Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Agile meets quantum: a novel genetic algorithm model for predicting the success of quantum software development project
A. Khan, Muhammad Azeem Akbar, V. Lahtinen +1 more·Jan 16, 2024
Quantum software systems represent a new realm in software engineering, utilizing quantum bits (Qubits) and quantum gates (Qgates) to solve the complex problems more efficiently than classical counterparts. Agile software development approaches are c...
Creating and controlling global Greenberger-Horne-Zeilinger entanglement on quantum processors
Ze-Han Bao, Shibo Xu, Zixuan Song +30 more·Jan 16, 2024
Greenberger-Horne-Zeilinger (GHZ) states, also known as two-component Schrödinger cats, play vital roles in the foundation of quantum physics and the potential quantum applications. Enlargement in size and coherent control of GHZ states are both cruc...
Quantum information processing with superconducting circuits: realizing and characterizing quantum gates and algorithms in open quantum systems
H. Sakhouf·Jan 14, 2024
This thesis focuses on quantum information processing using the superconducting device, especially, on realizing quantum gates and algorithms in open quantum systems. Such a device is constructed by transmon-type superconducting qubits coupled to a s...
A Reinforcement Learning Environment for Directed Quantum Circuit Synthesis
Michael Kolle, Tom Schubert, Philipp Altmann +3 more·Jan 13, 2024
With recent advancements in quantum computing technology, optimizing quantum circuits and ensuring reliable quantum state preparation have become increasingly vital. Traditional methods often demand extensive expertise and manual calculations, posing...
Quantum eigenvalue processing
Guang Hao Low, Yuan Su·Jan 11, 2024
Many problems in linear algebra -- such as those arising from non-Hermitian physics and differential equations -- can be solved on a quantum computer by processing eigenvalues of the non-normal input matrices. However, the existing Quantum Singular V...
Geodesic algorithm for unitary gate design with time-independent Hamiltonians
D. Lewis, R. Wiersema, J. Carrasquilla +1 more·Jan 11, 2024
Larger multiqubit quantum gates allow shallower, more efficient quantum circuits, which could decrease the prohibitive effect of noise on algorithms for noisy intermediate-scale quantum (NISQ) devices and fault-tolerant error correction schemes. Such...
Comparing Classical and Quantum Ground State Preparation Heuristics
Katerina Gratsea, Jakob S. Kottmann, Peter D. Johnson +1 more·Jan 10, 2024
One promising field of quantum computation is the simulation of quantum systems, and specifically, the task of ground state energy estimation (GSEE). Ground state preparation (GSP) is a crucial component in GSEE algorithms, and classical methods like...
S-FABLE and LS-FABLE: Fast approximate block-encoding algorithms for unstructured sparse matrices
Parker Kuklinski, Benjamin Rempfer·Jan 8, 2024
The Fast Approximate BLock-Encoding algorithm (FABLE) is a technique to block-encode arbitrary $N\times N$ dense matrices into quantum circuits using at most $O(N^2)$ one and two-qubit gates and $\mathcal{O}(N^2\log{N})$ classical operations. The met...
Non-adiabatic holonomies as photonic quantum gates
Vera Neef, Julien Pinske, T. Wolterink +4 more·Jan 8, 2024
One of the most promising nascent technologies, quantum computation faces a major challenge: The need for stable computational building blocks. We present the quantum-optical realization of non-adiabatic holonomies that can be used as single-qubit qu...
Cavity magnonics with domain walls in insulating ferromagnetic wires
M. Trif, Y. Tserkovnyak·Jan 6, 2024
Magnetic domain walls (DWs) are topological defects that exhibit robust low-energy modes that can be harnessed for classical and neuromorphic computing. However, the quantum nature of these modes has been elusive thus far. Using the language of cavit...
Ultrahigh-fidelity spatial mode quantum gates in high-dimensional space by diffractive deep neural networks
Qianke Wang, Jun Liu, Dawei Lyu +1 more·Jan 5, 2024
While the spatial mode of photons is widely used in quantum cryptography, its potential for quantum computation remains largely unexplored. Here, we showcase the use of the multi-dimensional spatial mode of photons to construct a series of high-dimen...
Loop Feynman integration on a quantum computer
Jorge J. Martínez de Lejarza, Leandro Cieri, M. Grossi +2 more·Jan 5, 2024
This work investigates in detail the performance and advantages of a new quantum Monte Carlo integrator, dubbed quantum Fourier iterative amplitude estimation (QFIAE), to numerically evaluate for the first time loop Feynman integrals in a near-term q...
One-step implementation of a nonadiabatic geometric fSim gate in superconducting circuits
Meng-Ru Yun, Zheng Shan, L. Sun +4 more·Jan 4, 2024
Due to its significant application in reducing algorithm depth, fSim gates have attracted a lot of attention. However, during the implementation of quantum gates, fluctuations in control parameters and decoherence caused by the environment may lead t...
A noise-limiting quantum algorithm using mid-circuit measurements for dynamical correlations at infinite temperature
Etienne Granet, Henrik Dreyer·Jan 4, 2024
It is generally considered that the signal output by a quantum circuit is attenuated exponentially fast in the number of gates. This letter explores how algorithms using mid-circuit measurements and classical conditioning as computational tools (and ...
Robust Quantum Gates against Correlated Noise in Integrated Quantum Chips.
Kangyuan Yi, Yong-Ju Hai, Kai Luo +9 more·Jan 3, 2024
As quantum circuits become more integrated and complex, additional error sources that were previously insignificant start to emerge. Consequently, the fidelity of quantum gates benchmarked under pristine conditions falls short of predicting their per...
Quantum State Preparation Using an Exact CNOT Synthesis Formulation
Hanyu Wang, Daniel Bochen Tan, Jason Cong +1 more·Jan 2, 2024
Minimizing the use of CNOT gates in quantum state preparation is a crucial step in quantum compilation, as they introduce coupling constraints and more noise than single-qubit gates. Reducing the number of CNOT gates can lead to more efficient and ac...
Quantum multiple gray scale images encryption scheme in the bit plane representation model
Claire I. Levaillant·Jan 1, 2024
After introducing a bit-plane quantum representation for a multi-image, we present a novel way to encrypt/decrypt multiple images using a quantum computer. Our encryption scheme is based on a two-stage scrambling of the images and of the bit planes o...
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 ...
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...
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...