Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Control of Rydberg Atoms for Mesoscopic Quantum State and Circuit Preparation
Valerio Crescimanna, Jacob M. Taylor, A. Goldberg +1 more·Feb 15, 2023
Individually trapped Rydberg atoms show significant promise as a platform for scalable quantum simulation and for development of programmable quantum computers. In particular, the Rydberg blockade effect can be used to facilitate both fast qubit-qubi...
Discovery of atomic clock-like spin defects in simple oxides from first principles
J. Davidsson, M. Onizhuk, C. Vorwerk +1 more·Feb 15, 2023
Virtually noiseless due to the scarcity of spinful nuclei in the lattice, simple oxides hold promise as hosts of solid-state spin qubits. However, no suitable spin defect has yet been found in these systems. Using high-throughput first-principles cal...
All-Microwave Manipulation of Superconducting Qubits with a Fixed-Frequency Transmon Coupler.
S. Shirai, Yuta Okubo, K. Matsuura +3 more·Feb 14, 2023
All-microwave control of fixed-frequency superconducting quantum computing circuits is advantageous for minimizing the noise channels and wiring costs. Here we introduce a swap interaction between two data transmons assisted by the third-order nonlin...
Performance Analysis of a Repetition Cat Code Architecture: Computing 256-bit Elliptic Curve Logarithm in 9 Hours with 126 133 Cat Qubits.
É. Gouzien, Diego Ruiz, François-Marie Le Régent +2 more·Feb 13, 2023
Cat qubits provide appealing building blocks for quantum computing. They exhibit a tunable noise bias yielding an exponential suppression of bit flips with the average photon number and a protection against the remaining phase errors can be ensured b...
A qubit-efficient variational selected configuration-interaction method
Daniel Yoffe, Noga Entin, A. Natan +1 more·Feb 13, 2023
Finding the ground-state energy of molecules is an important and challenging computational problem for which quantum computing can potentially find efficient solutions. The variational quantum eigensolver (VQE) is a quantum algorithm that tackles the...
Long-Lived Particles Anomaly Detection with Parametrized Quantum Circuits
Simone Bordoni, Denis Stanev, T. Santantonio +1 more·Feb 13, 2023
We investigate the possibility to apply quantum machine learning techniques for data analysis, with particular regard to an interesting use-case in high-energy physics. We propose an anomaly detection algorithm based on a parametrized quantum circuit...
Non-Markovian noise sources for quantum error mitigation
D. Ahn, Byeongyong Park Department of Electrical, Computer Engineering +4 more·Feb 10, 2023
Reducing the impact of errors and decoherence in near-term quantum computers, such as noisy intermediate-scale quantum (NISQ) devices, is critical for their practical implementation. These factors significantly limit the applicability of quantum algo...
Quantum Multiagent Actor–Critic Networks for Cooperative Mobile Access in Multi-UAV Systems
C. Park, Won Joon Yun, Jae Pyoung Kim +4 more·Feb 9, 2023
This article proposes a novel algorithm, named quantum multiagent actor–critic networks (QMACN) for autonomously constructing a robust mobile access system employing multiple unmanned aerial vehicles (UAVs). In the context of facilitating collaborati...
Thermodynamic AI and the Fluctuation Frontier
Patrick J. Coles·Feb 9, 2023
Many Artificial Intelligence (AI) algorithms are inspired by physics and employ stochastic fluctuations. We connect these physics-inspired AI algorithms by unifying them under a single mathematical framework that we call Thermodynamic AI, including: ...
An expressive ansatz for low-depth quantum approximate optimisation
V. Vijendran, Aritra Das, Dax Enshan Koh +2 more·Feb 9, 2023
The quantum approximate optimisation algorithm (QAOA) is a hybrid quantum–classical algorithm used to approximately solve combinatorial optimisation problems. It involves multiple iterations of a parameterised ansatz that consists of a problem and mi...
A lower bound on the overhead of quantum error correction in low dimensions
Nouédyn Baspin, Omar Fawzi, Ala Shayeghi·Feb 8, 2023
We show that a quantum architecture with an error correction procedure limited to geometrically local operations incurs an overhead that grows with the system size, even if arbitrary error-free classical computation is allowed. In particular, we prov...
Error-tolerant oblivious transfer in the noisy-storage model
C. Lupo, James T. Peat, E. Andersson +1 more·Feb 8, 2023
The noisy-storage model of quantum cryptography allows for information-theoretically secure two-party computation based on the assumption that a cheating user has at most access to an imperfect, noisy quantum memory, whereas the honest users do not n...
Autonomous coherence protection of a two-level system in a fluctuating environment
Fernando Quijandr'ia, J. Twamley·Feb 8, 2023
We re-examine a scheme generalized by [R. Finkelstein et al, Phys. Rev. X 11, 011008 (2021)], whose original purpose was to remove the effects of static Doppler broadening from an ensemble of non-interacting two-level systems (qubits). This scheme in...
Qualitative quantum simulation of resonant tunneling and localization with the shallow quantum circuits
P. Wang·Feb 7, 2023
In a circuit-based quantum computer, the computing is performed via the discrete-time evolution driven by quantum gates. Accurate simulation of continuoustime evolution requires a large number of quantum gates and therefore suffers from more noise. I...
High-Threshold Codes for Neutral-Atom Qubits with Biased Erasure Errors
K. Sahay, J. Jin, J. Claes +2 more·Feb 6, 2023
The requirements for fault-tolerant quantum error correction can be simplified by leveraging structure in the noise of the underlying hardware. In this work, we identify a new type of structured noise motivated by neutral atom qubits, biased erasure ...
Virtual quantum error detection
Kento Tsubouchi, Yasunari Suzuki, Y. Tokunaga +2 more·Feb 6, 2023
Quantum error correction and quantum error detection necessitate syndrome measurements to detect errors. Performing syndrome measurements for each stabilizer generator can be a significant overhead, considering the fact that the readout fidelity in t...
Model-Free Quantum Gate Design and Calibration Using Deep Reinforcement Learning
Omar Shindi, Qi Yu, Parth Girdhar +1 more·Feb 5, 2023
High-fidelity quantum gate design is important for various quantum technologies, such as quantum computation and quantum communication. Numerous control policies for quantum gate design have been proposed given a dynamical model of the quantum system...
Investigating the effect of circuit cutting in QAOA for the MaxCut problem on NISQ devices
Marvin Bechtold, Johanna Barzen, F. Leymann +4 more·Feb 3, 2023
Noisy intermediate-scale quantum (NISQ) devices are restricted by their limited number of qubits and their short decoherence times. An approach addressing these problems is quantum circuit cutting. It decomposes the execution of a large quantum circu...
Dynamical Quantum Phase Transitions of the Schwinger Model: Real-Time Dynamics on IBM Quantum
Domenico Pomarico, L. Cosmai, P. Facchi +3 more·Feb 2, 2023
Simulating the real-time dynamics of gauge theories represents a paradigmatic use case to test the hardware capabilities of a quantum computer, since it can involve non-trivial input states’ preparation, discretized time evolution, long-distance enta...
Fault-tolerant connection of error-corrected qubits with noisy links
Joshua Ramette, Josiah Sinclair, N. P. Breuckmann +1 more·Feb 2, 2023
One of the most promising routes toward scalable quantum computing is a modular approach. We show that distinct surface code patches can be connected in a fault-tolerant manner even in the presence of substantial noise along their connecting interfac...