Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Edge Intelligence in Satellite-Terrestrial Networks With Hybrid Quantum Computing
Siyue Huang, Lifeng Wang, Xin Wang +3 more·Sep 30, 2024
This letter exploits the potential of edge intelligence empowered satellite-terrestrial networks, where users’ computation tasks are offloaded to the satellites or terrestrial base stations. The computation task offloading in such networks involves t...
Quantum Fast Implementation of Functional Bootstrapping and Private Information Retrieval
Guangsheng Ma, Hongbo Li·Sep 30, 2024
Classical privacy-preserving computation techniques safeguard sensitive data in cloud computing, but often suffer from low computational efficiency. In this paper, we show that employing a single quantum server can significantly enhance both the effi...
Information processing at the speed of light
M. AbuGhanem·Sep 29, 2024
In recent years, quantum computing has made significant strides, particularly in light-based technology. The introduction of quantum photonic chips has ushered in an era marked by scalability, stability, and cost-effectiveness, paving the way for inn...
Exponential separation in quantum query complexity of the quantum switch with respect to simulations with standard quantum circuits
Hl'er Kristj'ansson, Tatsuki Odake, Satoshi Yoshida +4 more·Sep 27, 2024
Quantum theory is consistent with a computational model permitting black-box operations to be applied in an indefinite causal order, going beyond the standard circuit model of computation. The quantum switch -- the simplest such example -- has been s...
Optimal Quantum Purity Amplification
Zhaoyi Li, Honghao Fu, Takuya Isogawa +2 more·Sep 26, 2024
Quantum purity amplification (QPA) provides a novel approach to counteracting the pervasive noise that degrades quantum states. We present the optimal QPA protocol for general quantum systems and global noise, resolving a two-decade open problem. Und...
QuForge: A Library for Qudits Simulation
Tiago de Souza Farias, Lucas Friedrich, Jonas Maziero·Sep 26, 2024
Quantum computing with qudits, an extension of qubits to multiple levels, is a research field less mature than qubit-based quantum computing. However, qudits can offer some advantages over qubits, by representing information with fewer separated comp...
Codesigned counterdiabatic quantum optimization on a photonic quantum processor
Xiao-Wen Shang, Xuan Chen, N. N. Hegade +6 more·Sep 26, 2024
Codesign, an integral part of computer architecture referring to the information interaction in hardware-software stack, is able to boost the algorithm mapping and execution in the computer hardware. This well applies to the noisy intermediate-scale ...
Andreev qubit readout from dynamic interference supercurrent
Xian-Peng Zhang, Chuanchang Zeng, Zhen-Biao Yang +2 more·Sep 25, 2024
Nondemolition protocols use ancilla qubits to identify the fragile quantum state of a qubit without destroying its encoded information, thus playing a crucial role in nondestructive quantum measurements particularly relevant for quantum error correct...
Heralded optical entanglement distribution via lossy quantum channels: a comparative study.
Wan Zo, Seungbeom Chin, Yong-Su Kim·Sep 25, 2024
Quantum entanglement serves as a foundational resource for various quantum technologies. In optical systems, entanglement distribution relies on the indistinguishability and spatial overlap of photons. Heralded schemes play a crucial role in ensuring...
Quantum error correction of qudits beyond break-even
Benjamin L. Brock, Shraddha Singh, A. Eickbusch +5 more·Sep 23, 2024
Hilbert space dimension is a key resource for quantum information processing1,2. Not only is a large overall Hilbert space an essential requirement for quantum error correction, but a large local Hilbert space can also be advantageous for realizing g...
Efficient Measurement-Driven Eigenenergy Estimation with Classical Shadows
Yizhi Shen, Alex Buzali, Hong-Ye Hu +4 more·Sep 20, 2024
Quantum algorithms exploiting real-time evolution under a target Hamiltonian have demonstrated remarkable efficiency in extracting key spectral information. However, the broader potential of these methods, particularly beyond ground state calculation...
Information Reconciliation for Continuous-Variable Quantum Key Distribution with $β> 1$ Using Short Blocklength Error Correction Codes: Proposal and Concerns
Kadir Gümüş, João dos Reis Frazão, Aaron Albores-Mejia +5 more·Sep 20, 2024
In this paper, we introduce a reconciliation protocol with a two-step error correction scheme that uses a short-blocklength, low-rate code and a long-blocklength, high-rate code. We simulate the protocol using a short-block-length low-density parity-...
Quantum-Assisted Joint Virtual Network Function Deployment and Maximum Flow Routing for Space Information Networks
Yu Zhang, Yanmin Gong, Lei Fan +3 more·Sep 20, 2024
Network function virtualization (NFV)-enabled space information network (SIN) has emerged as a promising method to facilitate global coverage and seamless service. This paper proposes a novel NFV-enabled SIN to provide end-to-end communication and co...
Asymmetry Control in a Parametric Oscillator for the Quantum Simulation of Chemical Activation
Alejandro Cros Carrillo de Albornoz, Rodrigo G. Cortiñas, Max Schäfer +8 more·Sep 19, 2024
Dissipative tunneling remains a cornerstone effect in quantum mechanics. In chemistry, it plays a crucial role in governing the rates of chemical reactions, often modeled as the motion along the reaction coordinate from one potential well to another....
Dephasing in the central spin problem with long-range Ising spin-bath coupling
K. B. Attar, N. Bar-Gill·Sep 19, 2024
The study of coherence dynamics in open quantum systems, specifically addressing various physical realizations of quantum systems and environments, is a long-standing and central pillar of quantum science and technology. As such, a large body of work...
Quantum resources of quantum and classical variational methods
Thomas Spriggs, Arash Ahmadi, Bo-Ting Chen +1 more·Sep 19, 2024
Variational techniques have long been at the heart of atomic, solid-state, and many-body physics. They have recently extended to quantum and classical machine learning, providing a basis for representing quantum states via neural networks. These meth...
Cross-platform protected qubits from entanglement
N. Chakraborty, R. Moessner, Benoît Douçot·Sep 19, 2024
A crucial ingredient for scalable, fault-tolerant quantum computing is the construction of logical qubits with low error rates and intrinsic noise protection. We propose a construction for such hardware-level noise protection, in which the qubits are...
Towards practical secure delegated quantum computing with semi-classical light
Boris Bourdoncle, Pierre-Emmanuel Emeriau, Paul Hilaire +3 more·Sep 18, 2024
Secure Delegated Quantum Computation (SDQC) protocols are a vital piece of the future quantum information processing global architecture since they allow end-users to perform their valuable computations on remote quantum servers without fear that a m...
Hardware-efficient preparation of architecture-specific graph states on near-term quantum computers
Sebastian Brandhofer, I. Polian, Stefanie Barz +1 more·Sep 17, 2024
Highly entangled quantum states are an ingredient in numerous applications in quantum computing. However, preparing these highly entangled quantum states on currently available quantum computers at high fidelity is limited by ubiquitous errors. Besid...
Engineering Topological States and Quantum‐Inspired Information Processing Using Classical Circuits
Tian Chen, Weixuan Zhang, Deyuan Zou +2 more·Sep 16, 2024
Based on the correspondence between circuit Laplacian and Schrodinger equations, recent investigations have shown that classical electric circuits can be used to simulate various topological physics and Schrödinger's equation. Furthermore, a series o...