Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,326 papers in 12 months (-9% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Efficient Computation of the Quantum Rate-Distortion Function
Kerry He, J. Saunderson, Hamza Fawzi·Sep 28, 2023
The quantum rate-distortion function plays a fundamental role in quantum information theory, however there is currently no practical algorithm which can efficiently compute this function to high accuracy for moderate channel dimensions. In this paper...
Modular quantum signal processing in many variables
Z. M. Rossi, Jack L. Ceroni, I. Chuang·Sep 28, 2023
Despite significant advances in quantum algorithms, quantum programs in practice are often expressed at the circuit level, forgoing helpful structural abstractions common to their classical counterparts. Consequently, as many quantum algorithms have ...
First-order crosstalk mitigation in parallel quantum gates driven with multi-photon transitions
Matthew N. H. Chow, C. Yale, Ashlyn D. Burch +4 more·Sep 27, 2023
We demonstrate an order of magnitude reduction in the sensitivity to optical crosstalk for neighboring trapped-ion qubits during simultaneous single-qubit gates driven with individual addressing beams. Gates are implemented via two-photon Raman trans...
Multi-mode Cavity Centric Architectures for Quantum Simulation
S. Stein, Fei Hua, Chenxu Liu +6 more·Sep 27, 2023
Near-term quantum computing technologies grapple with huge complexity overheads, hindering their ability to induce algorithms, necessitating engineering and scientific innovations. One class of problems of interest is Quantum Simulation, whereby quan...
Splitting decoders for correcting hypergraph faults
Nicolas Delfosse, A. Paetznick, Jeongwan Haah +1 more·Sep 27, 2023
The surface code is one of the most popular quantum error correction codes. It comes with efficient decoders, such as the Minimum Weight Perfect Matching (MWPM) decoder and the Union-Find (UF) decoder, allowing for fast quantum error correction. For ...
Quantum computer-enabled receivers for optical communication
J.C. Crossman, Spencer Dimitroff, Lukasz Cincio +1 more·Sep 27, 2023
Optical communication is the standard for high-bandwidth information transfer in today’s digital age. The increasing demand for bandwidth has led to the maturation of coherent transceivers that use phase- and amplitude-modulated optical signals to en...
Entanglement entropy from non-equilibrium lattice simulations
Andrea Bulgarelli, Marco Panero·Sep 27, 2023
Entanglement entropy encodes important features of strongly interacting quantum many-body systems and gauge theories, but its analytical study is still limited to systems with high level of symmetry. This motivates the search for efficient techniques...
Group twirling and noise tailoring for multiqubit controlled phase gates
Guoding Liu, Ziyi Xie, Zitai Xu +1 more·Sep 27, 2023
Group twirling is crucial in quantum information processing, particularly in randomized benchmarking and randomized compiling. While protocols based on Pauli twirling have been effectively crafted to transform arbitrary noise channels into Pauli chan...
Holographic entropy inequalities and the topology of entanglement wedge nesting
Bartłomiej Czech, S. Shuai, Yixu Wang +1 more·Sep 26, 2023
We prove two new infinite families of holographic entropy inequalities. A key tool is a graphical arrangement of terms of inequalities that is based on entanglement wedge nesting. It associates the inequalities with tessellations of the torus and the...
Investigation of factors regarding the effects of COVID-19 pandemic on college students’ depression by quantum annealer
Junggu Choi, Kion Kim, Soohyun Park +5 more·Sep 26, 2023
Diverse cases regarding the impact, with its related factors, of the COVID-19 pandemic on mental health have been reported in previous studies. In this study, multivariable datasets were collected from 751 college students who could be easily affecte...
One-Shot Non-Catalytic Distributed Purity Distillation
Sayantan Chakraborty, Rahul Jain, Pranab Sen·Sep 26, 2023
In this paper we revisit the problem of distributed purity distillation in the one-shot setting. The problem considers a bipartite quantum state ρAB shared between two parties Alice and Bob, who are allowed local unitary operations and one-way classi...
Quantum Information Driven Ansatz (QIDA): Shallow-Depth Empirical Quantum Circuits from Quantum Chemistry.
Davide Materia, Leonardo Ratini, Celestino Angeli +1 more·Sep 26, 2023
Hardware-efficient empirical variational ansätze for Variational Quantum Eigensolver (VQE) simulations of quantum chemistry often lack a direct connection to classical quantum chemistry methods. In this work, we propose a method to bridge this gap by...
Quantum tensor network algorithms for evaluation of spectral functions on quantum computers
M. L. Wall, Aidan J. Reilly, J. V. Van Dyke +2 more·Sep 26, 2023
We investigate quantum algorithms derived from tensor networks to simulate the static and dynamic properties of quantum many-body systems. Using a sequentially prepared quantum circuit representation of a matrix product state (MPS) that we call a qua...
SuperGaN: Synthesis of NbTiN/GaN/NbTiN Tunnel Junctions
M. Cyberey, S. Hinton, Christopher M. Moore +2 more·Sep 26, 2023
Nb-based circuits have broad applications in quantum-limited photon detectors, low-noise parametric amplifiers, superconducting digital logic circuits, and low-loss circuits for quantum computing. The current state-of-the-art approach for superconduc...
Statistical Analysis of Quantum State Learning Process in Quantum Neural Networks
Hao Zhang, Chenghong Zhu, M. Jing +1 more·Sep 26, 2023
Quantum neural networks (QNNs) have been a promising framework in pursuing near-term quantum advantage in various fields, where many applications can be viewed as learning a quantum state that encodes useful data. As a quantum analog of probability d...
Error and Disturbance as Irreversibility with Applications: Unified Definition, Wigner--Araki--Yanase Theorem and Out-of-Time-Order Correlator
Haruki Emori, Hiroyasu Tajima·Sep 25, 2023
Defining an error of measurement has long been a foundational problem in science: even in classical experiments, data are statistical and admit no single universally optimal definition of error. In quantum mechanics, the challenge deepens: observed e...
A no free lunch theorem for untrained quantum circuits in machine learning
Steven Herbert·Sep 25, 2023
This paper proves that if an untrained quantum circuit is used as a resource in a machine learning workflow, then on average no quantum circuit is better than any other that can achieve the same set of computational effects. This is the titular no fr...
Quantum Superpositions of Conscious States in a Minimal Integrated Information Model
Kelvin J. McQueen, Ian T. Durham, Markus P. Mueller·Sep 25, 2023
Could there be quantum superpositions of conscious states, as suggested by the Wigner's friend thought experiment? Mathematical theories of consciousness, notably Integrated Information Theory (IIT), make this question more precise by associating phy...
Quantum Memory: A Missing Piece in Quantum Computing Units
Chenxu Liu, M. Wang, S. Stein +2 more·Sep 25, 2023
Memory is an indispensable component in classical computing systems. While the development of quantum computing is still in its early stages, current quantum processing units mainly function as quantum registers. Consequently, the actual role of quan...
Resource-efficient generalized quantum subspace expansion
Bo-Jhang Yang, N. Yoshioka, H. Harada +5 more·Sep 25, 2023
Realizing practical quantum computing requires overcoming a number of computation errors and the limitation of device size, which have intensively been tackled by quantum error mitigation (QEM) these days. As a unified approach of noise-agnostic QEM,...