التفاصيل البيبلوغرافية
| العنوان: |
Quantum stochastic communication with photon-number squeezed light |
| المؤلفون: |
Paramanandam, Joshua |
| المساهمون: |
Paramanandam, Joshua (author), Parker, Michael (chair), Cheung, Kin (internal member), Gajic, Zoran (internal member), Rutgers University, Graduate School - New Brunswick |
| سنة النشر: |
2007 |
| المجموعة: |
RUcore - Rutgers University Community Repository |
| مصطلحات موضوعية: |
Electrical and Computer Engineering, Telecommunication, Stochastic processes, Squeezed light |
| الوصف: |
Squeezed states of light have found importance in quantum cryptography due to the no-cloning theorem which prevents two states from being identical to each other. The quantum state with quadrature operators X1 and X2 can be visualized as a point in phase space with the center being l angle X1 r angle, l angle X2 r angle surrounded by an error region which satisfies the minimum uncertainty product l angle Delta X [1 over 2] r angle l angle Delta X [2 over2] r angle=1/16. These states are intrinsically secure since one needs to know which quadrature the measurement is to be made and any attempt to measure the wrong quadratures with arbitrary accuracy would disturb the message. Of course, the eavesdropper cannot simultaneously measure both quadratures with infinite precision for each. This thesis describes a method that not only encodes information in the amplitudes of the quadratures alone but also in the uncertainty of those states. One example of squeezed light is the number-phase squeezed state which satisfying the uncertainity relation l angle Delta n [superscript] 2 r angle l angle Delta phi [superscript] 2 r angle=1/4. An implementation is demonstrated where the information is encoded only in the photon number uncertainity and the phase variable is ignored. The barrier regulation mechanisms such as macroscopic coulomb blockade in semiconductor junction diodes are responsible for generating photon fluxes with penetration below the standard quantum limit(shot noise level). The thesis describes a comprehensive quantum mechanical Langevin model which details the various mechanisms responsible for producing photon number squeezing from the thermionic emission to the diffusion current limits. Quantities such as the pump fluctuations and cross correlation spectral densities are studied under constant current and constant voltage conditions. The research investigates the generation of photon number squeezed light from high efficiency light emitting diodes. A measurement setup for subshot noise is constructed and ... |
| نوع الوثيقة: |
thesis |
| وصف الملف: |
xviii, 264 pages; electronic; application/pdf |
| اللغة: |
English |
| العلاقة: |
Graduate School - New Brunswick Electronic Theses and Dissertations; rucore19991600001; http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.16755Test |
| الإتاحة: |
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.16755Test |
| رقم الانضمام: |
edsbas.37652DE |
| قاعدة البيانات: |
BASE |
