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Density Matrices of Pulsed Quantum Light
Abstract
Pulsed light is represented by density matrices whose correlation functions have different properties of stationarity and coherence. We show that these density matrices yield equivalent measurement results after accounting for finite detection times. This in turn reveals a physical meaning to the length of a quantization cavity and explains the origin of the physical spectrum for pulsed light. By generalizing the density matrices for pulsed Gaussian states of light, we can describe pulsed light of varying statistics in the same basis and relate the photocount rate to the pulse spectrum.
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BibTeX
@misc{veen2026density,
title = {{Density Matrices of Pulsed Quantum Light}},
author = {Joscelyn van der Veen and Daniel F. V. James},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.38009},
eprint = {2609.38009},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.38009},
}
RIS
TY - UNPB
TI - Density Matrices of Pulsed Quantum Light
AU - Joscelyn van der Veen
AU - Daniel F. V. James
PY - 2026
DA - 2026/09/29
PB - arXiv
DO - 10.48550/arxiv.2609.38009
UR - https://arxiv.org/abs/2609.38009
AB - Pulsed light is represented by density matrices whose correlation functions have different properties of stationarity and coherence. We show that these density matrices yield equivalent measurement results after accounting for finite detection times. This in turn reveals a physical meaning to the length of a quantization cavity and explains the origin of the physical spectrum for pulsed light. By generalizing the density matrices for pulsed Gaussian states of light, we can describe pulsed light of varying statistics in the same basis and relate the photocount rate to the pulse spectrum.
ER -