Papers
Live trends in quantum computing research, updated daily from arXiv.
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28,807
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Research Volume
13,810 papers in 12 months (-12% vs prior quarter)
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Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Optimizing quantum error correction protocols with erasure qubits
Shouzhen Gu, Yotam Vaknin, Alex Retzker +1 more·Aug 1, 2024
Erasure qubits offer a promising avenue toward reducing the overhead of quantum error correction (QEC) protocols. However, they require additional operations, such as erasure checks, that may add extra noise and increase runtime of QEC protocols. To ...
Classification of joint quantum measurements based on entanglement cost of localization
Jef Pauwels, Alejandro Pozas-Kerstjens, Flavio Del Santo +1 more·Aug 1, 2024
Despite their importance in quantum theory, joint quantum measurements remain poorly understood. An intriguing conceptual and practical question is whether joint quantum measurements on separated systems can be performed without bringing them togethe...
Krylov complexity of purification
Rathindra Nath Das, Takato Mori·Aug 1, 2024
In quantum systems, purification can map mixed states into pure states and a non-unitary evolution into a unitary one by enlarging the Hilbert space. We establish a connection between the complexities of mixed quantum states and their purification, p...
Perfect Wave Transfer in Continuous Quantum Systems
Per Moosavi, Matthias Christandl, Gian Michele Graf +1 more·Aug 1, 2024
The transfer of information from one part of a quantum system to another is fundamental to the understanding and design of quantum information processing devices. In the realm of discrete systems such as spin chains, inhomogeneous networks have been ...
Optimally robust shortcuts to population inversion in cat-state qubits
Shao-Wei Xu, Zhong-Zheng Zhang, Yue-Ying Guo +2 more·Aug 1, 2024
Cat-state qubits formed by photonic coherent states are a promising candidate for realizing fault-tolerant quantum computing. Such logic qubits have a biased noise channel that the bit-flip error dominates over all the other errors. In this manuscrip...
A Search for High-Threshold Qutrit Magic State Distillation Routines
Shiroman Prakash, Rishabh Singhal·Aug 1, 2024
Determining the best attainable threshold for qudit magic state distillation is directly related to the question of whether or not contextuality is sufficient for universal quantum computation. We show that the performance of a qudit correcting code ...
To reset, or not to reset—that is the question
G. Geh'er, Marcin Jastrzębski, Earl T. Campbell +1 more·Aug 1, 2024
Whether to reset qubits, or not, during quantum error correction experiments is a question of both foundational and practical importance for quantum computing. Text-book quantum error correction demands that qubits are reset after measurement. Howeve...
Demonstrating the Potential of Adaptive LMS Filtering on FPGA-Based Qubit Control Platforms for Improved Qubit Readout in 2D and 3D Quantum Processing Units
Hans Johnson, N. Bornman, Taeyoon Kim +3 more·Aug 1, 2024
Advancements in quantum computing underscore the critical need for sophisticated qubit readout techniques to accurately discern quantum states. This abstract presents our research intended for optimizing readout pulse fidelity for 2D and 3D Quantum P...
Optimizing quantum circuits with evolutionary algorithms for stable Boolean gates, elementary cellular automata, and highly entangled quantum states
Shailendra Bhandari, Stefano Nichele, Sergiy Denysov +1 more·Aug 1, 2024
We investigate the potential of bio-inspired evolutionary algorithms for designing quantum circuits with specific goals, focusing on two particular tasks. The first one is motivated by the ideas of Artificial Life that are used to reproduce stochasti...
Redefining Lexicographical Ordering: Optimizing Pauli String Decompositions for Quantum Compiling
Qunsheng Huang, David Winderl, A. M. D. Griend +1 more·Aug 1, 2024
In quantum computing, the efficient optimization of Pauli string decompositions is a crucial aspect for the compilation of quantum circuits for many applications, such as chemistry simulations and quantum machine learning. In this paper, we propose a...
Bayesian mitigation of measurement errors in multiqubit experiments
F. Cosco, F. Plastina, N. L. Gullo·Aug 1, 2024
In Phys. Rev. A 108, L060402 (2023), we introduced a Bayesian measurement error mitigation algorithm, which leveraged complete information from the readout signal, and validated the protocol on a quantum device with five superconducting qubits. Here,...
Effect of Etching Methods on Dielectric Losses in Transmons
T. A. Chudakova, G. S. Mazhorin, I. Trofimov +9 more·Aug 1, 2024
Superconducting qubits are considered as a promising platform for implementing a fault tolerant quantum computing. However, surface defects of superconductors and the substrate leading to qubit state decoherence and fluctuations in qubit parameters c...
Classical Benchmarks for Variational Quantum Eigensolver Simulations of the Hubbard Model
Antonios M. Alvertis, Abid Khan, T. Iadecola +2 more·Aug 1, 2024
Simulating the Hubbard model is of great interest to a wide range of applications within condensed matter physics, however its solution on classical computers remains challenging in dimensions larger than one. The relative simplicity of this model, e...
An Open-Source Library for Information Reconciliation in Continuous-Variable QKD
E. Cil, Laurent Schmalen·Aug 1, 2024
This paper presents an easy-to-use open-source software library for continuous-variable quantum key distribution (CV-QKD) systems. The library, written in C++, simplifies the crucial task of information reconciliation, ensuring that both communicatin...
Surface Code with Imperfect Erasure Checks
Kathleen M. Chang, Shraddha Singh, J. Claes +3 more·Aug 1, 2024
Recently, a lot of effort has been devoted towards designing erasure qubits in which dominant physical noise excites leakage states whose population can be detected and returned to the qubit subspace. Interest in these erasure qubits has been driven ...
Multi-controlled single-qubit unitary gates based on the quantum Fourier transform and deep decomposition
V. Arsoski·Aug 1, 2024
We will present a few new generalizations of the multi-controlled X (MCX) gate that uses the quantum Fourier transform (QFT). Our focus is on implementations that don’t use ancilla qubits. Firstly, we will optimize QFT-MCX and prove that it is equiva...
Robust Implementation of Discrete-time Quantum Walks in Any Finite-dimensional Quantum System
Biswayan Nandi, S. Singha, Ankana Datta +2 more·Aug 1, 2024
Research has shown that quantum walks can accelerate certain quantum algorithms and act as a universal paradigm for quantum processing. The discrete-time quantum walk (DTQW) model, owing to its discrete nature, stands out as one of the most suitable ...
End-to-End Protocol for High-Quality QAOA Parameters with Few Shots
Tianyi Hao, Zichang He, R. Shaydulin +2 more·Aug 1, 2024
The quantum approximate optimization algorithm (QAOA) is a quantum heuristic for combinatorial optimization that has been demonstrated to scale better than state-of-the-art classical solvers for some problems. For a given problem instance, QAOA perfo...
Beyond full statevector simulation with Qibo
Andrea Pasquale, Andrea Papaluca, Renato M. S. Farias +3 more·Aug 1, 2024
In this proceedings, we present two new quantum circuit simulation protocols recently added as optional backends to Qibo, an open-source framework for quantum simulation, hardware control and calibration. We describe the current status of the framewo...
Resource-efficient algorithm for estimating the trace of quantum state powers
Myeongjin Shin, Junseo Lee, Seungwoo Lee +1 more·Aug 1, 2024
Estimating the trace of quantum state powers, Tr(ρk), for k identical quantum states is a fundamental task with numerous applications in quantum information processing, including nonlinear function estimation of quantum states and entanglement detect...