Application of single photon counter module in weak signal detection for RF chip scanning using a quantum near field probe
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2023-06-22 |
| Journal | Microwave and Optical Technology Letters |
| Authors | Lin-Yan Yu, Ruixin Bai, Xiaohan Yin, Jinfeng Wang, Chengkun Wang |
| Institutions | Nanjing University of Posts and Telecommunications |
Abstract
Section titled âAbstractâAbstract Diamond based quantum sensing for onâchip electromagnetic field imaging is an emerging field. While smaller diamond probes offer higher spatial resolution, their lower fluorescence intensity poses a challenge for the traditional Avalanche Photo Diode. In this work, we propose a tapered fiber diamond probe containing Nitrogenâvacancy center and utilize a single photon counter module as the detector. A time domain differential pulse sequence is introduced to suppress noise caused by laser intensity fluctuation. By analyzing the relationship between the signalâtoânoise ratio (SNR) and parameters of differential pulse sequence, we derived the formula of SNR and the basic cycle (), and obtained the optimal SNR in the same measurement time through tradeâoff between two different kinds of noise. The technique was applied to a waveguide microstrip filter chip, accurately imaging the current density distribution. Our results have potential applications in onâchip testing and failure analysis.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
Section titled âReferencesâ- 2019 - Optical sensing of broadband RF magnetic field using a micrometerâsized diamond [Crossref]
- 2021 - Quantum near field probe for integrated circuits electromagnetic interference at wafer level