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061020s2006 txu sbm 000 0 eng d |
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|a (OCoLC)ocm73825705
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|a (TxCM)http://handle.tamu.edu/1969.1/3797
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|a TXA
|c TXA
|d UtOrBLW
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|a TXAM
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|a 2006
|a Dissertation 1969.1/3797
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|a Xiong, Han, 1974-
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|a Coherence-induced entanglement /
|c by Han Xiong.
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|a [College Station, Tex.] :
|b [Texas A&M University],
|c [2006]
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|a text
|b txt
|2 rdacontent
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|a computer
|b c
|2 rdamedia
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|a online resource
|b cr
|2 rdacarrier
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|a "Major Subject: Physics"
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|a Title from author supplied metadata (automated record created on Sep. 15, 2006.)
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|a Vita.
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|a Abstract.
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|b Ph. D.
|c Texas A&M University
|d 2006.
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|a Includes bibliographical references.
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|a Text (Dissertation).
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|a Coherence and entanglement are the two key concepts that distinguish quantum mechanics from classical mechanics. Many novel phenomena occuring in the quantum world are due to these two "physical quantities". They also play essential roles in quantum computation and quantum information. For example, coherence, which says that a quantum mechanical system could be in a superposition state, makes the quantum parallel computing scheme possible; and entanglement, which says that two quantum systems separated in space could be in an intervened state, is the key factor in various quantum teleportation algorithms. We have studied entanglement generation in various systems. We found that with atomic coherence, entanglement could be generated between two thermal fields with arbitrarily high temperatures. We also found that temperature difference instead of the purity of state is essential for the entanglement generation between an atom and a thermal field. We discovered that correlated spontaneous emission lasers (CELs) could be used to generate bright entanglement laser beams. As a special case of CELsystems, we studied entanglement generation in Non-degenerate Optical Parametric Amplifiers (NOPAs). We performed the input-output calculations for a NOPA system and showed that the two output optical beams are still entangled. This justifies our idea that CEL (or NOPA) systems can be used as an ideal entanglement source for various quantum information schemes. From an experimental point of view, we considered the effects of pumping fluctuations on entanglement generation in CELand NOPA systems. We found that these fluctuations, especially the phase diffusion processes, in the pump laser would greatly reduce the entanglement generated in such systems.
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|a Mode of access: World Wide Web.
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|a System requirements: World Wide Web access and Adobe Acrobat Reader.
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|a Electronic resource.
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|a Major physics.
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|a Entanglement
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|a Quantum Information
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|a Scully, Marlan O.,
|e thesis advisor.
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|a Zubairy, Muhammad Suhail,
|e thesis advisor.
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|u http://hdl.handle.net/1969.1/3797
|z Link to OAK Trust copy
|t 0
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|b cmulkey
|c 2006/10/20
|d 1:44:04 pm
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|a Texas A&M University
|b College Station
|c Electronic Resources
|d Available Online
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|e 2006 Dissertation 1969.1/3797
|h Other scheme
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|a 2006 Dissertation 1969.1/3797
|t 0
|l Available Online
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