Title:
Theoretical studies of atom-atom, atom-photon and photon-photon entanglement

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dc.contributor.advisor You, Li
dc.contributor.author Sun, Bo en_US
dc.contributor.committeeMember Chapman Michael
dc.contributor.committeeMember Citrin David
dc.contributor.committeeMember Fox Ronald
dc.contributor.committeeMember Kuzmich Alex
dc.contributor.department Physics en_US
dc.date.accessioned 2007-03-27T18:21:18Z
dc.date.available 2007-03-27T18:21:18Z
dc.date.issued 2006-11-09 en_US
dc.description.abstract In this thesis the entanglement properties of atom-atom, atom-photon, and photon-photon are investigated. The recent developments of quantum computation as well as quantum information and communication have attracted much interest in the generation of these entanglements in the laboratory. To generate atom-photon entanglement, I discuss a model system in the cavity QED setup. By using a four-level atom and two resonant cavity modes, we can generate atom-photon entanglement almost deterministically. An extension of the above model to a six-level atom and again two resonant cavity modes can generate entangled photon pairs by appropriately adjusting system parameters. I then investigate the atom-atom entanglement in a 1D harmonic trap. I show the dependence of the pair entanglement on the scattering length and temperature, as well as the particle symmetry requirement (bosons or fermions). Among many peculiar properties in a 1D system, we briefly discuss the Fermi-Bose duality". While the entanglement properties of a single-channel model have recently been obtained for 1D and 3D systems, I thus study the entanglement of a multi-channel process in a cylindrical harmonic trap. I discuss the dependence of entanglement on the trap geometry. Finally I present detailed studies of the spin mixing between two Rb87 atoms in a single lattice site. The topic is emphasized on various motional state approximations and dipolar effect. Various motional state approximations can cause up to 20% error to experimental data. I also find that the dipolar interaction can lead to an experimentally observable frequency shift in a cylindrical harmonic trap with very large aspect ratio. The spin mixing of spin-2 manifold has also been discussed. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 1909550 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/14078
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Motional en_US
dc.subject Shift en_US
dc.subject Dipolar en_US
dc.subject.lcsh Statistical physics en_US
dc.subject.lcsh Quantum theory en_US
dc.subject.lcsh Photonuclear reactions en_US
dc.subject.lcsh Dipole moments en_US
dc.title Theoretical studies of atom-atom, atom-photon and photon-photon entanglement en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.corporatename College of Sciences
local.contributor.corporatename School of Physics
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
relation.isOrgUnitOfPublication 2ba39017-11f1-40f4-9bc5-66f17b8f1539
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