التفاصيل البيبلوغرافية
| العنوان: |
Pulsed squeezed light: characterization and applications |
| المؤلفون: |
Triginer Garcés, G |
| المساهمون: |
Walmsley, I, Lvovsky, A, Silberhorn, C |
| سنة النشر: |
2022 |
| المجموعة: |
Oxford University Research Archive (ORA) |
| مصطلحات موضوعية: |
Squeezed light, Quantum optics |
| الوصف: |
Squeezed light is expected to enable new quantum metrology and quantum computation applications, but the very high degree of experimental control required in practice places severe demands on the physical devices used to generate it. As ultrafast squeezed light sources are reaching an unprecedented degree of brightness and modal control, there is a strong interest in developing methods for their experimental characterization and theoretical understanding. In this thesis, we demonstrate both a new application and a new characterization technique for pulsed squeezed light. In the first part of the thesis, we present a new metrological application of pulsed squeezed light: quantum-enhanced label-free nonlinear microscopy. Stimulated emission microscopy (SEM) is a state-of-the-art pump-probe microscopy technique whose sensitivity is ultimately limited by shot noise in the probe beam. We propose to overcome this fundamental limitation by using a sub-Poissonian probe generated via optical parametric amplification. We demonstrate an intensity-squeezed sub-picosecond pulsed probe, and a simple stimulated emission microscope. Using this squeezed probe, sub-Poissonian statistics are observed in the SEM signal. After this proof-of-principle experiment, we aim to provide an improved design for a source of intensity-squeezed light. First, we develop a theoretical framework to simulate the photon statistics of a general sub-Poissonian source, considering pulsed and focused pump and seed fields in a unified spatio-temporal description. Next, we use this framework to suggest possible improvements to our previous squeezed probe. In the second part of this thesis, we provide new theoretical and experimental tools to analyze the high gain regime of pulsed spontaneous parametric down-conversion (SPDC). We study a waveguided source capable of generating twin-beams with tens of photons in a single spatio-temporal mode. We develop a framework to efficiently simulate SPDC for an arbitrary nonlinear gain, including the effect of ... |
| نوع الوثيقة: |
thesis |
| اللغة: |
English |
| العلاقة: |
https://ora.ox.ac.uk/objects/uuid:5d982edc-bf85-4089-9fb8-714865650317Test |
| الإتاحة: |
https://ora.ox.ac.uk/objects/uuid:5d982edc-bf85-4089-9fb8-714865650317Test |
| حقوق: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edsbas.5592259F |
| قاعدة البيانات: |
BASE |
