Graduate Thesis Or Dissertation

 

Redundant information in a spin system beyond pure decoherence Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/z603r113v

Descriptions

Attribute NameValues
Creator
Abstract
  • Quantum physics in the Copenhagen interpretation places an unsatisfying divide between the quantum and classical worlds. Decoherence -- the destruction of superposition states of the system -- helps us understand how the quantum transitions to the classical. Quantum Darwinism builds on decoherence to understand how information about the system is deposited in the environment. This gives a framework to describe the emergence of objective, classical reality from the fundamentally unpredictable quantum domain. Considering a model of a qubit interacting with a symmetric spin environment, we study how information about the system is transferred into the environment when the system has intrinsic dynamics. That is, we examine a model beyond "pure decoherence". We develop a computational technique to compute the mutual information between the system and a fragment of the environment as a function of the strength of the system's Hamiltonian. The intrinsic dynamics of the system influences the proliferation of information. However, there is always a redundant transfer of information for a weak system Hamiltonian. Only when the system evolves so rapidly that the environment can not effectively monitor its state does redundancy vanish.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Keyword
Subject
Rights Statement
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Submitted by Andrew Svesko (sveskoa@onid.orst.edu) on 2014-06-13T18:54:49Z No. of bitstreams: 1 SveskoAndrewM2014.pdf: 3151104 bytes, checksum: 656863be9ddc3039e1d2418f3b7ad358 (MD5)
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2014-06-20T19:51:54Z (GMT) No. of bitstreams: 1 SveskoAndrewM2014.pdf: 3151104 bytes, checksum: 656863be9ddc3039e1d2418f3b7ad358 (MD5)
  • description.provenance : Made available in DSpace on 2014-07-01T20:05:46Z (GMT). No. of bitstreams: 1 SveskoAndrewM2014.pdf: 3151104 bytes, checksum: 656863be9ddc3039e1d2418f3b7ad358 (MD5) Previous issue date: 2014-05-29
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2014-07-01T20:05:46Z (GMT) No. of bitstreams: 1 SveskoAndrewM2014.pdf: 3151104 bytes, checksum: 656863be9ddc3039e1d2418f3b7ad358 (MD5)

Relationships

Parents:

This work has no parents.

In Collection:

Items