Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Coherent detection of discrete variable quantum key distribution using homodyne technique
Muhammad Kamran, Tahir Malik, Ayesha Jamal +2 more·Feb 20, 2024
In discrete variable quantum key distribution (DV-QKD), the homodyne detection method is frequently employed for its simplicity in use, effectiveness in terms of error correction, and suitability with contemporary optical communication systems. Being...
Theoretical Approximation Ratios for Warm-Started QAOA on 3-Regular Max-Cut Instances at Depth $p=1$
Reuben Tate, S. Eidenbenz·Feb 20, 2024
We generalize Farhi et al.'s 0.6924-approximation result technique of the Max-Cut Quantum Approximate Optimization Algorithm (QAOA) on 3-regular graphs to obtain provable lower bounds on the approximation ratio for warm-started QAOA. Given an initial...
Near-Optimal Quantum Algorithm for Minimizing the Maximal Loss
Hao Wang, Chenyi Zhang, Tongyang Li·Feb 20, 2024
The problem of minimizing the maximum of $N$ convex, Lipschitz functions plays significant roles in optimization and machine learning. It has a series of results, with the most recent one requiring $O(N\epsilon^{-2/3} + \epsilon^{-8/3})$ queries to a...
Virtual reality for understanding artificial-intelligence-driven scientific discovery with an application in quantum optics
Philipp Schmidt, Sören Arlt, Carlos Ruiz-Gonzalez +3 more·Feb 20, 2024
Generative Artificial Intelligence (AI) models can propose solutions to scientific problems beyond human capability. To truly make conceptual contributions, researchers need to be capable of understanding the AI-generated structures and extracting th...
KetGPT - Dataset Augmentation of Quantum Circuits using Transformers
Boran Apak, Medina Bandic, Aritra Sarkar +1 more·Feb 20, 2024
Quantum algorithms, represented as quantum circuits, can be used as benchmarks for assessing the performance of quantum systems. Existing datasets, widely utilized in the field, suffer from limitations in size and versatility, leading researchers to ...
Quantum Computation of Conical Intersections on a Programmable Superconducting Quantum Processor.
Shoukuan Zhao, Diandong Tang, Xiaoxiao Xiao +7 more·Feb 20, 2024
Conical intersections (CIs) are pivotal in many photochemical processes. Traditional quantum chemistry methods, such as the state-average multiconfigurational methods, face computational hurdles in solving the electronic Schrödinger equation within t...
Dynamics of symmetry-protected topological matter on a quantum computer
Miguel Mercado, Kyle Y. Chen, P. Darekar +3 more·Feb 20, 2024
Control of topological edge modes is desirable for encoding quantum information resiliently against external noise. Their implementation on quantum hardware, however, remains a long-standing problem due to current limitations of circuit depth and noi...
Towards Early Fault Tolerance on a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mn>2</mml:mn><mml:mo>×</mml:mo><mml:mi>N</mml:mi></mml:math> Array of Qubits Equipped with Shuttling
A. Siegel, Armands Strikis, M. Fogarty·Feb 19, 2024
It is well understood that a two-dimensional grid of locally interacting qubits is a promising platform for achieving fault-tolerant quantum computing. However in the near future, it may prove less challenging to develop lower-dimensional structures....
Utilizing Resource Estimation for the Development of Quantum Computing Applications
Nils Quetschlich, Mathias Soeken, Prakash Murali +1 more·Feb 19, 2024
Quantum computing has made considerable progress in recent years in both software and hardware. But to unlock the power of quantum computers in solving problems that cannot be efficiently solved classically, quantum computing at scale is necessary. U...
All You Need is pi: Quantum Computing with Hermitian Gates
Ben Zindorf, Sougato Bose·Feb 19, 2024
Universal gate sets for quantum computation, when single and two qubit operations are accessible, include both Hermitian and non-Hermitian gates. Here we utilize the fact that any single-qubit operator may be implemented as two Hermitian gates, and...
Simulator Demonstration of Large Scale Variational Quantum Algorithm on HPC Cluster
Mikio Morita, Yoshinori Tomita, Junpei Koyama +1 more·Feb 19, 2024
Advances in quantum simulator technology are increasingly required because research on quantum algorithms is becoming more sophisticated and complex. State vector simulation utilizes CPU and memory resources in computing nodes exponentially with resp...
Exponentially Improved Dispersive Qubit Readout with Squeezed Light.
Wei Qin, A. Miranowicz, Franco Nori·Feb 19, 2024
It has been a long-standing goal to improve dispersive qubit readout with squeezed light. However, injected external squeezing (IES) cannot enable a practically interesting increase in the signal-to-noise ratio (SNR), and simultaneously, the increase...
The construction of multiqubit unextendible product bases
Caohan Cheng, Lin Chen·Feb 19, 2024
The unextendible orthogonal matrices (UPBs) can be used for various problems in quantum information. We provide an algorithm to check if two UPBs are non-equivalent to each other. We give a method to construct UPBs and we apply this method to find al...
Exact Ansatz of Fermion-Boson Systems for a Quantum Device.
Samuel Warren, Yuchen Wang, C. L. Benavides-Riveros +1 more·Feb 19, 2024
We present an exact Ansatz for the eigenstate problem of mixed fermion-boson systems that can be implemented on quantum devices. Based on a generalization of the electronic contracted Schrödinger equation (CSE), our approach guides a trial wave funct...
A joint optimization approach of parameterized quantum circuits with a tensor network
Clara Ferreira Cores, Kaur Kristjuhan, M. Jones·Feb 19, 2024
Despite the advantage quantum computers are expected to deliver when performing simulations compared to their classical counterparts, the current noisy intermediate-scale quantum (NISQ) devices remain limited in their capabilities. The training of pa...
Unconditional quantum magic advantage in shallow circuit computation
Xingjian Zhang, Zhaokai Pan, Guoding Liu·Feb 19, 2024
Quantum theory promises computational speed-ups over classical approaches. The celebrated Gottesman-Knill Theorem implies that the full power of quantum computation resides in the specific resource of “magic” states—the secret sauce to establish univ...
Orbital-Rotated Fermi-Hubbard Model as a Benchmarking Problem for Quantum Chemistry with the Exact Solution
Ryota Kojima, Masahiko Kamoshita, Keita Kanno·Feb 19, 2024
Quantum chemistry is a key target for quantum computing, but benchmarking quantum algorithms for large molecular systems remains challenging due to the lack of exactly solvable yet structurally realistic models. In particular, molecular Hamiltonians ...
Recent Extensions of the ZKCM Library for Parallel and Accurate MPS Simulation of Quantum Circuits
A. Saitoh·Feb 19, 2024
A C++ library ZKCM and its extension library ZKCM_QC have been developed since 2011 for multiple-precision matrix computation and accurate matrix-product-state (MPS) quantum circuit simulation, respectively. In this report, a recent progress in the e...
Quantum image denoising with machine learning: a novel approach to improve quantum image processing quality and reliability
Yifan Zhou, Yew Kee Wong, Yan Shing Liang·Feb 18, 2024
Quantum Image Processing (QIP) is a field that aims to utilize the benefits of quantum computing for manipulating and analyzing images. However, QIP faces two challenges: the limitation of qubits and the presence of noise in a quantum machine. In thi...
Fast-forwarding molecular ground state preparation with optimal control on analog quantum simulators.
D. Castaldo, Marta Rosa, S. Corni·Feb 18, 2024
We show that optimal control of the electron dynamics is able to prepare molecular ground states, within chemical accuracy, with evolution times approaching the bounds imposed by quantum mechanics. We propose a specific parameterization of the molecu...