Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,336 papers in 12 months (-9% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Simulating Heavy-Hex Transverse Field Ising Model Magnetization Dynamics Using Programmable Quantum Annealers
Elijah Pelofske, Andreas Bartschi, S. Eidenbenz·Nov 3, 2023
Recently, a Hamiltonian dynamics simulation was performed on a kicked ferromagnetic 2D transverse field Ising model with a connectivity graph native to the 127 qubit heavy-hex IBM Quantum architecture using ZNE quantum error mitigation. We demonstrat...
Distributed Simulation of Statevectors and Density Matrices
Tyson Jones, Bálint Koczor, S. Benjamin·Nov 2, 2023
Classical simulation of quantum computers is an irreplaceable step in the design of quantum algorithms. Exponential simulation costs demand the use of high-performance computing techniques, and in particular distribution, whereby the quantum state de...
Quantum variational solving of nonlinear and multidimensional partial differential equations
Abhijat Sarma, Thomas W. Watts, Mudassir Moosa +2 more·Nov 2, 2023
A variational quantum algorithm for numerically solving partial differential equations (PDEs) on a quantum computer was proposed by Lubasch et al. In this paper, we generalize the method introduced by Lubasch et al. to cover a broader class of nonlin...
Pushing the Limits of Quantum Computing for Simulating PFAS Chemistry
Emil Dimitrov, Goar Sánchez‐Sanz, J. Nelson +10 more·Nov 2, 2023
Accurate and scalable methods for computational quantum chemistry can accelerate research and development in many fields, ranging from drug discovery to advanced material design. Solving the electronic Schrodinger equation is the core problem of comp...
Handbook for Quantifying Robustness of Magic
Hiroki Hamaguchi, Kou Hamada, Nobuyuki Yoshioka·Nov 2, 2023
The nonstabilizerness, or magic, is an essential quantum resource to perform universal quantum computation. Robustness of magic (RoM) in particular characterizes the degree of usefulness of a given quantum state for non-Clifford operation. While the ...
Security proof for variable-length quantum key distribution
Devashish Tupkary, E. Y. Tan, Norbert Lütkenhaus·Nov 2, 2023
We present a security proof for variable-length QKD in the Renner framework against IID collective attacks. Our proof can be lifted to coherent attacks using the postselection technique. Our first main result is a theorem to convert a series of secur...
Analog information decoding of bosonic quantum LDPC codes
Lucas Berent, Timo Hillmann, Jens Eisert +2 more·Nov 2, 2023
Quantum error correction is crucial for scalable quantum information-processing applications. Traditional discrete-variable quantum codes that use multiple two-level systems to encode logical information can be hardware intensive. An alternative appr...
ADAPT-QSCI: Adaptive Construction of an Input State for Quantum-Selected Configuration Interaction.
Yuya O. Nakagawa, Masahiko Kamoshita, Wataru Mizukami +2 more·Nov 2, 2023
We present a quantum-classical hybrid algorithm for calculating the ground state and its energy of the quantum many-body Hamiltonian by proposing an adaptive construction of a quantum state for the quantum-selected configuration interaction (QSCI) me...
Scalable Architecture for Trapped-Ion Quantum Computing Using rf Traps and Dynamic Optical Potentials
David Schwerdt, Lee Peleg, Yotam Shapira +9 more·Nov 2, 2023
Qubits based on ions trapped in linear radio-frequency traps form a successful platform for quantum computing, due to their high fidelity of operations, all-to-all connectivity, and degree of local control. In principle, there is no fundamental limit...
Addressing Stopping Failures for Small Set Flip Decoding of Hypergraph Product Codes
Lev Stambler, Anirudh Krishna, M. Beverland·Nov 1, 2023
For a quantum error correcting code to be used in practice, it needs to be equipped with an efficient decoding algorithm, which identifies corrections given the observed syndrome of errors.Hypergraph product codes are a promising family of constant-r...
The quantum cartpole: A benchmark environment for non-linear reinforcement learning
Kai Meinerz, S. Trebst, M. Rudner +1 more·Nov 1, 2023
Feedback-based control is the de-facto standard when it comes to controlling classical stochastic systems and processes. However, standard feedback-based control methods are challenged by quantum systems due to measurement induced backaction and part...
Echo-evolution data generation for quantum error mitigation via neural networks
Danila Babukhin·Nov 1, 2023
Neural networks provide a prospective tool for error mitigation in quantum simulation of physical systems. However, we need both noisy and noise-free data to train neural networks to mitigate errors in quantum computing results. Here, we propose a ph...
Linear-nonlinear duality for circuit design on quantum computing platforms
William E. Salazar, Omar Calderón-Losada, John H. Reina·Oct 31, 2023
Beam splitters (BSs) and optical parametric amplifiers (OPAs) can be described using Lie groups $SU(2)$ and $SU(1,1)$. Here, we show that the dynamical trajectories of these devices are connected via a Wick rotation on their respective group manifold...
Fault-Tolerant Operation of Bosonic Qubits with Discrete-Variable Ancillae
Qiang-Da Xu, Pei Zeng, Daohong Xu +1 more·Oct 31, 2023
Fault-tolerant quantum computation with bosonic qubits often necessitates the use of noisy discrete-variable ancillae. In this work, we establish a comprehensive and practical fault-tolerance framework for such a hybrid system and synthesize it with ...
Enhancing Graph Neural Networks with Quantum Computed Encodings
Slimane Thabet, Romain Fouilland, Mehdi Djellabi +4 more·Oct 31, 2023
Transformers are increasingly employed for graph data, demonstrating competitive performance in diverse tasks. To incorporate graph information into these models, it is essential to enhance node and edge features with positional encodings. In this wo...
The Discrete Noise Approximation in Quantum Circuits
Keith R. Fratus, J. Leppakangas, M. Marthaler +1 more·Oct 31, 2023
When modeling the effects of noise on quantum circuits, one often makes the assumption that these effects can be accounted for by individual decoherence events following an otherwise noise-free gate. In this work, we address the validity of this mode...
Extracting spectral properties of small Holstein polarons from a transmon-based analog quantum simulator
Vladimir M. Stojanović·Oct 31, 2023
The Holstein model, which describes purely local coupling of an itinerant excitation (electron, hole, exciton) with zero-dimensional (dispersionless) phonons, represents the paradigm for short-range excitation-phonon interactions. It is demonstrated ...
Observing Quantum Measurement Collapse as a Learnability Phase Transition
Utkarsh Agrawal, Javier Lopez-Piqueres, Romain Vasseur +2 more·Oct 31, 2023
During a quantum measurement, superpositions of states with different observable properties probabilistically collapse into one with a sharp value of the measured observable. In macroscopic quantum systems, this collapse arises via a continuous measu...
Fast elementary gates for universal quantum computation with Kerr parametric oscillator qubits
T. Kanao, Hayato Goto·Oct 31, 2023
Kerr parametric oscillators (KPOs) can stabilize the superpositions of coherent states, which can be utilized as qubits, and are promising candidates for realizing hardware-efficient quantum computers. Although elementary gates for universal quantum ...
Gibbs state sampling via cluster expansions
N. Eassa, Mahmoud M. A. Moustafa, Arnab Banerjee +1 more·Oct 31, 2023
Gibbs states (i.e., thermal states) can be used for several applications such as quantum simulation, quantum machine learning, quantum optimization, and the study of open quantum systems. Moreover, semi-definite programming, combinatorial optimizatio...