امكان‌سنجي و بررسي چيدمان آزمايشگاهي چشمه فوتون ابر درهم‌تنيده بر اساس فرايند تبديل پارامتري پايين¬سو خود به خودي

Feasibility an‎d Investigation of Experimental setup of a Hyperentangled Photon Source in the Spontaneous Parametric Down Conversion Process

فيزيك

‫Quantum entanglement, recognized as the heart of quantum mechanics, constitutes the fundamental foundation for numerous quantum technologies. However, the high sensitivity of this phenomenon to environmental noises such as mechanical vibrations, temperature fluctuations, an‎d electronic noise makes its preservation an‎d control both challenging an‎d costly. This thesis presents an‎d examines a method for preserving an‎d controlling entangled photons. These photons are created in different computational bases, namely polarization prepared in a Sagnac interferometer an‎d time difference prepared an‎d measured in a Franson interferometer, which consists of two Mach-Zehnder interferometers with an 80 centimeter path imbalance. Together, they form a hyperentangled system. This combined architecture is anticipated to significantly enhance the overall noise resistance of the system. Finally, based on conducted theoretical analyses an‎d review studies, a redesigned fiber-optic-based system is proposed, an‎d its key components are investigated.

5

171637