Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Automated quantum circuit generation for computing inverse hash functions
Elena R. Henderson, Jessie M. Henderson, William V. Oxford +1 more·Apr 26, 2024
Several cryptographic systems depend upon the computational difficulty of reversing cryptographic hash functions. Robust hash functions transform inputs to outputs in such a way that the inputs cannot be later retrieved in a reasonable amount of time...
Quantum and classical correlations in shrinking algorithms for optimization
Victor Fischer, Maximilian Passek, Friedrich Wagner +3 more·Apr 26, 2024
Understanding the benefits of quantum computing for solving combinatorial optimization problems (COPs) remains an open research question. In this work, we extend and analyze algorithms that solve COPs by recursively shrinking them. The algorithms lev...
Programmable Photonic Quantum Circuits with Ultrafast Time-Bin Encoding.
Frédéric Bouchard, Kate L. Fenwick, K. Bonsma-Fisher +4 more·Apr 26, 2024
We propose a quantum information processing platform that utilizes the ultrafast time-bin encoding of photons. This approach offers a pathway to scalability by leveraging the inherent phase stability of collinear temporal interferometric networks at ...
Momentum exchange method for quantum Boltzmann methods
Merel A. Schalkers, Matthias Möller·Apr 26, 2024
The past years have seen a surge in quantum algorithms for computational fluid dynamics (CFD). These algorithms have in common that whilst promising a speed-up in the performance of the algorithm, no specific method of measurement has been suggested....
Unconditional correctness of recent quantum algorithms for factoring and computing discrete logarithms
Cédric Pilatte·Apr 25, 2024
In 1994, Shor introduced his famous quantum algorithm to factor integers and compute discrete logarithms in polynomial time. In 2023, Regev proposed a multi-dimensional version of Shor's algorithm that requires far fewer quantum gates. His algorithm ...
Preparing matrix product states via fusion: constraints and extensions
David T. Stephen, Oliver Hart·Apr 25, 2024
In the era of noisy, intermediate-scale quantum (NISQ) devices, the efficient preparation of many-body resource states is a task of paramount importance. In this paper we focus on the deterministic preparation of matrix-product states (MPS) in consta...
Stabilizing quantum simulations of lattice gauge theories by dissipation
Tobias Schmale, H. Weimer·Apr 25, 2024
Simulations of lattice gauge theories on noisy quantum hardware inherently suffer from violations of the gauge symmetry due to coherent and incoherent errors of the underlying physical system that implements the simulation. These gauge violations cau...
Stable Symmetry-Protected Topological Phases in Systems with Heralded Noise.
Sanket Chirame, Fiona J. Burnell, Sarang Gopalakrishnan +1 more·Apr 25, 2024
We present a family of local quantum channels whose steady states exhibit stable mixed-state symmetry-protected topological (SPT) order. Motivated by recent experimental progress on "erasure conversion" techniques that allow one to identify (herald) ...
Optimal depth and a novel approach to variational unitary quantum process tomography
Vladlen Galetsky, Pol Julià Farré, Soham Ghosh +2 more·Apr 25, 2024
In this work, we present two new methods for variational quantum circuit (VQC) process tomography (PT) onto n qubits systems: unitary PT based on VQCs (PT_VQC) and unitary evolution-based variational quantum singular value decomposition (U-VQSVD). Co...
Harnessing Inferior Solutions For Superior Outcomes: Obtaining Robust Solutions From Quantum Algorithms
Pascal Halffmann, Michael Trebing, Steve Lenk·Apr 25, 2024
In the rapidly advancing domain of quantum optimization, the confluence of quantum algorithms such as Quantum Annealing (QA) and the Quantum Approximate Optimization Algorithm (QAOA) with robust optimization methodologies presents a cutting-edge fron...
Quantum-assisted trustworthiness for the Quantum Internet
A. Zaballos, Adrià Mallorquí, Joan Navarro·Apr 25, 2024
Device redundancy is one of the most well-known mechanisms in distributed systems to increase the overall system fault tolerance and, consequently, trustworthiness. Existing algorithms in this regard aim to exchange a significant number of messages a...
Efficient Variational Quantum Linear Solver for Structured Sparse Matrices
Abeynaya Gnanasekaran, Amit Surana·Apr 25, 2024
We develop a novel approach for efficiently applying the variational quantum linear solver (VQLS) in the context of structured sparse matri-ces. Such matrices frequently arise during numerical solution of partial differential equations which are ubiq...
Compiler for Distributed Quantum Computing: A Reinforcement Learning Approach
Panagiotis Promponas, Akrit Mudvari, Luca Della Chiesa +3 more·Apr 25, 2024
The practical realization of quantum programs that require large-scale qubit systems is hindered by current technological limitations. Distributed Quantum Computing (DQC) presents a viable path to scalability by interconnecting multiple Quantum Proce...
High-Coherence Kerr-Cat Qubit in 2D Architecture
Ahmed Hajr, Bingcheng Qing, Ke Wang +15 more·Apr 25, 2024
The Kerr-cat qubit is a bosonic qubit in which multiphoton Schrödinger cat states are stabilized by applying a two-photon drive to an oscillator with a Kerr nonlinearity. The suppressed bit-flip rate with increasing cat size makes this qubit a promis...
High-fidelity and Fault-tolerant Teleportation of a Logical Qubit using Transversal Gates and Lattice Surgery on a Trapped-ion Quantum Computer
C. Ryan-Anderson, N. Brown, C. Baldwin +21 more·Apr 25, 2024
Quantum state teleportation is commonly used in designs for large-scale fault-tolerant quantum computers. Using Quantinuum's H2 trapped-ion quantum processor, we implement the first demonstration of a fault-tolerant state teleportation circuit for a ...
QREChem: Quantum Resource Estimation Software for Chemistry Applications
Matthew Otten, Byeol Kang, Dmitry Fedorov +4 more·Apr 25, 2024
As quantum hardware continues to improve, more and more application scientists have entered the field of quantum computing. However, even with the rapid improvements in the last few years, quantum devices, especially for quantum chemistry application...
Hierarchically discriminating Haar-randomness in quantum states from a black-box device
Xavier Bonet-Monroig, Hao Wang, Adrián Pérez-Salinas·Apr 24, 2024
The concept of randomness in quantum computing has been central to construct benchmarking tools, cryptographic protocols, as well as a proof of beyond classical computation. Discerning whether quantum states (or unitaries) are randomly distributed is...
Entanglement-Based Artificial Topology: Neighboring Remote Network Nodes
Si-Yi Chen, Jessica Illiano, Angela Sara Cacciapuoti +1 more·Apr 24, 2024
Entanglement is unanimously recognized as the key communication resource of the Quantum Internet. Yet, the possibility of implementing novel network functionalities by exploiting the marvels of entanglement has been poorly investigated so far, by mai...
A robust approach for time-bin encoded photonic quantum information protocols
Simon J. U. White, Emanuele Polino, Farzad Ghafari +6 more·Apr 24, 2024
Quantum states encoded in the time-bin degree of freedom of photons represent a fundamental resource for quantum information protocols. Traditional methods for generating and measuring time-bin encoded quantum states face severe challenges due to opt...
The genuinely multipartite nonlocality of graph states is model-dependent
Xavier Coiteux-Roy, Owidiusz Makuta, Fionnuala Curran +2 more·Apr 24, 2024
Bell's theorem proves that some quantum state correlations can only be explained by bipartite non-classical resources. The notion of genuinely multipartite nonlocality (GMNL) was later introduced to conceptualize the fact that nonclassical resources ...