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Live trends in quantum computing research, updated daily from arXiv.
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Digital Quantum Simulation for Spectroscopy of Schwinger Model
Dongwook Ghim, Masazumi Honda·Apr 23, 2024
This note discusses a method for computing the energy spectra of quantum field theory utilizing digital quantum simulation. A quantum algorithm, called coherent imaging spectroscopy, quenches the vacuum with a time-oscillating perturbation and then r...
Pricing of European Calls with the Quantum Fourier Transform
Tom Ewen·Apr 22, 2024
The accurate valuation of financial derivatives plays a pivotal role in the finance industry. Although closed formulas for pricing are available for certain models and option types, exemplified by the European Call and Put options in the Black-Schole...
Efficient molecular conformation generation with quantum-inspired algorithm
Yunting Li, Xiaopeng Cui, Zhaoping Xiong +7 more·Apr 22, 2024
Conformation generation, also known as molecular unfolding (MU), is a crucial step in structure-based drug design, remaining a challenging combinatorial optimization problem. Quantum annealing (QA) has shown great potential for solving certain combin...
QuantumAnnealing: A Julia Package for Simulating Dynamics of Transverse Field Ising Models
Zachary Morrell, Marc Vuffray, Sidhant Misra +1 more·Apr 22, 2024
Analog Quantum Computers are promising tools for improving performance on applications such as modeling behavior of quantum materials, providing fast heuristic solutions to optimization problems, and simulating quantum systems. Due to the challenges ...
PristiQ: A Co-Design Framework for Preserving Data Security of Quantum Learning in the Cloud
Zhepeng Wang, Yi Sheng, Nirajan Koirala +4 more·Apr 20, 2024
Benefiting from cloud computing, today's early-stage quantum computers can be remotely accessed via the cloud services, known as Quantum-as-a-Service (QaaS). However, it poses a high risk of data leakage in quantum machine learning (QML). To run a QM...
Demonstration of quantum projective simulation on a single-photon-based quantum computer
Giacomo Franceschetto, Arno Ricou·Apr 19, 2024
Variational quantum algorithms show potential in effectively operating on noisy intermediate-scale quantum devices. A variational approach to reinforcement learning has been recently proposed, incorporating linear-optical interferometers and a classi...
High-rate quantum LDPC codes for long-range-connected neutral atom registers
Laura Pecorari, Sven Jandura, G. Brennen +1 more·Apr 19, 2024
High-rate quantum error correcting (QEC) codes with moderate overheads in qubit number and control complexity are highly desirable for achieving fault-tolerant quantum computing. Recently, quantum error correction has experienced significant progress...
Exploring qubit-ADAPT-VQE for materials discovery in direct air capture
M. A. Barroca, Rodrigo Neumann Barros Ferreira, Mathias B. Steiner·Apr 19, 2024
Direct air capture (DAC) of carbon dioxide is a promising method for mitigating climate change. Solid sorbents, such as metal–organic frameworks, are currently being tested for DAC application. However, their potential for deployment at scale has not...
Erasure-Tolerance Scheme for the Surface Codes on Neutral Atom Quantum Computers
Fumiyoshi Kobayashi, Shota Nagayama·Apr 19, 2024
Neutral atom arrays manipulated with optical tweezers are promising candidates for fault-tolerant quantum computers due to their advantageous properties, such as scalability, long coherence times, and optical accessibility for communication. A signif...
TANQ-Sim: Tensorcore Accelerated Noisy Quantum System Simulation via QIR on Perlmutter HPC
Ang Li, Chenxu Liu, S. Stein +7 more·Apr 19, 2024
Although there have been remarkable advances in quantum computing (QC), it remains crucial to simulate quantum programs using classical large-scale parallel computing systems to validate quantum algorithms, comprehend the impact of noise, and develop...
Quantum trajectory entanglement in various unravelings of Markovian dynamics
T. Vovk, Hannes Pichler·Apr 18, 2024
The cost of classical simulations of quantum many-body dynamics is often determined by the amount of entanglement in the system. In this paper, we study entanglement in stochastic quantum trajectory approaches that solve master equations describing o...
Tailoring Fault-Tolerance to Quantum Algorithms
Zhuangzhuang Chen, Narayanan Rengaswamy·Apr 18, 2024
The standard approach to universal fault-tolerant quantum computing is to develop a general purpose quantum error correction mechanism that can implement a universal set of logical gates fault-tolerantly. Given such a scheme, any quantum algorithm ca...
Scalable Spin Squeezing from Critical Slowing Down in Short-Range Interacting Systems.
T. Roscilde, Filippo Caleca, A. Angelone +1 more·Apr 18, 2024
Long-range spin-spin interactions are known to generate nonequilibrium dynamics that can squeeze the collective spin of a quantum spin ensemble in a scalable manner, leading to states whose metrologically useful entanglement grows with system size. H...
Fermionic quantum simulation on Andreev bound state superlattices
Peter D. Johannsen, C. Schrade·Apr 18, 2024
Arrays of superconducting qubits and cavities offer a promising route for realizing artificial materials. However, many analog simulations on superconducting circuit hardware have focused on bosonic systems. Fermionic simulations, in contrast, have l...
Stabilizer entropies are monotones for magic-state resource theory
Lorenzo Leone, Lennart Bittel·Apr 17, 2024
Magic-state resource theory is a powerful tool with applications in quantum error correction, many-body physics, and classical simulation of quantum dynamics. Despite its broad scope, finding tractable resource monotones has been challenging. Stabili...
A quantum eigenvalue solver based on tensor networks
Oskar Leimkuhler, K. Birgitta Whaley·Apr 16, 2024
Electronic ground states are of central importance in chemical simulations, but have remained beyond the reach of efficient classical algorithms except in cases of weak electron correlation or one-dimensional spatial geometry. We introduce a hybrid q...
Quantum Simulation of Open Quantum Dynamics via Non-Markovian Quantum State Diffusion
Yukai Guo, Xing Gao·Apr 16, 2024
Quantum simulation of non-Markovian open quantum dynamics is essential but challenging for standard quantum computers due to their non-Hermitian nature, leading to non-unitary evolution, and the limitations of available quantum resources. Here we int...
Hilbert Space Delocalization under Random Unitary Circuits
X. Turkeshi, P. Sierant·Apr 16, 2024
The unitary dynamics of a quantum system initialized in a selected basis state yield, generically, a state that is a superposition of all the basis states. This process, associated with the quantum information scrambling and intimately tied to the re...
Spectroscopic Measurements and Models of Energy Deposition in the Substrate of Quantum Circuits by Natural Ionizing Radiation
J. W. Fowler, P. Szypryt, R. Bunker +16 more·Apr 16, 2024
Naturally occurring background radiation is a potential source of correlated decoherence events in superconducting qubits that will challenge error-correction schemes. In order to characterize the radiation environment in an unshielded laboratory rep...
Simulating Electronic Structure on Bosonic Quantum Computers.
Rishab Dutta, Nam P Vu, Chuzhi Xu +7 more·Apr 16, 2024
Quantum harmonic oscillators, or qumodes, provide a promising and versatile framework for quantum computing. Unlike qubits, which are limited to two discrete levels, qumodes have an infinite-dimensional Hilbert space, making them well-suited for a wi...