more·Sep 12, 2024
We introduce LightSABRE, a significant enhancement of the SABRE algorithm that advances both runtime efficiency and circuit quality. LightSABRE addresses the increasing demands of modern quantum hardware, which can now accommodate complex scenarios, ...
C3-VQA: Cryogenic Counter-Based Coprocessor for Variational Quantum Algorithms
Yosuke Ueno, Satoshi Imamura, Yuna Tomida +5 more·Sep 12, 2024
Cryogenic quantum computers play a leading role in demonstrating quantum advantage. Given the severe constraints on the cooling capacity in cryogenic environments, thermal design is crucial for the scalability of these computers. The sources of heat ...
Faster Algorithmic Quantum and Classical Simulations by Corrected Product Formulas
Mohsen Bagherimehrab, Luis Mantilla Calderón, Dominic W. Berry +6 more·Sep 12, 2024
Hamiltonian simulation using product formulas is arguably the most straightforward and practical approach for algorithmic simulation of a quantum system's dynamics on a quantum computer. Here we present corrected product formulas (CPFs), a variation ...
Optimizing qubit control pulses for state preparation
Annika S. Wiening, Joern Bergendahl, Vicente Leyton-Ortega +1 more·Sep 12, 2024
In the burgeoning field of quantum computing, the precise design and optimization of quantum pulses are essential for enhancing qubit operation fidelity. This study focuses on refining the pulse engineering techniques for superconducting qubits, empl...
Weaver: A Retargetable Compiler Framework for FPQA Quantum Architectures
Oguzcan Kirmemis, Francisco Romão, Emmanouil Giortamis +1 more·Sep 12, 2024
While the prominent quantum computing architectures are based on superconducting technology, new quantum hardware technologies are emerging, such as Trapped Ions, Neutral Atoms (or FPQAs), Silicon Spin Qubits, etc. This diverse set of technologies pr...
Contrasting Statistical Phase Estimation with the Variational Quantum Eigensolver in the era of Early Fault Tolerant Quantum Computation
M. Chung, Andreas Thomasen, Henry Liao +1 more·Sep 12, 2024
In this review, we give an overview of the proposed applications in the early-FTQC (EFTQC) era. Starting from the error correction architecture for EFTQC device, we first review the recently developed space-time efficient analogue rotation (STAR) arc...
Towards Scalable Quantum Key Distribution: A Machine Learning-Based Cascade Protocol Approach
H. Al-Mohammed, S. Al-kuwari, H. Kuniyil +1 more·Sep 12, 2024
Quantum Key Distribution (QKD) is a pivotal technology in the quest for secure communication, harnessing the power of quantum mechanics to ensure robust data protection. However, scaling QKD to meet the demands of high-speed, real-world applications ...
Demonstration of Scully–Drühl-type quantum erasers on quantum computers
Bo-Hung Chen, Dah-Wei Chiou, Hsiu-Chuan Hsu·Sep 12, 2024
We present a novel quantum circuit that genuinely implements the Scully–Drühl-type delayed-choice quantum eraser, where the two recorders of the which-way information directly interact with the signal qubit and remain spatially separated. Experiments...
Long distance spin shuttling enabled by few-parameter velocity optimization
Alessandro David, Akshay Menon Pazhedath, L. Schreiber +3 more·Sep 11, 2024
Spin qubit shuttling via moving conveyor-mode quantum dots in Si/SiGe offers a promising route to scalable miniaturized quantum computing. Recent modeling of dephasing via valley degrees of freedom and well disorder dictate a slow shutting speed whic...
Quantum many-body simulation of finite-temperature systems with sampling a series expansion of a quantum imaginary-time evolution
Norifumi Matsumoto, Shoichiro Tsutsui, Yuya O. Nakagawa +5 more·Sep 11, 2024
Simulating thermal-equilibrium properties at finite temperature is crucial for studying quantum many-body systems. Quantum computers are expected to enable us to simulate large systems at finite temperatures, overcoming challenges faced by classical ...
Variational LOCC-Assisted Quantum Circuits for Long-Range Entangled States.
Yuxuan Yan, Muzhou Ma, You Zhou +1 more·Sep 11, 2024
Long-range entanglement is an important quantum resource, particularly for topological orders and quantum error correction. In reality, preparing long-range entangled states requires a deep unitary circuit, which poses significant experimental challe...
GAN Decoder on a Quantum Toric Code for Noise‐Robust Quantum Teleportation
Jiaxin Li, Zhimin Wang, Alberto Ferrara +2 more·Sep 11, 2024
A generative adversarial network (GAN)‐based decoder is proposed for quantum topological codes and applied it to enhance a quantum teleportation protocol under depolarizing noise. By constructing and training the GAN's generator and discriminator net...