Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Quantum spectral clustering algorithm for unsupervised learning
Qing Li, Yuhan Huang, Shan Jin +2 more·Mar 7, 2022
Clustering is one of the most crucial problems in unsupervised learning, and the well-known k-means algorithm can be implemented on a quantum computer with a significant speedup. However, for the clustering problems that cannot be solved using the k-...
Quantum Differential Privacy in the Local Model
Armando Angrisani, E. Kashefi·Mar 7, 2022
Differential privacy provides a robust framework for protecting sensitive data, while maintaining its utility for computation. In essence, a differentially private algorithm takes as input the data of multiple parties, and returns an output disclosin...
Complex Field Formulation of the Quantum Estimation Theory
M. Muñoz, L. Pereira, C. Vargas +2 more·Mar 6, 2022
We present a complex field formulation of the quantum estimation theory that works natively with complex statistics on the dependence of complex parameters. This formulation states new complex versions of the main quantities and results of the estima...
Variational Quantum Algorithm for Approximating Convex Roofs
G. Androulakis, Ryan McGaha·Mar 4, 2022
Many entanglement measures are first defined for pure states of a bipartite Hilbert space, and then extended to mixed states via the convex roof extension. In this article we alter the convex roof extension of an entanglement measure, to produce a se...
On-demand directional microwave photon emission using waveguide quantum electrodynamics
B. Kannan, Aziza Almanakly, Youngkyu Sung +16 more·Mar 2, 2022
Routing quantum information between non-local computational nodes is a foundation for extensible networks of quantum processors. Quantum information transfer between arbitrary nodes is generally mediated either by photons that propagate between them ...
Quantum Image Processing
Alok Anand, M. Lyu, P. S. Baweja +1 more·Mar 1, 2022
Image processing is popular in our daily life because of the need to extract essential information from our 3D world, including a variety of applications in widely separated fields like bio-medicine, economics, entertainment, and industry. The nature...
Quantum capacities of transducers
Chiao-Hsuan Wang, Fangxin Li, Liang Jiang·Feb 28, 2022
High-performance quantum transducers, which faithfully convert quantum information between disparate physical carriers, are essential in quantum science and technology. Different figures of merit, including efficiency, bandwidth, and added noise, are...
Efficient NIZKs and Signatures from Commit-and-Open Protocols in the QROM
Jelle Don, S. Fehr, Christian Majenz +1 more·Feb 28, 2022
Commit-and-open Sigma-protocols are a popular class of protocols for constructing non-interactive zero-knowledge arguments and digital-signature schemes via the Fiat-Shamir transformation. Instantiated with hash-based commitments, the resulting non-i...
Summary: Chicago Quantum Exchange (CQE) Pulse-level Quantum Control Workshop
Kaitlin N. Smith, Gokul Subramanian Ravi, Thomas Alexander +14 more·Feb 28, 2022
Quantum information processing holds great promise for pushing beyond the current frontiers in computing. Specifically, quantum computation promises to accelerate the solving of certain problems, and there are many opportunities for innovation based ...
Quantum persistent homology
Bernardo Ameneyro, V. Maroulas, G. Siopsis·Feb 25, 2022
Persistent homology is a powerful mathematical tool that summarizes useful information about the shape of data allowing one to detect persistent topological features while one adjusts the resolution. However, the computation of such topological featu...
N-Electron Valence Perturbation Theory with Reference Wave Functions from Quantum Computing: Application to the Relative Stability of Hydroxide Anion and Hydroxyl Radical.
Alessandro Tammaro, D. Galli, J. Rice +1 more·Feb 25, 2022
Quantum simulations of the hydroxide anion and hydroxyl radical are reported, employing variational quantum algorithms for near-term quantum devices. The energy of each species is calculated along the dissociation curve, to obtain information about t...
Simple, Reliable, and Noise-Resilient Continuous-Variable Quantum State Tomography with Convex Optimization
Ingrid Strandberg·Feb 23, 2022
Precise reconstruction of unknown quantum states from measurement data, a process commonly called quantum state tomography, is a crucial component in the development of quantum information processing technologies. Many different tomography methods hav...
Universal Classical Optical Computing Inspired by Quantum Information Process
Yifan Sun, Qian Li, Ling‐Jun Kong +2 more·Feb 22, 2022
Quantum computing has attracted much attention in recent decades, since it is believed to solve certain problems substantially faster than traditional computing methods. Theoretically, such an advance can be obtained by networks of the quantum operat...
Quantum optimization of maximum independent set using Rydberg atom arrays
S. Ebadi, A. Keesling, M. Cain +21 more·Feb 18, 2022
Realizing quantum speedup for practically relevant, computationally hard problems is a central challenge in quantum information science. Using Rydberg atom arrays with up to 289 qubits in two spatial dimensions, we experimentally investigate quantum ...
Unsupervised strategies for identifying optimal parameters in Quantum Approximate Optimization Algorithm
Charles Moussa, Hongya Wang, T. Back +1 more·Feb 18, 2022
As combinatorial optimization is one of the main quantum computing applications, many methods based on parameterized quantum circuits are being developed. In general, a set of parameters are being tweaked to optimize a cost function out of the quantu...
Few-photon transport via a multimode nonlinear cavity: Theory and applications
Yunkai Wang, K. Fang·Feb 18, 2022
Few-photon transport via waveguide-coupled local quantum systems has attracted extensive theoretical and experimental studies. Most of the study has focused on atomic or atomic-like local quantum systems due to their strong light-matter interaction u...
A brief introduction to quantum algorithms
Shihao Zhang, Lvzhou Li·Feb 17, 2022
Quantum algorithms are demonstrated to outperform classical algorithms for certain problems and thus are promising candidates for efficient information processing. Herein we aim to provide a brief and popular introduction to quantum algorithms for bo...
The Platypus of the Quantum Channel Zoo
Felix Leditzky, D. Leung, Vikesh Siddhu +2 more·Feb 16, 2022
Understanding quantum channels and the strange behavior of their capacities is a key objective of quantum information theory. Here we study a remarkably simple, low-dimensional, single-parameter family of quantum channels with exotic quantum informat...
Uncertainty-disturbance relations and applications
Liang-Liang Sun, Kishor Bharti, Xiang Zhou +3 more·Feb 15, 2022
Uncertainty and intrinsic measurement disturbance, two fundamental concepts in quantum measurement, have conventionally been viewed as distinct and studied separately. In this work, we establish a fundamental connection between them, proving that unc...
High-frequency traveling-wave phononic cavity with sub-micron wavelength
Xin-Biao Xu, Jia-Qi Wang, Yuancai Yang +7 more·Feb 15, 2022
Thin-film gallium nitride (GaN) is a promising platform for phononic integrated circuits that hold great potential for scalable information processing processors. Here, an unsuspended traveling phononic resonator based on a high-acoustic-index-contra...