Radiative processes on a quantum computer

Radiative processes, where a photon/neutrino is emitted as a result of a collision or decay of a particle, play a central role in atomic, nuclear, and particle physics. Their rate is determined by certain off-diagonal matrix elements between different initial and final states. We propose a method to...

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Bibliographic Details
Published in:	Physical review. C Vol. 111; no. 3
Main Authors:	Bedaque, Paulo F., Khadka, Ratna, Rupak, Gautam, Yusf, Muhammad
Format:	Journal Article
Language:	English
Published:	United States American Physical Society (APS) 07.03.2025
Subjects:	Few-body systems Nuclear reactions Nuclear structure & decays Quantum algorithms & computation Quantum simulation
ISSN:	2469-9985, 2469-9993
Online Access:	Get full text
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Summary:	Radiative processes, where a photon/neutrino is emitted as a result of a collision or decay of a particle, play a central role in atomic, nuclear, and particle physics. Their rate is determined by certain off-diagonal matrix elements between different initial and final states. We propose a method to compute them using quantum computers. It relies on a single extra qubit that, in a certain sense, represents the photon/neutrino. The generic formula relating this matrix element to the amplitude and frequency of oscillations of the extra qubit is derived for the near-resonance case. Furthermore, we demonstrate the feasibility of the method by using it in actual quantum computations and simulations of simple systems.
Bibliography:	USDOE SC0021195; SC0021143; FG02-93ER40762; PHY-1913620; PHY-2209184 National Science Foundation (NSF)
ISSN:	2469-9985 2469-9993
DOI:	10.1103/PhysRevC.111.034604