التفاصيل البيبلوغرافية
| العنوان: |
A Bright Squeezed Light Source for Quantum Sensing |
| المؤلفون: |
Wenhai Yang, Wenting Diao, Chunxiao Cai, Tao Wu, Ke Wu, Yu Li, Cong Li, Chongdi Duan, Hanyang Leng, Ning Zi, Xukun Yin |
| المصدر: |
Chemosensors; Volume 11; Issue 1; Pages: 18 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2022 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
quantum sensing, bright squeezed light, intracavity loss, escape efficiency |
| الوصف: |
The use of optical sensing for in vivo applications is compelling, since it offers the advantages of non-invasiveness, non-ionizing radiation, and real-time monitoring. However, the signal-to-noise ratio (SNR) of the optical signal deteriorates dramatically as the biological tissue increases. Although increasing laser power can improve the SNR, intense lasers can severely disturb biological processes and viability. Quantum sensing with bright squeezed light can make the measurement sensitivity break through the quantum noise limit under weak laser conditions. A bright squeezed light source is demonstrated to avoid the deterioration of SNR and biological damage, which integrates an external cavity frequency-doubled laser, a semi-monolithic standing cavity with periodically poled titanyl phosphate (PPKTP), and a balanced homodyne detector (BHD) assembled on a dedicated breadboard. With the rational design of the mechanical elements, the optical layout, and the feedback control equipment, a maximum non-classical noise reduction of −10.7 ± 0.2 dB is observed. The average squeeze of −10 ± 0.2 dB in continuous operation for 60 min is demonstrated. Finally, the intracavity loss of degenerate optical parametric amplifier (DOPA) and the initial bright squeezed light can be calculated to be 0.0021 and −15.5 ± 0.2 dB, respectively. Through the above experimental and theoretical analysis, the direction of improving bright squeeze level is pointed out. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
Optical Chemical Sensors; https://dx.doi.org/10.3390/chemosensors11010018Test |
| DOI: |
10.3390/chemosensors11010018 |
| الإتاحة: |
https://doi.org/10.3390/chemosensors11010018Test |
| حقوق: |
https://creativecommons.org/licenses/by/4.0Test/ |
| رقم الانضمام: |
edsbas.DA746A05 |
| قاعدة البيانات: |
BASE |
