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[ subject:"Physics, Optics." ]
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Quantum information processing with ...
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Waks, Edo.
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Quantum information processing with non-classical light.
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
Quantum information processing with non-classical light./
作者:
Waks, Edo.
面頁冊數:
175 p.
附註:
Adviser: Yoshihisa Yamamoto.
Contained By:
Dissertation Abstracts International64-05B.
標題:
Physics, Optics. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3090699
Quantum information processing with non-classical light.
Waks, Edo.
Quantum information processing with non-classical light.
- 175 p.
Adviser: Yoshihisa Yamamoto.
Thesis (Ph.D.)--Stanford University, 2003.
Quantum information processing (QIP) is a field concerned with technological applications of quantum mechanical phenonomena. In many cases, photons are an ideal quantum system for such applications. Photons exhibit superb coherence properties, are robust to environmental noise, and can be transmitted over long distances.Subjects--Topical Terms:
1018756
Physics, Optics.
Quantum information processing with non-classical light.
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Quantum information processing (QIP) is a field concerned with technological applications of quantum mechanical phenonomena. In many cases, photons are an ideal quantum system for such applications. Photons exhibit superb coherence properties, are robust to environmental noise, and can be transmitted over long distances.
520
$a
One of the main difficulties of photon based quantum information processing is the generation of non-classical light fields. Non-classical light fields exhibit counting statistics which are inconsistent with the classical theory of radiation. These non-classical statistics are precisely what QIP applications make use of in many cases.
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This thesis explores the applications of non-classical light fields for quantum information processing applications. There are three main parts to this work. The first part is a theoretical analysis of quantum cryptography based on non-classical light sources. In this part, a theoretical study on sub-Poisson light sources is presented, which quantitatively characterizes their advantage over classical sources such attenuated laser. Next, the security of quantum cryptography with entangled photons is investigated. A security proof is presented, and it is shown that such protocols have significantly enhanced security properties, potentially allowing quantum cryptography over 170km with currently available technology.
520
$a
The second part is an experimental demonstration of quantum cryptography using sub-Poisson light from an InAs quantum dot. A fully functional system is presented, and an experimental comparison between the quantum dot source and an attenuated laser is made. It is shown that the quantum dot can withstand 5dB of additional channel loss over the attenuated laser.
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In the final part, a method for photon number generation is presented using parametric down-conversion and the Visible Light Photon Counter (VLPC). The VLPC is a photon counter that has the ability to do photon number discrimination with very high quantum efficiency. When combined with a non-linear optical process called parameric down-conversion, one can generate photon number states. An experimental demonstration of 1,2,3 and 4 photon number states is presented.
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http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3090699
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