Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Mitigating errors in logical qubits
Samuel C. Smith, Benjamin J. Brown, Stephen D. Bartlett·May 6, 2024
Quantum error correcting codes can enable large quantum computations provided physical error rates are sufficiently low. We combine post-selection with surface code error correction through the use of exclusive decoders, which abort on decoding insta...
Early Fault-Tolerant Quantum Algorithms in Practice: Application to Ground-State Energy Estimation
Oriel Kiss, Utkarsh Azad, Borja Requena +3 more·May 6, 2024
We investigate the feasibility of early fault-tolerant quantum algorithms focusing on ground-state energy estimation problems. In particular, we examine the computation of the cumulative distribution function (CDF) of the spectral measure of a Hamilt...
Optimal box contraction for solving linear systems via simulated and quantum annealing
S. Suresh, Krishnan Suresh·May 5, 2024
Solving linear systems of equations is an important problem in engineering. Many quantum algorithms, such as the Harrow–Hassidim–Lloyd algorithm and the box algorithm, have been proposed for solving such systems. The focus of this article is on impro...
Halfway Escape Optimization: A Quantum-Inspired Solution for General Optimization Problems
Jiawen Li, Anwar P. P. Abdul Majeed, Pascal Lefèvre·May 5, 2024
This paper first proposes the Halfway Escape Optimization (HEO) algorithm, a quantum-inspired metaheuristic designed to address general optimization problems. The HEO mimics the effects between quantum such as tunneling, entanglement. After the intro...
Logical Error Rates for a [[4,2,2]]-Encoded Variational Quantum Eigensolver Ansatz
Meenambika Gowrishankar, Daniel Claudino, Jerimiah Wright +1 more·May 5, 2024
Quantum computing offers a potential for algorithmic speedups for applications, such as large-scale simulations in chemistry and physics. However, these speedups must yield results that are sufficiently accurate to predict realistic outcomes of exper...
A Greedy Quantum Route-Generation Algorithm
Jordan Makansi, David E. Bernal Neira·May 5, 2024
Routing and scheduling problems with time windows have long been important optimization problems for logistics and planning. Many classical heuristics and exact methods exist for such problems. However, there are no satisfactory methods for generatin...
Validating large-scale quantum machine learning: efficient simulation of quantum support vector machines using tensor networks
Kuan-Cheng Chen, Tai-Yue Li, Yun-Yuan Wang +6 more·May 4, 2024
We present an efficient tensor-network-based approach for simulating large-scale quantum circuits exemplified by quantum support vector machines (QSVMs). Experimentally, leveraging the cuTensorNet library on multiple GPUs, our method effectively redu...
Mitigating photon loss in linear optical quantum circuits
James Mills, Rawad Mezher·May 3, 2024
Photon loss rates set an effective upper limit on the size of computations that can be run on current linear optical quantum devices. We present a family of techniques designed to mitigate the effects of photon loss on both output probabilities and e...
On computational complexity and average-case hardness of shallow-depth boson sampling
Byeongseon Go, Changhun Oh, Hyunseok Jeong·May 3, 2024
Boson sampling, a computational task believed to be classically hard to simulate, is expected to hold promise for demonstrating quantum computational advantage using near-term quantum devices. However, noise in experimental implementations poses a si...
Computational Electromagnetics Meets Spin Qubits: Controlling Noise Effects in Quantum Sensing and Computing
Wenbo Sun, S. Bharadwaj, Runwei Zhou +2 more·May 3, 2024
Solid-state spin qubits have emerged as promising platforms for quantum information. Despite extensive efforts in controlling noise in spin qubit quantum applications, one important but less controlled noise source is near-field electromagnetic fluct...
Characterizing randomness in parameterized quantum circuits through expressibility and average entanglement
Guilherme Ilário Correr, Ivan Medina, P. C. Azado +2 more·May 3, 2024
While scalable error correction schemes and fault tolerant quantum computing seem not to be universally accessible in the near sight, the efforts of many researchers have been directed to the exploration of the contemporary available quantum hardware...
Strategies for Enhancing Spin-Shuttling Fidelities in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mi>Si</mml:mi></mml:math> / <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mi>Si</mml:mi></mml:mat
Merritt P. Losert, Max Oberländer, J. Teske +5 more·May 3, 2024
Coherent coupling between distant qubits is needed for many scalable quantum computing schemes. In quantum dot systems, one proposal for long-distance coupling is to coherently transfer electron spins across a chip in a moving dot potential. Here, we...
Transformer models for quantum gate set tomography
King Yiu Yu, Aritra Sarkar, M. Rimbach-Russ +2 more·May 3, 2024
Quantum computation represents a promising frontier in the domain of high-performance computing, blending quantum information theory with practical applications to overcome the limitations of classical computation. This study investigates the challen...
Strategies for implementing quantum error correction in molecular rotation
Brandon J. Furey, Zhenlin Wu, Mariano Isaza-Monsalve +4 more·May 3, 2024
The rotation of trapped molecules offers a promising platform for quantum technologies and quantum information processing. In parallel, quantum error correction codes that can protect quantum information encoded in rotational states of a single molec...
Evaluation of Advanced Encryption Standard Algorithms for Image Encryption
Abel C. H. Chen·May 3, 2024
With the maturation of quantum computing, traditional cryptography is gradually facing threats. While the Grover algorithm can accelerate search speeds, current observations suggest that symmetric cryptography (such as Advanced Encryption Standard (A...
Error-mitigated photonic quantum circuit Born machine
A. Salavrakos, Tigran Sedrakyan, James Mills +2 more·May 3, 2024
In this Letter, we study quantum circuit Born machines (QCBMs) in the context of photonic quantum computing. QCBMs are a popular choice of quantum generative machine learning models, and we present a QCBM designed for linear optics. We show that a re...
Response of strongly coupled fermions on classical and quantum computers
J. Novak, Manqoba Q. Hlatshwayo, E. Litvinova·May 3, 2024
Studying the response of quantum systems is essential for gaining deeper insights into the fundamental nature of matter and its behavior in diverse physical contexts. Computation of nuclear response is critical for many applications, but its spectros...
Optimal Toffoli-Depth Quantum Adder
Siyi Wang, Ankit Mondal, Anupam Chattopadhyay·May 3, 2024
Efficient quantum arithmetic circuits are commonly found in numerous quantum algorithms of practical significance. To date, the logarithmic-depth quantum adders include a constant coefficient k ≥ 2 while achieving the Toffoli-Depth of k log n + 𝒪(1)...
Vibrational Entanglement through the Lens of Quantum Information Measures
Nina Glaser, Alberto Baiardi, Annina Z. Lieberherr +1 more·May 3, 2024
We introduce a quantum information analysis of vibrational wave functions to understand complex vibrational spectra of molecules with strong anharmonic couplings and vibrational resonances. For this purpose, we define one- and two-modal entropies to ...
Transforming graph states via Bell state measurements
M. C. Löbl, Love A. Pettersson, Stefano Paesani +1 more·May 3, 2024
Graph states are key resources for measurement-based quantum computing, which is particularly promising for photonic systems. Fusions are probabilistic Bell state measurements, measuring pairs of parity operators of two qubits. Fusions can be used to...