Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Measurement of parity-dependent energy-phase relation of the low-energy states in a potential artificial Kitaev chain utilizing a transmon qubit
Enna Zhuo, Xiaozhou Yang, Yuyang Huang +18 more·Jan 23, 2025
Artificial Kitaev chains have emerged as a promising platform for realizing topological quantum computing. Once the chains are formed and the Majorana zero modes are braided/fused, reading out the parity of the chains is essential for further verifyi...
Hierarchical Verification of Non-Gaussian Coherence in Bosonic Quantum States.
B. Asenbeck, L. Lachman, Ambroise Boyer +4 more·Jan 23, 2025
Non-Gaussianity, a distinctive characteristic of bosonic quantum states, is pivotal in advancing quantum networks, fault-tolerant quantum computing, and high-precision metrology. Verifying the quantum nature of a state, particularly its non-Gaussian ...
Characterization and optimization of tunable couplers via adiabatic control in superconducting circuits
Xuan Zhang, Xu Zhang, Changling Chen +6 more·Jan 23, 2025
In the pursuit of scalable superconducting quantum computing, tunable couplers have emerged as a pivotal component, offering the flexibility required for complex quantum operations of high performance. In most current architectures of superconducting...
Efficient Mitigation of Error Floors in Quantum Error Correction Using Non-Binary Low-Density Parity-Check Codes
Kenta Kasai·Jan 23, 2025
In this paper, we propose an efficient method to reduce error floors in quantum error correction using non-binary low-density parity-check (LDPC) codes. We identify and classify cycle structures in the parity-check matrix where estimated noise become...
Explicit Construction of Quantum Quasi-Cyclic Low-Density Parity-Check Codes with Column Weight 2 and Girth 12
Daiki Komoto, Kenta Kasai·Jan 23, 2025
This study proposes an explicit construction method for quantum quasi-cyclic low-density parity-check (QC-LDPC) codes with a girth of 12. The proposed method designs parity-check matrices that maximize the girth while maintaining an orthogonal struct...
Quantum Error Correction and $Z(2)$ Lattice Gauge Theories
Seyong Kim·Jan 23, 2025
$Z(2)$ lattice gauge theory plays an important role in the study of the threshold probability of Quantum Error Correction (QEC) for a quantum code. For certain QEC codes, such as the well-known Kitaev's toric/surface code, one can find a mapping of t...
Hamiltonian Simulation via Stochastic Zassenhaus Expansions
Joseph Peetz, P. Narang·Jan 23, 2025
We introduce the stochastic Zassenhaus expansions (SZEs), a class of ancilla-free quantum algorithms for Hamiltonian simulation. These algorithms map nested Zassenhaus formulas onto quantum gates and then employ randomized sampling to minimize circui...
Adaptive Genetic Algorithms for Pulse-Level Quantum Error Mitigation
William Aguilar-Calvo, Santiago N'unez-Corrales·Jan 23, 2025
Noise remains a fundamental challenge in quantum computing, significantly affecting pulse fidelity and overall circuit performance. This paper introduces an adaptive algorithm for pulse-level quantum error mitigation, designed to enhance fidelity by ...
Fast and Provable Tensor-Train Format Tensor Completion via Precondtioned Riemannian Gradient Descent
Fengmiao Bian, Jian-Feng Cai, Xiaoqun Zhang +1 more·Jan 23, 2025
Low-rank tensor completion aims to recover a tensor from partially observed entries, and it is widely applicable in fields such as quantum computing and image processing. Due to the significant advantages of the tensor train (TT) format in handling s...
Native three-body interactions in a superconducting lattice gauge quantum simulator
J. Busnaina, Z. Shi, J. M. Alcaine-Cuervo +4 more·Jan 23, 2025
While universal quantum computers remain under development, analog quantum simulators offer a powerful alternative for understanding complex systems in condensed matter, chemistry, and high-energy physics. One compelling application is the characteri...
Non-unitary Variational Quantum Eigensolver with the Localized Active Space Method and Cost Mitigation
Qiaohong Wang, Ruhee D'Cunha, Abhishek Mitra +4 more·Jan 23, 2025
Accurately describing strongly correlated systems with affordable quantum resources remains a central challenge for quantum chemistry applications on near and intermediate-term quantum computers. The localized active space self-consistent field (LASS...
Distributed Quantum Error Correction Based on Hyperbolic Floquet Codes
Evan Sutcliffe, Bhargavi Jonnadula, C. Le Gall +2 more·Jan 23, 2025
Quantum computing offers significant speedups, but the large number of physical qubits required for quantum error correction introduces engineering challenges for a monolithic architecture. One solution is to distribute the logical quantum computatio...
Rudraksh: A compact and lightweight post-quantum key-encapsulation mechanism
Suparna Kundu, Archisman Ghosh, A. Karmakar +2 more·Jan 23, 2025
Resource-constrained devices such as wireless sensors and Internet of Things (IoT) devices have become ubiquitous in our digital ecosystem. These devices generate and handle a major part of our digital data. However, due to the impending threat of qu...
Post-Quantum Stealth Address Protocols
Marija Mikić, Mihajlo Srbakoski, Strahinja Praška·Jan 23, 2025
The Stealth Address Protocol (SAP) allows users to receive assets through stealth addresses that are unlinkable to their stealth meta-addresses. The most widely used SAP, Dual-Key SAP (DKSAP), and the most performant SAP, Elliptic Curve Pairing Dual-...
QuFeX: Quantum feature extraction module for hybrid quantum-classical deep neural networks
Naman Jain, Amir Kalev·Jan 22, 2025
We introduce Quantum Feature Extraction (QuFeX), a novel quantum machine learning module. The proposed module enables feature extraction in a reduced-dimensional space, significantly decreasing the number of parallel evaluations required in typical q...
Random Quantum Circuits with Time-Reversal Symmetry
Kabir Khanna, Abhishek Kumar, Romain Vasseur +1 more·Jan 22, 2025
Time-reversal (TR) symmetry is crucial for understanding a wide range of physical phenomena, and plays a key role in constraining fundamental particle interactions and in classifying phases of quantum matter. In this work, we introduce an ensemble of...
Group-Adapted Irreducible Matrix Units for the Walled Brauer Algebra
Michał Studziński, Tomasz Młynik, Marek Mozrzymas +2 more·Jan 22, 2025
This paper investigates the representation theory of the algebra of partially transposed permutation operators, $\mathcal{A}^d_{p,p}$, which provides a matrix representation for the abstract walled Brauer algebra. This algebra has recently gained sig...
Continuous-variable quantum communication
Vladyslav C. Usenko, Antonio Acín, Romain Alléaume +8 more·Jan 22, 2025
Tremendous progress in experimental quantum optics during the past decades enabled the advent of quantum technologies, one of which is quantum communication. Aimed at novel methods for more secure or efficient information transfer, quantum communicat...
An Advanced Hybrid Quantum Tabu Search Approach to Vehicle Routing Problems
James B. Holliday, Eneko Osaba, Khoa Luu·Jan 22, 2025
Quantum computing (QC) is expected to solve incredibly difficult problems, including finding optimal solutions to combinatorial optimization problems. However, to date, QC alone is still far to demonstrate this capability except on small-sized proble...
Simulating quantum circuits with arbitrary local noise using Pauli Propagation
Armando Angrisani, A. A. Mele, M. S. Rudolph +2 more·Jan 22, 2025
We present a polynomial-time classical algorithm for estimating expectation values of arbitrary observables on typical quantum circuits under any incoherent local noise, including non-unital or dephasing. Although previous research demonstrated that ...