Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Decoherence in exchange-coupled quantum spin-qubit systems: Impact of multiqubit interactions and geometric connectivity
Quan Fu, Jiahao Wu, Xin Wang·Jan 1, 2024
We investigate the impact of different connectivities on the decoherence time in quantum systems under quasi-static Heisenberg noise. We considered three types of elementary units, including node, stick and triangle and connect them into ring, chain,...
Quantum walk on simplicial complexes for simplicial community detection
E. Song·Jan 1, 2024
Quantum walks have emerged as a transformative paradigm in quantum information processing and can be applied to various graph problems. This study explores discrete-time quantum walks on simplicial complexes, a higher-order generalization of graph st...
Fault-Tolerant Quantum Computation by Hybrid Qubits with Bosonic Cat Code and Single Photons
Jaehak Lee, Nuri Kang, Seok-Hyung Lee +3 more·Dec 31, 2023
Hybridizing different degrees of freedom or physical platforms potentially offers various advantages in building scalable quantum architectures. Here, we introduce a fault-tolerant hybrid quantum computation by building on the advantages of both disc...
Proximal quantum control of spin and spin ensemble with localized control field from skyrmions
M. F. Chowdhury, Mohamad Niknam, M. Rajib +2 more·Dec 31, 2023
Selective control of individual spin qubits is needed for scalable quantum computing based on spin states. Achieving high-fidelity in both single and two-qubit gates, essential components of universal quantum computers, necessitates highly localized ...
Two quantum algorithms for solving the one-dimensional advection-diffusion equation
Julia Ingelmann, Sachin S. Bharadwaj, Philip R. Pfeffer +2 more·Dec 30, 2023
Two quantum algorithms are presented for the numerical solution of a linear one-dimensional advection-diffusion equation with periodic boundary conditions. Their accuracy and performance with increasing qubit number are compared point-by-point with e...
The lower energy consumption in cryptocurrency mining processes by SHA-256 Quantum circuit design used in hybrid computing domains
A. Orun, Fatih Kurugollu·Dec 30, 2023
Cryptocurrency mining processes always lead to a high energy consumption at considerably high production cost, which is nearly one-third of cryptocurrency (e.g. Bitcoin) price itself. As the core of mining process is based on SHA-256 cryptographic ha...
Quantum convolutional channels and multiparameter families of 2-unitary matrices
Rafał Bistroń, Jakub Czartowski, Karol Życzkowski·Dec 29, 2023
Many alternative approaches to construct quantum channels with large entangling capacity were proposed in the past decade, resulting in multiple isolated gates. In this work, we put forward a novel one, inspired by convolution, which provides greater...
Boson-fermion complementarity in a linear interferometer: An identity relating the determinant and permanent of a matrix
Michael G. Jabbour, Nicolas J. Cerf·Dec 29, 2023
Bosonic and fermionic statistics are well known to give rise to antinomic behaviors, most notably boson bunching vs fermion antibunching. Here, we establish a fundamental relation that combines bosonic and fermionic multiparticle interferences in an ...
Enhancing the Yield of Bucket Brigade Quantum Random Access Memory using Redundancy Repair
Dongmin Kim, Sengthai Heng, Sanghyeon Lee +1 more·Dec 29, 2023
Quantum Random Access Memory (qRAM) is an essential computing element for running oracle-based quantum algorithms. qRAM exploits quantum superposition to access all data stored in the memory cells simultaneously and guarantees the superior performanc...
Mapping of valley splitting by conveyor-mode spin-coherent electron shuttling
Mats Volmer, Tom Struck, Arnau Sala +10 more·Dec 29, 2023
In Si/SiGe heterostructures, the low-lying excited valley state seriously limits the operability and scalability of electron spin qubits. For characterizing and understanding the local variations in valley splitting, fast probing methods with high sp...
Empowering a qudit-based quantum processor by traversing the dual bosonic ladder
Long B. Nguyen, Noah Goss, K. Siva +6 more·Dec 29, 2023
High-dimensional quantum information processing has emerged as a promising avenue to transcend hardware limitations and advance the frontiers of quantum technologies. Harnessing the untapped potential of the so-called qudits necessitates the developm...
Universality Classes for Purification in Nonunitary Quantum Processes
Andrea De Luca, Chunxiao Liu, Adam Nahum +1 more·Dec 29, 2023
We consider the universal aspects of two problems: (i) the singular value structure of a product M t = m t m t − 1 … m 1 of many large independent random matrices and (ii) the slow purification of a large number...
Extracting error thresholds through the framework of approximate quantum error correction condition
Yuan-Yuan Zhao, Dong E. Liu·Dec 28, 2023
The robustness of quantum memory against physical noises is measured by two methods: the exact and approximate quantum error correction (QEC) conditions for error recoverability and the decoder-dependent error threshold which assesses if the logical ...
Hybrid Quantum Cycle Generative Adversarial Network for Small Molecule Generation
M. Anoshin, A. Sagingalieva, C. Mansell +4 more·Dec 28, 2023
The drug design process currently requires considerable time and resources to develop each new compound that enters the market. This work develops an application of hybrid quantum generative models based on the integration of parameterized quantum ci...
Efficient Decoupling of a Nonlinear Qubit Mode from Its Environment
F. Pfeiffer, M. Werninghaus, C. Schweizer +21 more·Dec 28, 2023
To control and measure the state of a quantum system, it must necessarily be coupled to external degrees of freedom. This inevitably leads to spontaneous emission via the Purcell effect, photon-induced dephasing from measurement backaction, and error...
PT-symmetric mapping of three states and its implementation on a cloud quantum processor
Y. Balytskyi, Yevgen V. Kotukh, Gennady Khalimov +1 more·Dec 27, 2023
$\mathcal{PT}$-symmetric systems have garnered significant attention due to their unconventional properties. Despite the growing interest, there remains an ongoing debate about whether these systems outperform their Hermitian counterparts in practica...
Universal topological quantum computing via double-braiding in SU(2) Witten–Chern–Simons theory
A. Kaufmann, S. X. Cui·Dec 27, 2023
We study the problem of universality in the anyon model described by the SU(2) Witten–Chern–Simons theory at level k. A classic theorem of Freedman–Larsen–Wang states that for k≥3,k≠4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasy...
Workflow for practical quantum chemical calculations with a quantum phase estimation algorithm: electronic ground and π-π* excited states of benzene and its derivatives.
Y. Ino, Misaki Yonekawa, Hideto Yuzawa +2 more·Dec 27, 2023
Quantum computers are expected to perform full-configuration interaction calculations with less computational resources compared to classical ones, thanks to the use of quantum phase estimation (QPE) algorithms. However, only a limited number of QPE-...
Evolutionary Reduction of the Laser Noise Impact on Quantum Gates
Tam'si Ley, A. Leonteva, Johannes Schachenmayer +1 more·Dec 27, 2023
As the size of quantum hardware progressively increases, the conjectured computational advantages of quantum technologies tend to be threatened by noise, which randomly corrupts the design of quantum logical gates. Several methods already exist to re...
Derivation of Hamiltonians from time propagations using Born machines
Hikaru Wakaura, A. B. Suksmono·Dec 27, 2023
Recently there are more promising qubit technology such as Majorana fermions Rydberg atoms and Silicon quantum dot have yet to be developed for realizing a quantum computer than Superconductivity and Ion trap into the world The simulation of the quan...