Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,638 papers in 12 months (-16% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Low-Overhead Tailoring and Learning of Noise in Graph States
Guedong Park, Jinzhao Sun, Hyunseok Jeong·Mar 17, 2025
Graph and hypergraph states are important resource states for realizing universal quantum computation and diverse non-local physical phenomena. However, noise learning in such states is challenging due to their large entanglement and magic. This work...
Lower bounding the MaxCut of high girth 3-regular graphs using the QAOA
Edward Farhi, Sam Gutmann, Daniel Ranard +1 more·Mar 17, 2025
We study MaxCut on 3-regular graphs of minimum girth $g$ for various $g$'s. We obtain new lower bounds on the maximum cut achievable in such graphs by analyzing the Quantum Approximate Optimization Algorithm (QAOA). For $g \geq 16$, at depth $p \geq ...
Non-asymptotic quantum communication on lossy transmission lines with memory
Francesco Anna Mele, G. Barbarino, Vittorio Giovannetti +1 more·Mar 17, 2025
Non-asymptotic quantum Shannon theory analyses how to transmit quantum information across a quantum channel as efficiently as possible within a specified error tolerance, given access to a finite, fixed, number of channel uses. In a recent work, we d...
Cycle-Aware ZZ Crosstalk Mitigation on Quantum Hardware
Jiayi Zhong, Yuxin Deng·Mar 17, 2025
ZZ crosstalk and decoherence hinder superconducting quantum computing. To enhance parallelism in mitigating ZZ crosstalk, we formulate the problem by integrating quantum cycles and two forms of qubit interference. We then propose CYCO, a CYcle-aware ...
Symmetric Channel Verification for Purifying Noisy Quantum Channels
Kento Tsubouchi, Yosuke Mitsuhashi, Ryuji Takagi +1 more·Mar 17, 2025
Symmetry inherent in quantum states has been widely used to reduce the effect of noise in quantum error correction and a quantum error-mitigation technique known as symmetry verification. However, these symmetry-based techniques exploit symmetry in q...
Quantum error detection in qubit-resonator star architecture
Florian Vigneau, Sourav Majumder, A. Rath +13 more·Mar 17, 2025
Achieving industrial quantum advantage is unlikely without the use of quantum error correction (QEC). Other QEC codes beyond surface code are being experimentally studied, such as color codes and quantum Low-Density Parity Check (qLDPC) codes, that c...
Resolving space-time structures of quantum impurities with a numerically exact few-body algorithm
Yuriel N'unez-Fern'andez, Maxime Debertolis, Serge Florens·Mar 17, 2025
We introduce a numerically exact real-time evolution scheme for quantum impurities in a macroscopically large bath. The algorithm is few-body revealing, namely it identifies the electronic orbitals that can be made inactive (in a trivial product stat...
Enhancing Circuit Trainability with Selective Gate Activation Strategy
Jeihee Cho, Junyong Lee, Daniel Justice +1 more·Mar 17, 2025
Hybrid quantum-classical computing relies heavily on Variational Quantum Algorithms (VQAs) to tackle challenges in diverse fields like quantum chemistry and machine learning. However, VQAs face a critical limitation: the balance between circuit train...
Optimizing Ansatz Design in Quantum Generative Adversarial Networks Using Large Language Models
Kento Ueda, Atsushi Matsuo·Mar 17, 2025
We present a novel approach for improving the design of ansatzes in Quantum Generative Adversarial Networks (qGANs) by leveraging Large Language Models (LLMs). By combining the strengths of LLMs with qGANs, our approach iteratively refines ansatz str...
Scalable Robust Quantum Control for Semiconductor Spin Qubits with Always-on Couplings
Yong-Ju Hai, Shihang Zhang, Hao-Yu Guan +3 more·Mar 17, 2025
We demonstrate a robust quantum control framework that enables high-fidelity gate operations in semiconductor spin qubit systems with always-on couplings. Always-on interactions between qubits pose a fundamental challenge for quantum processors by in...
Realization of fermionic Laughlin state on a quantum processor
L. Shen, Mao Lin, Cedric Yen-Yu Lin +2 more·Mar 17, 2025
Strongly correlated topological phases of matter are central to modern condensed matter physics and quantum information technology but often challenging to probe and control in material systems. The experimental difficulty of accessing these phases h...
Optimizing the frequency positioning of tunable couplers in a circuit QED processor to mitigate spectator effects on quantum operations
S. Vall'es-Sanclemente, T. H. F. Vroomans, T. R. V. Abswoude +8 more·Mar 17, 2025
We experimentally optimize the frequency of flux-tunable couplers in a superconducting quantum processor to minimize the impact of spectator transmons during quantum operations (single-qubit gates, two-qubit gates and readout) on other transmons. We ...
Accelerating Large-Scale Linear Algebra Using Variational Quantum Imaginary Time Evolution
Willie Aboumrad, Daiwei Zhu, Claudio Girotto +6 more·Mar 17, 2025
The solution of large sparse linear systems via factorization methods such as LU or Cholesky decomposition, can be computationally expensive due to the introduction of non-zero elements, or “fill-in.” Graph partitioning can be used to reduce the “fil...
Stable homotopy theory of invertible gapped quantum spin systems I: Kitaev's $Ω$-spectrum
Yosuke Kubota·Mar 16, 2025
We provide a mathematical realization of a conjecture by Kitaev, on the basis of the operator-algebraic formulation of infinite quantum spin systems. Our main results are threefold. First, we construct an $Ω$-spectrum $\mathit{IP}_*$ whose homotopy g...
Virtual purification complements quantum error correction in quantum metrology
Hyukgun Kwon, Changhun Oh, Youngrong Lim +3 more·Mar 16, 2025
Quantum resources enable one to achieve quantum-enhanced estimation sensitivity beyond its classical counterpart. Many studies mainly focus on reducing statistical error, under the assumption that one can always set an unbiased estimator. However, se...
Robust Lindbladian Tomography for Cyclic Quantum Gates
T. Sugiyama·Mar 16, 2025
Precise characterization of noisy quantum operations plays an important role for realizing further accurate operations. Quantum tomography is a popular class of characterization methods, and several advanced methods in the class use error amplificati...
Learning response functions of analog quantum computers: analysis of neutral-atom and superconducting platforms
Cenk Tuysuz, Abhijith Jayakumar, Carleton Coffrin +2 more·Mar 16, 2025
Analog quantum computation is an attractive paradigm for the simulation of time-dependent quantum systems. Programmable analog quantum computers have been realized in hardware using a variety of physical principles, including neutral-atom and superco...
Performance characterization of a multi-module quantum processor with static inter-chip couplers
G. Norris, Kieran Dalton, Dante Colao Zanuz +8 more·Mar 16, 2025
Three-dimensional integration technologies such as flip-chip bonding are a key prerequisite to realize large-scale superconducting quantum processors. Modular architectures, in which circuit elements are spread over multiple chips, can further im...
Strongly anharmonic flux-tunable transmon based on InAs-Al 2D heterostructure
Shukai Liu, Arunav Bordoloi, Jacob Issokson +4 more·Mar 15, 2025
The gatemon qubits, made of transparent superconducting-semiconducting Josephson junctions, typically have even weaker anharmonicity than the opaque AlOx-junction transmons. However, flux-frustrated gatemons can acquire a much stronger anharmonicity,...
Quantum Simulations of Chemical Reactions: Achieving Accuracy with NISQ Devices
Maitreyee Sarkar, Lisa Roy, Akash Gutal +2 more·Mar 15, 2025
Quantum computing is viewed as a promising technology because of its potential for polynomial growth in complexity, in contrast to the exponential growth observed in its classical counterparts. In the current Noisy Intermediate-Scale Quantum (NISQ) e...