تقرير
High-sensitivity quantum sensing with pump-enhanced spontaneous parametric down-conversion
| العنوان: | High-sensitivity quantum sensing with pump-enhanced spontaneous parametric down-conversion |
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| المؤلفون: | Lindner, Chiara, Kunz, Jachin, Herr, Simon J., Kiessling, Jens, Wolf, Sebastian, Kühnemann, Frank |
| سنة النشر: | 2022 |
| المجموعة: | Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Physics - Optics |
| الوصف: | Recent years have seen the development of quantum sensing concepts utilizing nonlinear interferometers based on correlated photon pairs generated by spontaneous parametric down-conversion (SPDC). Using SPDC far from frequency degeneracy allows a 'division of labor' between the mid-infrared photon for strongest sample interaction and the correlated near-infrared photon for low-noise detection. The small number of photons provided by SPDC and the resulting inferior signal-to-noise ratio are, however, a limiting factor preventing wide applicability of the novel sensing concept. Here, we demonstrate a nonlinear interferometer based on pump-enhanced SPDC with strongly improved emission rates, but maintaining broadband, spontaneous emission. For validation of the concept, we demonstrate high-resolution mid-infrared spectroscopy with near-infrared detection, showcasing the improved accuracy. Although the number of mid-infrared photons is about five orders of magnitude smaller than in classical spectrometers, the sensitivity of the quantum spectrometer becomes comparable, marking an essential step toward real-world applications. |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2208.07595 |
| رقم الأكسشن: | edsarx.2208.07595 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |