Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Subspace preserving quantum convolutional neural network architectures
Léo Monbroussou, Jonas Landman, Letao Wang +2 more·Sep 27, 2024
Subspace preserving quantum circuits are a class of quantum algorithms that, relying on some symmetries in the computation, can offer theoretical guarantees for their training. Those algorithms have gained extensive interest as they can offer polynom...
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...
Fault-tolerant logical Clifford gates from code automorphisms
Hasan Sayginel, Stergios Koutsioumpas, Mark A. Webster +2 more·Sep 26, 2024
We study the implementation of fault-tolerant logical Clifford gates on stabilizer quantum error correcting codes based on their symmetries. Our approach is to map the stabilizer code to a binary linear code, compute its automorphism group, and impos...
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 ...
Non-stabilizerness Entanglement Entropy: a measure of hardness in the classical simulation of quantum many-body systems
Jiale Huang, Xiangjian Qian, Mingpu Qin·Sep 25, 2024
Classical and quantum states can be distinguished by entanglement entropy, which can be viewed as a measure of quantum resources. Entanglement entropy also plays a pivotal role in understanding computational complexity in simulating quantum systems. ...
Visualizing dynamics of charges and strings in (2 + 1)D lattice gauge theories
T. Cochran, B. Jobst, Eliot Rosenberg +189 more·Sep 25, 2024
Lattice gauge theories (LGTs)1, 2, 3–4 can be used to understand a wide range of phenomena, from elementary particle scattering in high-energy physics to effective descriptions of many-body interactions in materials5, 6–7. Studying dynamical properti...
Dynamically Optimized Super‐Robust Nonadiabatic Holonomic Quantum Gates Based on Superconducting Circuits
Hai Xu, Wan-Xia Li, Tao Chen +2 more·Sep 24, 2024
Nonadiabatic holonomic quantum computation (NHQC) leverages non‐Abelian geometric phases within a nonadiabatic framework to achieve fast and robust quantum gate operations. However, the practical implementation of NHQC is challenged by the imperfec...
Scalable quantum dynamics compilation via quantum machine learning
Yuxuan Zhang, R. Wiersema, J. Carrasquilla +2 more·Sep 24, 2024
Quantum dynamics compilation is an important task for improving quantum simulation efficiency: It aims to synthesize multi-qubit target dynamics into a circuit consisting of as few elementary gates as possible. Compared to deterministic methods such ...
Deep Circuit Compression for Quantum Dynamics via Tensor Networks
J. Gibbs, Lukasz Cincio·Sep 24, 2024
Dynamic quantum simulation is a leading application for achieving quantum advantage. However, high circuit depths remain a limiting factor on near-term quantum hardware. We present a compilation algorithm based on Matrix Product Operators for generat...
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...
Phonon Dephasing, Entanglement and Exchange-Only Toffoli Gate Sequence in Quantum Dot Spin Chains
Guanjie He·Sep 23, 2024
The quantum dot spin chain system is vital for quantum simulation and studying collective electron behaviors, necessitating an understanding of its mechanisms and control protocols. Chapter 1 introduces key concepts, focusing on the extended Hubbard ...
Gate Optimization of NEQR Quantum Circuits via PPRM Transformation
Shahab Iranmanesh, Hossein Aghababa, K. Fouladi·Sep 22, 2024
Quantum image representation (QIR) is a key challenge in quantum image processing (QIP) due to the large number of pixels in images, which increases the need for quantum gates and qubits. However, current quantum systems face limitations in run-time ...
Quantum Computing for Automotive Applications: From Algorithms to Applications
B. G. Q. T. -. C. A. Riofr'io, Johannes Klepsch, Jernej Rudi Finžgar +6 more·Sep 21, 2024
Quantum computing could impact various industries, with the automotive industry with many computational challenges, from optimizing supply chains and manufacturing to vehicle engineering, being particularly promising. This chapter investigates state-...
Efficient fault-tolerant code switching via one-way transversal CNOT gates
Sascha Heußen, J. Hilder·Sep 20, 2024
Code switching is an established technique that facilitates a universal set of FT quantum gate operations by combining two QEC codes with complementary sets of gates, which each by themselves are easy to implement fault-tolerantly. In this work, we p...
Optimizing a parameterized controlled gate using free quaternion selection
Hiroyoshi Kurogi, Katsuhiro Endo, Yuki Sato +6 more·Sep 20, 2024
In variational quantum algorithms (VQAs), parameterization is typically applied to single-qubit gates. In this study, we instead parameterize a generalized controlled gate and propose an algorithm to locally minimize the cost function by maximally op...
Enhancement of quantum annealing via n-local catalysts
Roopayan Ghosh, Luca A. Nutricati, Natasha Feinstein +2 more·Sep 19, 2024
The potential quantum speedup in solving optimization problems via adiabatic quantum annealing is often hindered by the closing of the energy gap during the anneal, especially when this gap scales exponentially with system size. In this work, we alle...
A Computation‐Enhanced High‐Dimensional Quantum Gate for Silicon‐Vacancy Spins
Gang Fan, Heng‐Zhi Niu, Qiu‐lin Tan +1 more·Sep 18, 2024
Qudit‐based quantum gates in high‐dimensional (HD) Hilbert space offer a viable route toward effectively accelerating the speed of quantum computing and performing complex quantum logic operations. In this study, an innovative 2‐qudit HD controlled‐S...
Rapid Initial-State Preparation for the Quantum Simulation of Strongly Correlated Molecules
Dominic W. Berry, Yu Tong, T. Khattar +10 more·Sep 18, 2024
Studies on quantum algorithms for ground-state energy estimation often assume perfect ground-state preparation; however, in reality the initial state will have imperfect overlap with the true ground state. Here, we address that problem in two ways: b...
Large-scale quantum annealing simulation with tensor networks and belief propagation
I. Luchnikov, Egor Tiunov, Tobias Haug +1 more·Sep 18, 2024
Quantum annealing and quantum approximate optimization algorithms hold a great potential to speed-up optimization problems. This could be game-changing for a plethora of applications. Yet, in order to hope to beat classical solvers, quantum circuits ...
Non-Universality from Conserved Superoperators in Unitary Circuits
Marco Lastres, Frank Pollmann, Sanjay Moudgalya·Sep 17, 2024
An important result in the theory of quantum control is the "universality" of $2$-local unitary gates, i.e. the fact that any global unitary evolution of a system of $L$ qudits can be implemented by composition of $2$-local unitary gates. Surprisingl...