Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Adiabatic training for Variational Quantum Algorithms
Ernesto Acosta, C. C. Gutierrez, Guillermo Botella Juan +1 more·Oct 24, 2024
This paper presents a new hybrid Quantum Machine Learning (QML) model composed of three elements: a classical computer in charge of the data preparation and interpretation; a Gate-based Quantum Computer running the Variational Quantum Algorithm (VQA)...
How to Design a Quantum Streaming Algorithm Without Knowing Anything About Quantum Computing
John Kallaugher, Ojas Parekh, N. Voronova·Oct 24, 2024
A series of work [GKK+08, Kal22, KPV24] has shown that asymptotic advantages in space complexity are possible for quantum algorithms over their classical counterparts in the streaming model. We give a simple quantum sketch that encompasses all these ...
Verifying Quantum Circuits with Level-Synchronized Tree Automata
P. Abdulla, Yo-Ga Chen, Yu-Fang Chen +5 more·Oct 24, 2024
We present a new method for the verification of quantum circuits based on a novel symbolic representation of sets of quantum states using level-synchronized tree automata (LSTAs). LSTAs extend classical tree automata by labeling each transition with ...
The Learning Stabilizers with Noise problem
Alexander Poremba, Yihui Quek, Peter W. Shor·Oct 24, 2024
Random classical codes have good error correcting properties, and yet they are notoriously hard to decode in practice. Despite many decades of extensive study, the fastest known algorithms still run in exponential time. The Learning Parity with Noise...
The complexity of entanglement embezzlement
Tal Schwartzman·Oct 24, 2024
Embezzlement of entanglement is the counterintuitive process in which entanglement is extracted from a resource system using local unitary operations, with almost no detectable change in the resource's state. It has recently been argued that any stat...
A Distributed and Parallel (k, n) QSS Scheme with Verification Capability
Theodore Andronikos·Oct 24, 2024
This paper presents a new quantum secret sharing scheme featuring a (k, n) threshold and built-in verification. This innovative protocol takes advantage of entanglement and unfolds in three distinct phases. In anticipation of the coming of the distri...
Cryogenic optical-to-microwave conversion using Si photonic integrated circuit Ge photodiodes
D. Julien-Neitzert, Edward K. Leung, N. Islam +5 more·Oct 24, 2024
Integrated circuit technology enables the scaling of circuit complexity and functionality while maintaining manufacturability and reliability. Integration is expected to play an important role in quantum information technologies, including in the hig...
Quantum linear system algorithm with optimal queries to initial state preparation
Guang Hao Low, Yuan Su·Oct 23, 2024
Quantum algorithms for linear systems produce the solution state $A^{-1}|b\rangle$ by querying two oracles: $O_A$ that block encodes the coefficient matrix and $O_b$ that prepares the initial state. We present a quantum linear system algorithm making...
Iteratively decoded magic state distillation
Kwok Ho Wan·Oct 23, 2024
We present numerical simulation results for the 7-to-1 and 15-to-1 state distillation circuits, constructed using transversal CNOTs acting on multiple surface code patches. The distillation circuits are decoded iteratively using the method outlined i...
Controlling coherence between waveguide-coupled quantum dots
D. Hallett, J. Wiercinski, L. Hallacy +10 more·Oct 23, 2024
We present a novel waveguide design that incorporates a split-diode structure, allowing independent electrical control of transition energies of multiple emitters over a wide range with minimal loss in waveguide coupling efficiency. We use this desig...
Fast classical simulation of qubit-qudit hybrid systems
Haemanth Velmurugan, Arnav Das, Turbasu Chatterjee +3 more·Oct 23, 2024
Simulating quantum circuits is a computationally intensive task that relies heavily on tensor products and matrix multiplications, which can be inefficient. Recent advancements, eliminate the need for tensor products and matrix multiplications, offer...
Dynamic Spectrum Access for Ambient Backscatter Communication-assisted D2D Systems with Quantum Reinforcement Learning
Nguyen Van Huynh, Bolun Zhang, Dinh-Hieu Tran +5 more·Oct 23, 2024
Spectrum access is an essential problem in device-to-device (D2D) communications. However, with the recent growth in the number of mobile devices, the wireless spectrum is becoming scarce, resulting in low spectral efficiency for D2D communications. ...
Cooling limits of coherent refrigerators
Rodolfo Reis Soldati, D. Dasari, Jörg Wrachtrup +1 more·Oct 23, 2024
Refrigeration limits are of fundamental and practical importance. We here show that quantum systems can be cooled below existing incoherent cooling bounds by employing coherent virtual qubits, even if the amount of coherence is incompletely known. Vi...
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...
Simulating quantum chaos without chaos
Andi Gu, Yihui Quek, Susanne F. Yelin +2 more·Oct 23, 2024
Quantum chaos is a quantum many-body phenomenon that is associated with a number of intricate properties, such as level repulsion in energy spectra or distinct scalings of out-of-time ordered correlation functions. In this work, we introduce a novel ...
Quantum Algorithms for Optimizing Mycorrhizal Inoculants Using Mycoponics: A Novel Framework for Nutrient Transfer and Protein Discovery in Precision Agriculture
Abhiram Sripat·Oct 23, 2024
Mycorrhizal fungi form vast subterranean networks that are critical for plant nutrient uptake, carbon sequestration, and ecosystem resilience. Despite their ecological importance, optimizing these networks for precision agriculture, forestry,and carb...
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...
Engineering bosonic codes with quantum lattice gates
Lingzhen Guo, Tangyou Huang, Lei Du·Oct 22, 2024
Bosonic codes offer a hardware-efficient approach to encoding and protecting quantum information with a single continuous-variable bosonic system. However, previous quantum gates lack analytical methods for decomposing quantum circuits and require co...
Solving the Independent Domination Problem by the Quantum Approximate Optimization Algorithm
Haoqian Pan, Changhong Lu·Oct 22, 2024
In the wake of quantum computing advancements and quantum algorithmic progress, quantum algorithms are increasingly being employed to address a myriad of combinatorial optimization problems. Among these, the Independent Domination Problem (IDP), a de...
Bounding the sample fluctuation for pure-state certification with local random measurement
Langxuan Chen, Pengfei Zhang·Oct 22, 2024
Remarkable breakthroughs in quantum science and technology are demanding for more efficient methods in analyzing quantum many-body states. A significant challenge in this field is to verify whether a quantum state prepared by quantum devices in the l...