Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Implementing semiclassical Szegedy walks in classical-quantum circuits for homomorphic encryption
S. A. Ortega, Pablo Fernández, M. Martin-Delgado·Dec 2, 2024
As cloud services continue to expand, the security of private data stored and processed in these environments has become paramount. This work delves into quantum homomorphic encryption (QHE), an emerging technology that facilitates secure computation...
Quantum Convolutional Neural Network with Flexible Stride
Kai-huan Yu, Song Lin, Bin-Bin Cai·Dec 1, 2024
Convolutional neural network is a crucial tool for machine learning, especially in the field of computer vision. Its unique structure and characteristics provide significant advantages in feature extraction. However, with the exponential growth of da...
Shallow Quantum Scalar Products with Phase Information
Lila Cadi Tazi, D. M. Ramo, Alex J W Thom·Nov 28, 2024
The measurement of scalar products between two vectors is a common task in scientific computing and, by extension, in quantum computing. In this work, we introduce two alternative quantum circuits for computing scalar products with phase information,...
Bit symmetry entails the symmetry of the quantum transition probability
Gerd Niestegge·Nov 27, 2024
It is quite common to use the generalized probabilistic theories (GPTs) as generic models to reconstruct quantum theory from a few basic principles and to gain a better understanding of the probabilistic or information theoretic foundations of quantu...
Information geometry of bosonic Gaussian thermal states
Zixin Huang, Mark M. Wilde·Nov 27, 2024
Bosonic Gaussian thermal states form a fundamental class of states in quantum information science. This paper explores the information geometry of these states, focusing on characterizing the distance between two nearby states and the geometry induce...
Simulating Vibrational Dynamics on Bosonic Quantum Devices.
Shreyas Malpathak, Sangeeth Das Kallullathil, A. Izmaylov·Nov 27, 2024
Bosonic quantum devices, which utilize harmonic oscillator modes to encode information, are emerging as a promising alternative to conventional qubit-based quantum devices, especially for the simulation of vibrational dynamics and spectroscopy. We pr...
Generating non-Clifford gate operations through exact mapping between Majorana fermions and Z4 parafermions
Ali Hamed Safwan, R. W. Bomantara·Nov 27, 2024
Majorana fermions and their generalizations to Zn parafermions are considered promising building blocks of fault-tolerant quantum computers for their ability to encode quantum information nonlocally. In such topological quantum computers, highly robu...
Towards quantum error correction with two-body gates for quantum registers based on nitrogen-vacancy centers in diamond
Daniel Dulog, M. Plenio·Nov 27, 2024
Color centers in diamond provide a possible hardware for quantum computation, where the most basic quantum information processing unit are nitrogen-vacancy (NV) centers, each in contact with adjacent carbon nuclear spins. With specifically tailored d...
Quantum simulation of the Sachdev-Ye-Kitaev model using time-dependent disorder in optical cavities
Rahel Baumgartner, Pietro Pelliconi, Soumik Bandyopadhyay +5 more·Nov 26, 2024
The Sachdev--Ye--Kitaev (SYK) model is a paradigm for extreme quantum chaos, non-Fermi-liquid behavior, and holographic matter. Yet, the dense random all-to-all interactions that characterize it are an extreme challenge for realistic laboratory reali...
Distance-Security Tradeoffs for Repeaterless End-to-End QKD Networks
Sumit Chaudhary, Davide Li Calsi, JinHyeock Choi +2 more·Nov 26, 2024
Quantum Key Distribution (QKD) offers provably secure, information-theoretic key exchange, but in long-distance scenarios without quantum repeaters, Trusted Nodes (TNs) are commonly employed despite introducing critical security risks. We propose a r...
High-Level Surface Code Decoding via Parallel FFNNs on CIM Platforms
Hao Wang, Erjia Xiao, Wenbo Mu +9 more·Nov 26, 2024
Due to the high sensitivity of qubits to environmental noise, which leads to decoherence and information loss, active quantum error correction(QEC) is essential. Surface codes represent one of the most promising fault-tolerant QEC schemes, but they r...
Soft information decoding with superconducting qubits
Maurice D. Hanisch, Bence Het'enyi, James R. Wootton·Nov 25, 2024
Quantum error correction promises a viable path to fault-tolerant computations, enabling exponential error suppression when the device's error rates remain below the protocol's threshold. This threshold, however, strongly depends on the classical met...
A Review of Design Concerns in Superconducting Quantum Circuits
Eli M. Levenson-Falk, S. Shanto·Nov 25, 2024
In this short review we describe the process of designing a superconducting circuit device for quantum information applications. We discuss the factors that must be considered to implement a desired effective Hamiltonian on a device. We describe th...
Chip-to-chip quantum photonic controlled-NOT gate teleportation
Lantian Feng, Ming Zhang, Di Liu +7 more·Nov 23, 2024
Quantum networks provide a novel framework for quantum information processing, significantly enhancing system capacity through the interconnection of modular quantum nodes. Beyond the capability to distribute quantum states, the ability to remotely c...
Constructing multipartite planar maximally entangled states from phase states and quantum secret sharing protocol
Lahoucine Bouhouch, Yassine Dakir, A. Slaoui +1 more·Nov 22, 2024
In this paper, we explore the construction of planar maximally entangled (PME) states from phase states. PME states form a class of n-partite states in which any subset of adjacent particles whose size is less than or equal to half the total number o...
Imperfect-Information Games on Quantum Computers: A Case Study in Skat
Erika Schulze, Ulrich Armbrüster, Gabriel Maresch +1 more·Nov 22, 2024
For decades it is known that Quantum Computers might serve as a tool to solve a very specific kind of problems that have long thought to be incalculable. Some of those problems are of a combinatorial nature, with the quantum advantage arising from th...
Continuous Automatic Polarization Channel Stabilization from Heterodyne Detection of Coexisting Dim Reference Signals
Joseph C. Chapman, M. Alshowkan, K. Reaz +2 more·Nov 22, 2024
Quantum networking continues to encode information in polarization states due to ease and precision. The variable environmental polarization transformations induced by deployed fiber need correction for deployed quantum networking. Here we present a ...
Fault-tolerant and secure long-distance quantum communication via uncorrectable-error-injection
IlKwon Sohn, Boseon Kim, Kwang-il Bae +4 more·Nov 22, 2024
Quantum networks aim to facilitate the fault-tolerant and secure transmission of quantum states across distant devices. The widely adopted quantum teleportation scheme requires multiple rounds of entanglement swapping and purification, leading to sig...
Capacity-Achieving Entanglement Purification Protocol for Pauli Dephasing Channel
Ozlem Erkilic, Matthew S. Winnel, Aritra Das +4 more·Nov 21, 2024
Quantum communication enables secure information transmission and entanglement distribution, but these tasks are fundamentally limited by the capacities of quantum channels. While quantum repeaters can mitigate losses and noise, entanglement swapping...
Optimized four-qubit quantum error correcting code for amplitude damping channel
Xuanhui Mao, Qiang-Da Xu, Liang Jiang·Nov 20, 2024
Quantum error correction (QEC) is essential for reliable quantum information processing. Targeting a particular error channel, both the encoding and the recovery channel can be optimized through a biconvex optimization to give a high-performance, noi...