Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Can Constrained Quantum Annealing Be Effective in Noisy Quantum Annealers?
Ryoya Igata, Myonsok I, Yuya Seki +2 more·Oct 23, 2024
We investigate the performance of penalty-based quantum annealing (PQA) and constrained quantum annealing (CQA) in solving the graph partitioning problem under various noise models, including depolarizing, bit-flip, and phase-flip noise. We found tha...
Industrially Fabricated Single-Electron Quantum Dots in Si/Si—Ge Heterostructures
T. Huckemann, Pascal Muster, W. Langheinrich +8 more·Oct 22, 2024
This letter reports the compatibility of heterostructure-based spin qubit devices with industrial CMOS technology. It features Si/Si-Ge quantum dot devices fabricated using Infineon’s 200mm production line within a restricted thermal budget. The devi...
Projective Quantum Eigensolver with Generalized Operators
D. Mondal, Chayan Patra, Dipa Halder +1 more·Oct 21, 2024
Determination of molecular energetics and properties is one of the core challenges in the near-term quantum computing. To this end, hybrid quantum-classical algorithms are preferred for Noisy Intermediate Scale Quantum (NISQ) architectures. The Proje...
Cryogenic Control and Readout Integrated Circuits for Solid-State Quantum Computing
Lingxiao Lei, Heng Huang, Pingxing Chen +1 more·Oct 21, 2024
In the pursuit of quantum computing, solid-state quantum systems, particularly superconducting ones, have made remarkable advancements over the past two decades. However, achieving fault-tolerant quantum computing for next-generation applications nec...
Quantifying the advantages of applying quantum approximate algorithms to portfolio optimisation
Haomu Yuan, Christopher K. Long, H. Lepage +1 more·Oct 21, 2024
We present a quantum algorithm for portfolio optimisation. Specifically, We present an end-to-end quantum approximate optimisation algorithm to solve the discrete global minimum variance portfolio model. This model finds a portfolio of risky assets w...
Assessing Quantum Extreme Learning Machines for Software Testing in Practice
Asmar Muqeet, Hassan Sartaj, Aitor Arrieta +6 more·Oct 20, 2024
Machine learning has been extensively applied for classical software testing activities such as test generation, minimization, and prioritization. Along the same lines, there has been interest in applying quantum machine learning to classical softwar...
Joint encryption and error correction for secure quantum communication
Nitin Jha, Abhishek Parakh, M. Subramaniam·Oct 19, 2024
Secure quantum networks are a bedrock requirement for developing a future quantum internet. However, quantum channels are susceptible to channel noise that introduce errors in the transmitted data. The traditional approach to providing error correcti...
LUCI in the Surface Code with Dropouts
Dripto M. Debroy, Matt McEwen, Craig Gidney +2 more·Oct 18, 2024
Recently, usage of detecting regions facilitated the discovery of new circuits for fault-tolerantly implementing the surface code. Building on these ideas, we present LUCI, a framework for constructing fault-tolerant circuits flexible enough to const...
On the practicality of quantum sieving algorithms for the shortest vector problem
J. F. Doriguello, George Giapitzakis, Alessandro Luongo +1 more·Oct 17, 2024
One of the main candidates of post-quantum cryptography is lattice-based cryptography. Its cryptographic security against quantum attackers is based on the worst-case hardness of lattice problems like the shortest vector problem (SVP), which asks to ...
Continuous-variable fault-tolerant quantum computation under general noise
Takaya Matsuura, N. Menicucci, Hayata Yamasaki·Oct 16, 2024
Quantum error-correcting code in continuous-variable (CV) systems attracts much attention due to its flexibility and high resistance against specific noise. However, the theory of fault tolerance in CV systems is premature and lacks a general strateg...
Generating entanglement of two acoustic modes by driving the qubit in a circuit quantum acoustodynamics system
Mei-Rong Wei, Qi Guo, Gang Li +1 more·Oct 15, 2024
We propose how to generate the entanglement of two long-lived phonon modes in a circuit quantum acoustodynamics system, which consists of a multi-mode high-frequency bulk acoustic wave resonator and a transmon-type superconducting qubit. Two acoustic...
Low-noise Optomechanical Single Phonon-photon Conversion for Quantum Networks
Liu Chen, Alexander Rolf Korsch, Cauê Moreno Kersul +4 more·Oct 14, 2024
Nano-structured optomechanical crystals (OMC) form an interface between mechanical modes with long coherence times and telecom optical photons, ideal for long-distance distribution of quantum information. However, the implementation of scalable quant...
Robustness of near-thermal dynamics on digital quantum computers
E. Chertkov, Yi-Hsiang Chen, M. Lubasch +2 more·Oct 14, 2024
Understanding the impact of gate errors on quantum circuits is crucial to determining the potential applications of quantum computers, especially in the absence of large-scale error-corrected hardware. We put forward analytical arguments, corroborate...
Application of zero-noise extrapolation-based quantum error mitigation to a silicon spin qubit
H. Sohn, Jae-Wan Jung, Jaemin Park +5 more·Oct 14, 2024
As quantum computing advances towards practical applications, reducing errors remains a crucial frontier for developing near-term devices. Errors in the quantum gates and quantum state readout could result in noisy circuits, which would prevent the a...
Efficient Simulation of Open Quantum Systems on NISQ Trapped‐Ion Hardware
Colin Burdine, Nora M. Bauer, G. Siopsis +1 more·Oct 14, 2024
Simulating open quantum systems, which interact with external environments, presents significant challenges on noisy intermediate‐scale quantum (NISQ) devices due to limited qubit resources and noise. In this study, an efficient framework is proposed...
Tackling Coherent Noise in Quantum Computing via Cross-Layer Compiler Optimization
Xiangyu Ren, Junjie Wan, Zhiding Liang +1 more·Oct 12, 2024
Quantum computing hardware is affected by quantum noise that undermine the quality of results of an executed quantum program. Amongst other quantum noises, coherent error that caused by parameter drifting and miscalibration, remains critical. While c...
Analog simulation of noisy quantum circuits
Etienne Granet, Kévin Hémery, Henrik Dreyer·Oct 11, 2024
It is well known that simulating quantum circuits with low but nonzero hardware noise is more difficult than without noise. It requires either to perform density matrix simulations (coming with a space overhead) or to sample over “quantum trajectorie...
Non-volatile Tuning of Cryogenic Optical Resonators
U. Adya, Rui Chen, I-Tung Chen +4 more·Oct 11, 2024
Quantum computing, ultra-low-noise sensing, and high-energy physics experiments often rely on superconducting circuits or semiconductor qubits and devices operating at deep cryogenic temperatures (4K and below). Photonic integrated circuits and inter...
Securing HHL Quantum Algorithm against Quantum Computer Attacks
Yizhuo Tan, Hrvoje Kukina, Jakub Szefer·Oct 10, 2024
The advent of shared, cloud-based quantum computers introduces critical security vulnerabilities. This work identifies and demonstrates two novel attacks against the important HHL algorithm. The two attacks are the Improper Initialization Attack (IIA...
Characterizing quantum codes via the coefficients in Knill-Laflamme conditions
Mengxin Du, Chao Zhang, Y. Poon +1 more·Oct 10, 2024
Quantum error correction (QEC) is essential for protecting quantum information against noise, yet understanding the structure of the Knill-Laflamme (KL) coefficients λij\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepacka...