Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Implementing fault-tolerant non-Clifford gates using the [[8,3,2]] color code
Daniel Honciuc Menendez, A. Ray, M. Vasmer·Sep 15, 2023
Quantum computers promise to solve problems that are intractable for classical computers, but qubits are vulnerable to many sources of error, limiting the depth of the circuits that can be reliably executed on today's quantum hardware. Quantum error ...
Overhead-constrained circuit knitting for variational quantum dynamics
G. Gentinetta, Friederike Metz, Giuseppe Carleo·Sep 14, 2023
Simulating the dynamics of large quantum systems is a formidable yet vital pursuit for obtaining a deeper understanding of quantum mechanical phenomena. While quantum computers hold great promise for speeding up such simulations, their practical appl...
Mitigating controller noise in quantum gates using optimal control theory
Aviv Aroch, R. Kosloff, S. Kallush·Sep 14, 2023
All quantum systems are subject to noise from the environment or external controls. This noise is a major obstacle to the realization of quantum technology. For example, noise limits the fidelity of quantum gates. Employing optimal control theory, we...
Parity Measurements using Dispersive Shifts for Surface Codes
Aneirin J. Baker·Sep 13, 2023
Parity measurements are central to quantum error correction (QEC). In current implementations measurements of stabilizers are performed using a number of Controlled Not (CNOT) gates. This implementation suffers from an exponential decrease in fidelit...
Analysis of Superconducting Qubit Layouts Using InductEx
Sean Crowe, Benjamin J. Taylor, Nicholas B. Ferrante +2 more·Sep 13, 2023
InductEx [1] is a software tool used for the analysis of integrated circuit designs and extraction of design parameters by way of numerical electromagnetic field solving. This tool was originally developed with Rapid Single Flux Quantum (RSFQ) chips ...
Fast Flux-Activated Leakage Reduction for Superconducting Quantum Circuits.
N. Lacroix, Luca Hofele, A. Remm +14 more·Sep 13, 2023
Quantum computers will require quantum error correction to reach the low error rates necessary for solving problems that surpass the capabilities of conventional computers. One of the dominant errors limiting the performance of quantum error correcti...
Deformed Fredkin model for the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>ν</mml:mi><mml:mo>=</mml:mo><mml:mn>5</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math> Moore-Read state on thin cylinders
Cristian Voinea, Songyang Pu, A. Kirmani +3 more·Sep 8, 2023
We propose a frustration-free model for the Moore-Read quantum Hall state on sufficiently thin cylinders with circumferences $\lesssim 7$ magnetic lengths. While the Moore-Read Hamiltonian involves complicated long-range interactions between triplets...
Extremum Seeking Control of Quantum Gates
E. Abbasgholinejad, Haoqin Deng, John Gamble IonQ +4 more·Sep 8, 2023
To be useful for quantum computation, gate operations must be maintained at high fidelities over long periods of time. In addition to decoherence, slow drifts in control hardware leads to inaccurate gates, causing the quality of operation of as-built...
Quantum Graph-State Synthesis with SAT
Sebastiaan Brand, T. Coopmans, A. Laarman·Sep 7, 2023
In quantum computing and quantum information processing, graph states are a specific type of quantum states which are commonly used in quantum networking and quantum error correction. A recurring problem is finding a transformation from a given sourc...
Single-Electron Occupation in Quantum Dot Arrays at Selectable Plunger Gate Voltage
M. Meyer, Corentin D'eprez, Ilja N Meijer +6 more·Sep 7, 2023
The small footprint of semiconductor qubits is favorable for scalable quantum computing. However, their size also makes them sensitive to their local environment and variations in the gate structure. Currently, each device requires tailored gate volt...
Quaternary Conjucyclic Codes with an Application to EAQEC Codes
Md Ajaharul Hossain, Ramakrishna Bandi·Sep 5, 2023
Conjucyclic codes are part of a family of codes that includes cyclic, constacyclic, and quasi-cyclic codes, among others. Despite their importance in quantum error correction, they have not received much attention in the literature. This paper focuse...
Tetris: A Compilation Framework for VQA Applications in Quantum Computing
Yuwei Jin, Zirui Li, Fei Hua +4 more·Sep 5, 2023
Quantum computing has shown promise in solving complex problems by leveraging the principles of superposition and entanglement. Variational quantum algorithms (VQA) are a class of algorithms suited for near-term quantum computers due to their modest ...
Quantum Control Landscapes for Generation of H and T Gates in an Open Qubit with Both Coherent and Environmental Drive
V. Petruhanov, A. Pechen·Sep 5, 2023
An important problem in quantum computation is the generation of single-qubit quantum gates such as Hadamard (H) and π/8 (T) gates, which are components of a universal set of gates. Qubits in experimental realizations of quantum computing devices are...
Efficient Classical Shadow Tomography through Many-body Localization Dynamics
Tian-Gang Zhou, P. Zhang·Sep 3, 2023
Classical shadow tomography serves as a potent tool for extracting numerous properties from quantum many-body systems with minimal measurements. Nevertheless, prevailing methods yielding optimal performance for few-body operators necessitate the appl...
Rapid single-shot parity spin readout in a silicon double quantum dot with fidelity exceeding 99%
K. Takeda, A. Noiri, Takashi Nakajima +5 more·Sep 1, 2023
Silicon-based spin qubits offer a potential pathway toward realizing a scalable quantum computer owing to their compatibility with semiconductor manufacturing technologies. Recent experiments in this system have demonstrated crucial technologies, inc...
Dynamic adaptive quantum approximate optimization algorithm for shallow, noise-resilient circuits
Nikola Yanakiev, N. Mertig, Christopher K. Long +1 more·Aug 31, 2023
The quantum approximate optimization algorithm (QAOA) is an appealing proposal to solve NP problems on noisy intermediate-scale quantum (NISQ) hardware. Making NISQ implementations of the QAOA resilient to noise requires short ansatz circuits with as...
Thermodynamic computing via autonomous quantum thermal machines
Patryk Lipka-Bartosik, M. Perarnau-Llobet, N. Brunner·Aug 30, 2023
We develop a physics-based model for classical computation based on autonomous quantum thermal machines. These machines consist of few interacting quantum bits (qubits) connected to several environments at different temperatures. Heat flows through t...
Probing Quantum Telecloning on Superconducting Quantum Processors
Elijah Pelofske, Andreas Bärtschi, S. Eidenbenz +2 more·Aug 29, 2023
Quantum information cannot be perfectly cloned, but approximate copies of quantum information can be generated. Quantum telecloning combines approximate quantum cloning, more typically referred to as quantum cloning, and quantum teleportation. Quantu...
Scalable Algorithms for Power Function Calculations of quantum states in NISQ Era
Wen-jian Zhao, Tingting Chen, Ru Yang·Aug 28, 2023
This article focuses on the development of scalable and quantum bit-efficient algorithms for computing power functions of random quantum states. Two algorithms, based on Hadamard testing and Gate Set Tomography, are proposed. We provide a comparative...
Universal quantum computation using atoms in cross-cavity systems
Luiz O. R. Solak, D. Z. Rossatto, C. Villas-Bôas·Aug 28, 2023
Quantum gates are the building blocks of quantum circuits, which in turn are the cornerstones of quantum information processing. In this work, we theoretically investigate a single-step implementation of both a universal two- (CNOT) and three-qubit (...