Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,010 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Error mitigation and circuit division for early fault-tolerant quantum phase estimation
Alicja Dutkiewicz, S. Polla, Maximilian Scheurer +3 more·Oct 7, 2024
As fully fault-tolerant quantum computers capable of solving useful problems remain a distant goal, we anticipate an era of"early fault tolerance"where limited error correction is available. We propose a framework for designing early fault-tolerant a...
Succinct Fermion Data Structures
Joseph Carolan, Luke Schaeffer·Oct 5, 2024
Simulating fermionic systems on a quantum computer requires representing fermionic states using qubits. The complexity of many simulation algorithms depends on the complexity of implementing rotations generated by fermionic creation-annihilation oper...
Universal adapters between quantum LDPC codes
Esha Swaroop, Tomas Jochym-O'Connor, Theodore J. Yoder·Oct 4, 2024
We propose the repetition code adapter as a way to perform joint logical Pauli measurements within a quantum low-density parity check (LDPC) codeblock or between separate such codeblocks, thus providing a flexible tool for fault-tolerant computation ...
Quantum circuit complexity for linearly polarised light
E. Curado, S. Faci, J. Gazeau +3 more·Oct 4, 2024
In this study, we explore a form of quantum circuit complexity that extends to open systems. To illustrate our methodology, we focus on a basic model where the projective Hilbert space of states is depicted by the set of orientations in the Euclidean...
Efficient self-consistent learning of gate set Pauli noise
Senrui Chen, Zhihan Zhang, Liang Jiang +1 more·Oct 4, 2024
Understanding quantum noise is an essential step towards building practical quantum information processing systems. Pauli noise is a useful model that has been widely applied in quantum benchmarking, error mitigation, and error correction. Despite in...
Simplified projection on total spin zero for state preparation on quantum computers
E. Rule, I. Stetcu, Joseph Carlson·Oct 3, 2024
We introduce a simple algorithm for projecting on $J=0$ states of a many-body system by performing a series of rotations to remove states with angular momentum projections greater than zero. Existing methods rely on unitary evolution with the two-bod...
Optimised Hybrid Classical-Quantum Algorithm for Accelerated Solution of Sparse Linear Systems
H. Singh·Oct 3, 2024
Efficiently solving large-scale sparse linear systems poses a significant challenge in computational science, especially in fields such as physics, engineering, machine learning, and finance. Traditional classical algorithms face scalability issues a...
Robust Quantum Gate Preparation in Open Environments
Luke S. Baker, Syed A. Shah, Anatoly Zlotnik +1 more·Oct 2, 2024
We develop an optimal control algorithm for robust quantum gate preparation in open environments with the state of the quantum system represented using the Lindblad master equation. The algorithm is based on adaptive linearization and iterative quadr...
Universal logical quantum photonic neural network processor via cavity-assisted interactions
J. Basani, M. Niu, E. Waks·Oct 2, 2024
Encoding quantum information within bosonic modes offers a promising direction for hardware-efficient and fault-tolerant quantum information processing. However, achieving high-fidelity universal control over bosonic encodings using native photonic h...
Quantum photonic gates with two-dimensional random walkers.
S. A. Hassani Gangaraj, Dan T. Nguyen·Oct 2, 2024
Quantum gates are crucial for processing quantum information, but implementing them in a photonic platform poses unique challenges due to the peculiar way photons propagate and interfere. Here, we propose quantum photonic gates that utilize continuou...
Optimization of a Quantum Subset Sum Oracle
A. Benoit, Sam Schwartz, Ron K. Cytron·Oct 2, 2024
We investigate the implementation of an oracle for the Subset Sum problem for quantum search using Grover's algorithm. Our work concerns reducing the number of qubits, gates, and multi-controlled gates required by the oracle. We describe the compilat...
Systematic construction of multi-controlled Pauli gate decompositions with optimal $T$-count
Ken M. Nakanishi, S. Todo·Oct 1, 2024
Multi-controlled Pauli gates are typical high-level qubit operations that appear in the quantum circuits of various quantum algorithms. We find multi-controlled Pauli gate decompositions with smaller CNOT-count or $T$-depth while keeping the currentl...
Smallest quantum codes for amplitude damping noise
Sourav Dutta, Aditya Jain, Prabha Mandayam·Sep 30, 2024
We describe the smallest quantum error correcting (QEC) code to correct for amplitude-damping (AD) noise, namely, a 3-qubit code that corrects all the single-qubit damping errors. We generalize this construction to a family of codes that correct AD n...
Qibocal: an open-source framework for calibration of self-hosted quantum devices
Andrea Pasquale, Edoardo Pedicillo, Juan Cereijo +16 more·Sep 30, 2024
Calibration of quantum devices is fundamental to successfully deploy quantum algorithms on current available quantum hardware. We present Qibocal, an open-source software library to perform calibration and characterization of superconducting quantum ...
Experimental Online Quantum Dots Charge Autotuning Using Neural Networks
Victor Yon, Bastien Galaup, C. Rohrbacher +11 more·Sep 30, 2024
Spin-based semiconductor qubits hold promise for scalable quantum computing, yet they require reliable autonomous calibration procedures. This study presents an experimental demonstration of online single-dot charge autotuning using a convolutional n...
Floquet evolution of the q-deformed \texorpdfstring{SU(3)${}_1$}{SU(3)1} Yang-Mills theory on a two-leg ladder
Tomoya Hayata, Yoshimasa Hidaka·Sep 30, 2024
We simulate Floquet time-evolution of a truncated SU(3) lattice Yang-Mills theory on a two-leg ladder geometry under open boundary conditions using IBM's superconducting 156-qubit device ibm\_fez. To this end, we derive the quantum spin representatio...
Polarization and Orbital Angular Momentum Encoded Quantum Toffoli Gate Enabled by Diffractive Neural Networks.
Qianke Wang, Dawei Lyu, Jun Liu +1 more·Sep 30, 2024
Controlled quantum gates play a crucial role in enabling quantum universal operations by facilitating interactions between qubits. Direct implementation of three-qubit gates simplifies the design of quantum circuits, thereby being conducive to perfor...
Information processing at the speed of light
M. AbuGhanem·Sep 29, 2024
In recent years, quantum computing has made significant strides, particularly in light-based technology. The introduction of quantum photonic chips has ushered in an era marked by scalability, stability, and cost-effectiveness, paving the way for inn...
Fault-Tolerant Belief Propagation for Practical Quantum Memory
Kao-Yueh Kuo, Ching-Yi Lai·Sep 27, 2024
A fault-tolerant approach to reliable quantum memory is essential for scalable quantum computing, as physical qubits are susceptible to noise. Quantum error correction (QEC) must be continuously performed to prolong the memory lifetime. In QEC, error...
Transpiling Quantum Assembly Language Circuits to a Qudit Form
D. Drozhzhin, Anastasiia S. Nikolaeva, E. Kiktenko +1 more·Sep 27, 2024
In this paper, we introduce the workflow for converting qubit circuits represented by Open Quantum Assembly format (OpenQASM, also known as QASM) into the qudit form for execution on qudit hardware and provide a method for translating qudit experimen...