Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,012 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Circuit Optimization by Graph Coloring
Hochang Lee, Kyung Chul Jeong, Panjin Kim·Jan 24, 2025
This work shows that minimizing the depth of a quantum circuit composed of commuting operations reduces to a vertex coloring problem on an appropriately constructed graph, where gates correspond to vertices and edges encode non-parallelizability. The...
Error-mitigated geometric quantum control over an oscillator
M. Liang, Tao Chen, Zheng-Yuan Xue·Jan 24, 2025
Quantum information is very fragile to environmentally and operationally induced imperfections. Therefore, the construction of practical quantum computers requires quantum error-correction techniques to protect quantum information. In particular, enc...
Qubit operations using a modular optical system engineered with PyOpticL: a code-to-CAD optical layout tool
Jacob Myers, Christopher Caron, N. Helaly +5 more·Jan 24, 2025
Complex optical design is hindered by conventional piecewise setup, which prevents modularization and therefore abstraction of subsystems at the circuit level. This limits multiple fields that require complex optics systems, including quantum computi...
Analysis of Heralded Higher-Fidelity Two-Qubit Entangling Gates with Self-Correction
Yuan Sun·Jan 24, 2025
For the quantum error correction and noisy intermediate-scale quantum algorithms to function with high efficiency, the raw fidelity of quantum logic gates on physical qubits needs to satisfy strict requirements. The neutral atom quantum computing equ...
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...
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 ...
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...
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...
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...
Improving Figures of Merit for Quantum Circuit Compilation
Patrick Hopf, Nils Quetschlich, L. Schulz +1 more·Jan 22, 2025
Quantum computing is an emerging technology that has seen significant software and hardware improvements in recent years. Executing a quantum program requires the compilation of its quantum circuit for a target Quantum Processing Unit (QPU). Various ...
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 ...
Binary integer programming for optimizing ebit cost in distributed quantum circuits with fixed module allocation
Hyunho Cha, Jungwoo Lee·Jan 21, 2025
Modular and networked quantum architectures can scale beyond the qubit count of a single device, but executing a circuit across modules requires implementing non-local two-qubit gates using shared entanglement (ebits) and classical communication, mak...
Solving Constrained Optimization Problems Using Hybrid Qubit-Qumode Quantum Devices
Rishab Dutta, Brandon Allen, Chuzhi Xu +8 more·Jan 20, 2025
Variational Quantum Algorithms (VQAs) provide a promising framework for tackling complex optimization problems on near-term quantum hardware. Here, we demonstrate that hybrid qubit--qumode quantum devices offer an efficient route to solving Quadratic...
Improving thermal state preparation of Sachdev–Ye–Kitaev model with reinforcement learning on quantum hardware
Akash Kundu·Jan 20, 2025
The Sachdev–Ye–Kitaev (SYK) model, known for its strong quantum correlations and chaotic behavior, serves as a key platform for quantum gravity studies. However, variationally preparing thermal states on near-term quantum processors for large systems...
Highly-entangled, highly-doped states that are efficiently cross-device verifiable
Janek Denzler, S. Varona, T. Guaita +1 more·Jan 20, 2025
In this paper, we introduce a class of highly entangled real quantum states that cannot be approximated by circuits with $\log$-many non-Clifford gates and prove that Bell sampling enables efficient cross-device verification (or distributed inner pro...
Quantum Error Mitigation in Optimized Circuits for Particle-Density Correlations in Real-Time Dynamics of the Schwinger Model
Domenico Pomarico, M. Pandey, Riccardo Cioli +5 more·Jan 18, 2025
Quantum computing gives direct access to the study of the real-time dynamics of quantum many-body systems. In principle, it is possible to directly calculate non-equal-time correlation functions, from which one can detect interesting phenomena, such ...
Performance Analysis for Crosstalk Errors between Parallel Entangling Gates in Trapped Ion Quantum Error Correction
Fang Liu, Gaoxiang Tang, Luming Duan +1 more·Jan 16, 2025
The ability to execute a large number of quantum gates in parallel is a fundamental requirement for quantum error correction, allowing an error threshold to exist under the finite coherence time of physical qubits. Recently, two-dimensional ion cryst...
Unitary Expressions: A Necessary Abstraction for Extensible Quantum Programming Languages and Systems
Ed Younis·Jan 16, 2025
Quantum gates are the fundamental instructions of digital quantum computers. Current programming languages, systems, and software development toolkits identify these operational gates by their titles, which requires a shared understanding of their me...
Balanced cross-Kerr coupling for superconducting qubit readout
Alex A. Chapple, Othmane Benhayoune-Khadraoui, Simon Richer +1 more·Jan 15, 2025
Dispersive readout, the standard method for measuring superconducting qubits, is limited by multiphoton qubit-resonator processes arising even at moderate drive powers. These processes degrade performance, causing dispersive readout to lag behind sin...
Quantum computation via Floquet tailored Rydberg interactions
Jun-Yi Wu, Jin-Lei Wu, F. Guo +5 more·Jan 15, 2025
Rydberg atoms have stood out as a highly promising platform for realizing quantum computation. Floquet frequency modulation (FFM), in Rydberg atom systems, provides a unique tool for achieving precise quantum control and uncovering exotic physical ph...