Indistinguishability of photonic qubits emitted from trapped $^{40}$Ca$^+$ ions via pulsed excitation
quant-ph2026-05v1license
Abstract
We investigate the indistinguishability of Raman photons generated from two trapped Ca ions using few-nanosecond excitation pulses. We elucidate how spontaneous scattering back to the initial state affects Hong-Ou-Mandel interference. We identify the mean number of back-decays as a measurable single-emitter quantity that correlates with achievable interference visibility of photons from two identical emitters.
Comments: 11 pages, 11 figures
Cite
@article{arxiv.2605.29825,
title = {Indistinguishability of photonic qubits emitted from trapped $^{40}$Ca$^+$ ions via pulsed excitation},
author = {Pascal Baumgart and Max Bergerhoff and Jonas Meiers and Stephan Kucera and Jürgen Eschner},
journal= {arXiv preprint arXiv:2605.29825},
year = {2026}
}