Heterodyne spectrometer sensitivity limit for quantum networking
- URL: http://arxiv.org/abs/2201.05192v3
- Date: Mon, 16 May 2022 18:09:14 GMT
- Title: Heterodyne spectrometer sensitivity limit for quantum networking
- Authors: Joseph C. Chapman and Nicholas A. Peters
- Abstract summary: Heterodyne detection-based spectrometers are attractive due to their relatively simple construction and ultra-high resolution.
We demonstrate a proof-of-principle single-mode optical-fiber-based heterodyne spectrometer which has picometer resolution and quantum-limited sensitivity around 1550 nm.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Optical heterodyne detection-based spectrometers are attractive due to their
relatively simple construction and ultra-high resolution. Here we demonstrate a
proof-of-principle single-mode optical-fiber-based heterodyne spectrometer
which has picometer resolution and quantum-limited sensitivity around 1550 nm.
Moreover, we report a generalized quantum limit of detecting broadband
multi-spectral-temporal-mode light using heterodyne detection, which provides a
sensitivity limit on a heterodyne detection-based optical spectrometer. We then
compare this sensitivity limit to several spectrometer types and dim light
sources of interest, such as, spontaneous parametric downconversion, Raman
scattering, and spontaneous four-wave mixing. We calculate the heterodyne
spectrometer is significantly less sensitive than a single-photon detector and
unable to detect these dim light sources, except for the brightest and
narrowest-bandwidth examples.
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