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Experimental investigations of spati...

Yarnall, Timothy.

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Experimental investigations of spatial-parity qubits.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Experimental investigations of spatial-parity qubits./
作者:	Yarnall, Timothy.
面頁冊數:	88 p.
附註:	Adviser: Malvin Teich.
Contained By:	Dissertation Abstracts International69-01B.
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298691
ISBN:	9780549441380

Experimental investigations of spatial-parity qubits.
Yarnall, Timothy.

Experimental investigations of spatial-parity qubits. - 88 p.

Adviser: Malvin Teich.

Thesis (Ph.D.)--Boston University, 2008.

I present the novel embodiment of a photonic qubit that makes use of one continuous spatial degree of freedom of a single photon and relies on the parity of the photon's transverse spatial distribution. Using optical spontaneous parametric downconversion to produce photon pairs, I demonstrate the controlled generation of entangled-photon states in this new space. Specifically, two Bell states, and a continuum of their superpositions, are generated by simple manipulation of a classical parameter, the optical-pump spatial parity, and not by manipulation of the entangled photons themselves. I report the first experimental violation of Bell's inequality in the spatial domain using the Einstein-Podolsky Rosen state. The Bell-operator measurements are made possible by devising simple optical arrangements that perform rotations in the one-dimensional spatial-parity space of each photon of an entangled pair and projective measurements via an interferometric device, isomorphic in action to a polarizing beam splitter, which projects the spatial-parity states onto an even-odd basis. A Bell-operator value is recorded that indicates a violation of the inequality by more than 24 standard deviations. For purposes of comparison, the spatial-parity properties of classical light are investigated by performing similar experiments. This new physical realization of photonic quhits could be used as a foundation for future experiments in quantum information processing.

ISBN: 9780549441380Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Experimental investigations of spatial-parity qubits.
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520 $a I present the novel embodiment of a photonic qubit that makes use of one continuous spatial degree of freedom of a single photon and relies on the parity of the photon's transverse spatial distribution. Using optical spontaneous parametric downconversion to produce photon pairs, I demonstrate the controlled generation of entangled-photon states in this new space. Specifically, two Bell states, and a continuum of their superpositions, are generated by simple manipulation of a classical parameter, the optical-pump spatial parity, and not by manipulation of the entangled photons themselves. I report the first experimental violation of Bell's inequality in the spatial domain using the Einstein-Podolsky Rosen state. The Bell-operator measurements are made possible by devising simple optical arrangements that perform rotations in the one-dimensional spatial-parity space of each photon of an entangled pair and projective measurements via an interferometric device, isomorphic in action to a polarizing beam splitter, which projects the spatial-parity states onto an even-odd basis. A Bell-operator value is recorded that indicates a violation of the inequality by more than 24 standard deviations. For purposes of comparison, the spatial-parity properties of classical light are investigated by performing similar experiments. This new physical realization of photonic quhits could be used as a foundation for future experiments in quantum information processing.
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