Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Electrical Tuning of Neutral and Charged Excitons with 1-nm Gate
Jawaher Almutlaq, Jiangtao Wang, Linsen Li +5 more·Oct 30, 2023
Electrical control of individual spins and photons in solids is key for quantum technologies, but scaling down to small, static systems remains challenging. Here, we demonstrate nanoscale electrical tuning of neutral and charged excitons in monolayer...
Symmetry breaking and restoration for many-body problems treated on quantum computers
A. Ruiz·Oct 27, 2023
This thesis explores the application of the Symmetry-Breaking/Symmetry-Restoration methodology on quantum computers to better approximate a Hamiltonian's ground state energy within a variational framework in many-body physics. This involves intention...
Broadband coplanar-waveguide-based impedance-transformed Josephson parametric amplifier
Bingcheng Qing, Long B. Nguyen, Xinyu Liu +9 more·Oct 26, 2023
Quantum-limited Josephson parametric amplifiers play a pivotal role in advancing the field of circuit quantum electrodynamics by enabling the fast and high-fidelity measurement of weak microwave signals. Therefore, it is necessary to develop robust p...
Quantum multiphoton Rabi oscillations in waveguide QED
D. Mukhopadhyay, Jung-Tsung Shen·Oct 24, 2023
The future of quantum information processing hinges on chip-scale nanophotonics, specifically cavity QED and waveguide QED. One of the foremost processes underpinning quantum photonic technologies is the phenomenon of Rabi oscillations, which manifes...
Gottesman-Kitaev-Preskill Encoding in Continuous Modal Variables of Single Photons.
Éloi Descamps, Arne Keller, P. Milman·Oct 19, 2023
GKP states, introduced by Gottesman, Kitaev, and Preskill, are continuous variable logical qubits that can be corrected for errors caused by phase space displacements. Their experimental realization is challenging, in particular, using propagating fi...
Generalized Quantum Data-Syndrome Codes and Belief Propagation Decoding for Phenomenological Noise
Kao-Yueh Kuo, Ching-Yi Lai·Oct 19, 2023
Quantum stabilizer codes often struggle with syndrome errors due to measurement imperfections. Typically, multiple rounds of syndrome extraction are employed to ensure reliable error information. In this paper, we consider phenomenological decoding p...
Simulating two-dimensional lattice gauge theories on a qudit quantum computer
M. Meth, Jinglei Zhang, J. Haase +11 more·Oct 18, 2023
Particle physics describes the interplay of matter and forces through gauge theories. Yet, the intrinsic quantum nature of gauge theories makes important problems notoriously difficult for classical computational techniques. Quantum computers offer a...
Hybrid Quantum-Classical Graph Neural Networks for Tumor Classification in Digital Pathology
Anupama Ray, Dhiraj Madan, Srushti Patil +2 more·Oct 17, 2023
Advances in classical machine learning and single-cell technologies have paved the way for understanding interactions between disease cells and tumor microenvironments towards accelerating therapeutic discovery. However, challenges in these machine l...
Optimizing edge-state transfer in a Su-Schrieffer-Heeger chain via hybrid analog-digital strategies
Sebastián V. Romero, Xi Chen, G. Platero +1 more·Oct 17, 2023
The Su-Schrieffer-Heeger (SSH) chain, which serves as a paradigmatic model for comprehending topological phases and their associated edge states, plays an essential role in advancing our understanding of quantum materials and quantum information proc...
Heralded Optical Entanglement Generation via the Graph Picture of Linear Quantum Networks
Seungbeom Chin, Marcin Karczewski, Yong-Su Kim·Oct 16, 2023
Non-destructive heralded entanglement with photons is a valuable resource for quantum information processing. However, they generally entail ancillary particles and modes that amplify the circuit intricacy. To address this challenge, a recent work \c...
Quantum error channels in high energetic photonic systems
B. Hiesmayr, W. Krzemie'n, M. Bala·Oct 16, 2023
In medical applications—such as positron emission tomography (PET)—511 keV photons that experience Compton scattering are studied. We present a consistent framework based on quantum error-correction channels—intensively studied in quantum computing—t...
Randomized Benchmarking of Local Zeroth-Order Optimizers for Variational Quantum Systems
Lucas Tecot, Cho-Jui Hsieh·Oct 14, 2023
In the field of quantum information, classical optimizers play an important role. From experimentalists optimizing their physical devices to theorists exploring variational quantum algorithms, many aspects of quantum information require the use of a ...
Mixed-state Quantum Phases: Renormalization and Quantum Error Correction
Shengqi Sang, Yijian Zou, Timothy H. Hsieh·Oct 12, 2023
Open system quantum dynamics can generate a variety of long-range entangled mixed states, yet it has been unclear in what sense they constitute phases of matter. To establish that two mixed states are in the same phase, as defined by their two-way co...
Approximate Quantum Codes From Long Wormholes
Gregory S. Bentsen, Phuc Nguyen, Brian Swingle·Oct 11, 2023
We discuss families of approximate quantum error correcting codes which arise as the nearly-degenerate ground states of certain quantum many-body Hamiltonians composed of non-commuting terms. For exact codes, the conditions for error correction can b...
Information scrambling in free fermion systems with a sole interaction
Qucheng Gao, Pengfei Zhang, Xiao Chen·Oct 10, 2023
It is well established that the presence of single impurity can have a substantial impact on the transport properties of quantum many-body systems at low temperature. In this work, we investigate a close analog of this problem from the perspective of...
Quantum reservoir computing with repeated measurements on superconducting devices
T. Yasuda, Yudai Suzuki, T. Kubota +6 more·Oct 10, 2023
Reservoir computing is a machine learning framework that uses artificial or physical dissipative dynamics to predict time-series data using nonlinearity and memory properties of dynamical systems. Quantum systems are considered as promising reservoir...
Learning high-accuracy error decoding for quantum processors
Johannes Bausch, A. W. Senior, F. Heras +15 more·Oct 9, 2023
Building a large-scale quantum computer requires effective strategies to correct errors that inevitably arise in physical quantum systems1. Quantum error-correction codes2 present a way to reach this goal by encoding logical information redundantly i...
Efficient preparation of the AKLT State with Measurement-based Imaginary Time Evolution
Tianqi Chen, Tim Byrnes·Oct 9, 2023
Quantum state preparation plays a crucial role in several areas of quantum information science, in applications such as quantum simulation, quantum metrology and quantum computing. However, typically state preparation requires resources that scale ex...
Single-qubit multi-party transmission using universal symmetric quantum cloning
Elijah Pelofske·Oct 7, 2023
This study considers the hypothetical quantum network case where Alice wishes to transmit one qubit of information (specifically a pure quantum state) to M parties, where M is some large number. The remote receivers locally perform single-qubit quant...
Valley Pseudospin Polarized Evanescent Coupling between Microwave Ring Resonator and Waveguide in Phononic Topological Insulators.
D. Hatanaka, Hiroaki Takeshita, Motoki Kataoka +3 more·Oct 6, 2023
A coupled ring-waveguide structure is at the core of bosonic wave-based information processing systems, enabling advanced wave manipulations such as filtering, routing, and multiplexing. However, its miniaturization is challenging due to momentum con...