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Quantum Interference between Fundamentally Different Processes Is Enabled by Shaped Input Wavefunctions.

Quantum Interference between Fundamentally Different Processes Is Enabled by Shaped Input Wavefunctions.

Authors :
Lim, Jeremy
Kumar, Suraj
Ang, Yee Sin
Ang, Lay Kee
Wong, Liang Jie
Source :
Advanced Science. 4/5/2023, Vol. 10 Issue 10, p1-10. 10p.
Publication Year :
2023

Abstract

This work presents a general framework for quantum interference between processes that can involve different fundamental particles or quasi‐particles. This framework shows that shaping input wavefunctions is a versatile and powerful tool for producing and controlling quantum interference between distinguishable pathways, beyond previously explored quantum interference between indistinguishable pathways. Two examples of quantum interference enabled by shaping in interactions between free electrons, bound electrons, and photons are presented: i) the vanishing of the zero‐loss peak by destructive quantum interference when a shaped electron wavepacket couples to light, under conditions where the electron's zero‐loss peak otherwise dominates; ii) quantum interference between free electron and atomic (bound electron) spontaneous emission processes, which can be significant even when the free electron and atom are far apart, breaking the common notion that a free electron and an atom must be close by to significantly affect each other's processes. Conclusions show that emerging quantum wave‐shaping techniques unlock the door to greater versatility in light‐matter interactions and other quantum processes in general. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
21983844
Volume :
10
Issue :
10
Database :
Academic Search Index
Journal :
Advanced Science
Publication Type :
Academic Journal
Accession number :
162917243
Full Text :
https://doi.org/10.1002/advs.202205750