Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Midcircuit Operations Using the omg Architecture in Neutral Atom Arrays
Joanna W. Lis, Aruku Senoo, W. McGrew +3 more·May 30, 2023
We implement mid-circuit operations in a 48-site array of neutral atoms, enabled by new methods for control of the $\textit{omg}$ (optical-metastable-ground state qubit) architecture present in ${}^{171}$Yb. We demonstrate laser-based control of grou...
Scalable Generation and Detection of on-Demand W States in Nanophotonic Circuits
Jun Gao, Leonardo Santos, Govind Krishna +8 more·May 24, 2023
Quantum physics phenomena, entanglement and coherence, are crucial for quantum information protocols, but understanding these in systems with more than two parts is challenging due to increasing complexity. The W state, a multipartite entangled state...
Errors in heralded circuits for linear optical entanglement generation
Reece D. Shaw, Alex E. Jones, Patrick Yard +1 more·May 15, 2023
The heralded generation of entangled states underpins many photonic quantum technologies. As quantum error correction thresholds are determined by underlying physical noise mechanisms, a detailed and faithful characterization of resource states is re...
Erasure conversion in a high-fidelity Rydberg quantum simulator
P. Scholl, Adam L. Shaw, R. Tsai +3 more·May 5, 2023
Minimizing and understanding errors is critical for quantum science, both in noisy intermediate scale quantum (NISQ) devices^ 1 and for the quest towards fault-tolerant quantum computation^ 2 , 3 . Rydberg arrays have emerged as a prominent platform ...
Collateral Coupling between Superconducting Resonators: Fast High-Fidelity Generation of Qudit-Qudit Entanglement
Pedro Rosario, Alan C. Santos, C. Villas-Bôas +1 more·May 5, 2023
Superconducting circuits are highly controllable platforms to manipulate quantum states, which make them particularly promising for quantum information processing. We here show how the existence of a distance-independent interaction between microwave...
Parallelization of frequency domain quantum gates: manipulation and distribution of frequency-entangled photon pairs generated by a 21 GHz silicon microresonator
Antoine Henry, D. Fioretto, Lorenzo M. Procopio +8 more·May 5, 2023
Abstract. Harnessing the frequency dimension in integrated photonics offers key advantages in terms of scalability, noise resilience, parallelization, and compatibility with telecom multiplexing techniques. Integrated ring resonators have been used t...
Classical chaos in quantum computers
Simon-Dominik Börner, C. Berke, D. DiVincenzo +2 more·Apr 27, 2023
The development of quantum computing hardware is facing the challenge that current-day quantum processors, comprising 50–100 qubits, already operate outside the range of quantum simulation on classical computers. In this paper we demonstrate that the...
Avoiding barren plateaus in the variational determination of geometric entanglement
L. Zambrano, A. Muñoz-Moller, M. Muñoz +2 more·Apr 26, 2023
The barren plateau (BP) phenomenon is one of the main obstacles to implementing variational quantum algorithms in the current generation of quantum processors. Here, we introduce a method capable of avoiding the BP phenomenon in the variational deter...
An Analysis of the Completion Time of the BB84 Protocol
Sounak Kar, J. L. Boudec·Apr 20, 2023
The BB84 QKD protocol is based on the idea that the sender and the receiver can reconcile a certain fraction of the teleported qubits to detect eavesdropping or noise and decode the rest to use as a private key. Under the present hardware infrastruct...
Phase transition in magic with random quantum circuits
Pradeep Niroula, C. White, Qingfeng Wang +5 more·Apr 20, 2023
Magic is a property of quantum states that enables universal fault-tolerant quantum computing using simple sets of gate operations. Understanding the mechanisms by which magic is created or destroyed is, therefore, a crucial step towards efficient an...
On-Chip Generation and Collectively Coherent Control of the Superposition of the Whole Family of Dicke States.
Leizhen Chen, Liangliang Lu, Lijun Xia +3 more·Apr 7, 2023
Integrated quantum photonics has recently emerged as a powerful platform for generating, manipulating, and detecting entangled photons. Multipartite entangled states lie at the heart of the quantum physics and are the key enabling resources for scala...
Establishing Shared Secret Keys on Quantum Line Networks: Protocol and Security
Mina Doosti, L. Hanouz, Anne Marin +2 more·Apr 4, 2023
We show the security of multi-user key establishment on a single line of quantum communication. More precisely, we consider a quantum communication architecture where the qubit generation and measurement happen at the two ends of the line, whilst int...
Non-classical microwave–optical photon pair generation with a chip-scale transducer
S. Meesala, Steven Wood, D. Lake +6 more·Mar 30, 2023
A transducer that generates microwave–optical photon pairs is demonstrated. This could provide an interface between optical communication networks and superconducting quantum devices that operate at microwave frequencies. Modern computing and communi...
Trainable Variational Quantum-Multiblock ADMM Algorithm for Generation Scheduling
Reza Mahroo, A. Kargarian·Mar 28, 2023
The advent of quantum computing can potentially revolutionize how complex problems are solved. This paper proposes a two-loop quantum-classical solution algorithm for generation scheduling by infusing quantum computing, machine learning, and distribu...
All-photonic Gottesman-Kitaev-Preskill–qubit repeater using analog-information-assisted multiplexed entanglement ranking
F. Rozpędek, K. Seshadreesan, P. Polakos +2 more·Mar 27, 2023
Long distance quantum communication will require the use of quantum repeaters to overcome the exponential attenuation of signal with distance. One class of such repeaters utilizes quantum error correction to overcome losses in the communication chann...
Scalable multi-chip quantum architectures enabled by cryogenic hybrid wireless/quantum-coherent network-in-package
Eduard Alarc'on, S. Abadal, F. Sebastiano +9 more·Mar 24, 2023
The grand challenge of scaling up quantum computers requires a full-stack architectural standpoint. In this position paper, we will present the vision of a new generation of scalable quantum computing architectures featuring distributed quantum cores...
Cross-platform comparison of arbitrary quantum processes
Congcong Zheng, Xutao Yu, Kun Wang·Mar 24, 2023
In this work, we present a protocol for comparing the performance of arbitrary quantum processes executed on spatially or temporally disparate quantum platforms using Local Operations and Classical Communication (LOCC). The protocol involves sampling...
Quantum Monte Carlo simulations for financial risk analytics: scenario generation for equity, rate, and credit risk factors
T. Matsakos, Stuart A. Nield·Mar 16, 2023
Monte Carlo (MC) simulations are widely used in financial risk management, from estimating value-at-risk (VaR) to pricing over-the-counter derivatives. However, they come at a significant computational cost due to the number of scenarios required for...
Fermionic quantum processing with programmable neutral atom arrays
Daniel Gonz'alez-Cuadra, D. Bluvstein, M. Kalinowski +10 more·Mar 13, 2023
Significance Neutral atoms trapped in tweezer arrays have recently emerged as powerful quantum simulation platforms, with recent experiments targeting quantum spin models. In this work, we envision the next generation of programmable atomic quantum s...
Evolutionary quantum feature selection
Antonella Albino, O. Pires, Mauro Q. Nooblath Neto +1 more·Mar 13, 2023
Effective feature selection is essential for enhancing the performance of artificial intelligence models. It involves identifying feature combinations that optimize a given metric, but this is a challenging task due to the problem's exponential time ...