Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A Practical Overview of Quantum Computing: Is Exascale Possible?
J. Davenport, Jessica R. Jones, M. Thomason·Jun 21, 2023
Despite numerous advances in the field and a seemingly ever-increasing amount of investment, we are still some years away from seeing a production quantum computer in action. However, it is possible to make some educated guesses about the operational...
DGEMM on integer matrix multiplication unit
Hiroyuki Ootomo, K. Ozaki, Rio Yokota·Jun 21, 2023
Deep learning hardware achieves high throughput and low power consumption by reducing computing precision and specializing in matrix multiplication. For machine learning inference, fixed-point value computation is commonplace, where the input and out...
Toward Chemical Accuracy with Shallow Quantum Circuits: A Clifford-Based Hamiltonian Engineering Approach.
Jiace Sun, Lixue Cheng, Weitang Li·Jun 21, 2023
Achieving chemical accuracy with shallow quantum circuits is a significant challenge in quantum computational chemistry, particularly for near-term quantum devices. In this work, we present a Clifford-based Hamiltonian engineering algorithm, namely C...
A New Initial Distribution for Quantum Generative Adversarial Networks to Load Probability Distributions
Y. Sano, Ryosuke Koga, Masaya Abe +1 more·Jun 21, 2023
Quantum computers are gaining attention for their ability to solve certain problems faster than classical computers, and one example is the quantum expectation estimation algorithm that accelerates the widely-used Monte Carlo method in fields such as...
A Design Framework for the Simulation of Distributed Quantum Computing
Davide Ferrari, M. Amoretti·Jun 20, 2023
The growing demand for large-scale quantum computers is pushing research on Distributed Quantum Computing (DQC). Recent experimental efforts have demonstrated some of the building blocks for such a design. DQC systems are clusters of quantum processi...
Formation energies of silicon self-interstitials using periodic coupled cluster theory
Faruk Salihbegovi'c, A. Gallo, Andreas Grüneis·Jun 20, 2023
We present a study of the self-interstitial point defect formation energies in silicon using a range of quantum chemical theories including the coupled cluster (CC) method within a periodic supercell approach. We study the formation energies of the X...
Aquila: QuEra's 256-qubit neutral-atom quantum computer
J. Wurtz, A. Bylinskii, B. Braverman +10 more·Jun 20, 2023
The neutral-atom quantum computer"Aquila"is QuEra's latest device available through the Braket cloud service on Amazon Web Services (AWS). Aquila is a"field-programmable qubit array"(FPQA) operated as an analog Hamiltonian simulator on a user-configu...
Polynomial approximation on disjoint segments and amplification of approximation
Y. Malykhin, Konstantin Ryutin·Jun 20, 2023
We construct explicit easily implementable polynomial approximations of sufficiently high accuracy for locally constant functions on the union of disjoint segments. This problem has important applications in several areas of numerical analysis, compl...
Nonlinear Quantum Light Generation in Collective Spontaneous Emission.
Offek Tziperman, Gefen Baranes, A. Gorlach +6 more·Jun 20, 2023
Collective spontaneous emission occurs when multiple quantum emitters decay into common radiation modes, resulting in enhanced or suppressed emission. Here, we find that the quantum state of light collectively emitted from emitters exhibiting quantum...
Quantum Advantage of Noisy Grover's Algorithm
Jian Leng, Fan Yang, Xiang-Bin Wang·Jun 19, 2023
Quantum advantage is the core of quantum computing. Grover's search algorithm is the only quantum algorithm with proven advantage to any possible classical search algorithm. However, realizing this quantum advantage in practice is quite challenging s...
Optimization strategies in WAHTOR algorithm for quantum computing empirical ansatz: a comparative study
Leonardo Ratini, Chiara Capecci, L. Guidoni·Jun 19, 2023
By exploiting the invariance of the molecular Hamiltonian by a unitary transformation of the orbitals it is possible to significantly shorter the depth of the variational circuit in the variational quantum eigensolver (VQE) algorithm by using the wav...
Minimizing the negativity of quantum circuits in overcomplete quasiprobability representations
D. A. Kulikov, V. Yashin, A. Fedorov +1 more·Jun 19, 2023
The problem of simulatability of quantum processes using classical resources plays a cornerstone role for quantum computing. Quantum circuits can be simulated classically, e.g., using Monte Carlo sampling techniques applied to quasiprobability repres...
An efficient quantum algorithm for preparation of uniform quantum superposition states
Alok Shukla, P. Vedula·Jun 18, 2023
Quantum state preparation involving a uniform superposition over a non-empty subset of n-qubit computational basis states is an important and challenging step in many quantum computation algorithms and applications. In this work, we address the probl...
Quantum Algorithms for the Shortest Common Superstring and Text Assembling Problems
K. Khadiev, C. Machado, Ze-Wen Chen +1 more·Jun 18, 2023
In this paper, we consider two versions of the Text Assembling problem. We are given a sequence of strings $s^1,\dots,s^n$ of total length $L$ that is a dictionary, and a string $t$ of length $m$ that is a text. The first version of the problem is as...
Security of One-Way Entanglement Purification with Quantum Sampling Against a Restricted Adversary
Cameron Cianci·Jun 18, 2023
Entanglement purification protocols promise to play a critical role in the future of quantum networks by distributing entanglement across noisy channels. However, only the security of two-way purification protocols have been closely studied. To addre...
Encoder Circuit For Surface Code using Measurement-Based Quantum Computing Model
Priyam Srivastava, V. Katyal, Ankur Raina·Jun 17, 2023
Surface codes are one of the most important topological stabilizer codes in the theory of quantum error correction. In this paper, we provide an efficient way to obtain surface codes through Measurement-based quantum computation (MBQC) using cluster ...
Enabling High Performance Debugging for Variational Quantum Algorithms using Compressed Sensing
Tianyi Hao, Kun Liu, Swamit S. Tannu·Jun 17, 2023
Variational quantum algorithms (VQAs) can potentially solve practical problems using contemporary Noisy Intermediate Scale Quantum (NISQ) computers. VQAs find near-optimal solutions in the presence of qubit errors by classically optimizing a loss fun...
Cryogenic reconfigurable logic with superconducting heater cryotron: Enhancing area efficiency and enabling camouflaged processors
Shamiul Alam, Dana S. Rampini, Bakhrom G. Oripov +2 more·Jun 17, 2023
Superconducting electronics are among the most promising alternatives to conventional CMOS technology, thanks to the ultra-fast speed and ultra-high energy efficiency of the superconducting devices. Having a cryogenic control processor is also a cruc...
Continuous-time quantum walks for MAX-CUT are hot
Robert J. Banks, Ehsan Haque, Farah Nazef +21 more·Jun 17, 2023
By exploiting the link between time-independent Hamiltonians and thermalisation, heuristic predictions on the performance of continuous-time quantum walks for MAX-CUT are made. The resulting predictions depend on the number of triangles in the underl...
Qubit entanglement generated by classical light driving an optical cavity
Seongjin Ahn, A. S. Moskalenko, V. Chernyak +1 more·Jun 17, 2023
We study the generation of entanglement between two qubits which communicate through a single cavity mode of quantum light but have no direct interaction. We show that such entanglement can be generated simply by exchanging quanta with a third party,...