Use this URL to cite or link to this record in EThOS:
Title: Phase space methods in finite quantum systems
Author: Hadhrami, Hilal Al
ISNI:       0000 0004 2718 2369
Awarding Body: University of Bradford
Current Institution: University of Bradford
Date of Award: 2009
Availability of Full Text:
Access from EThOS:
Access from Institution:
Quantum systems with finite Hilbert space where position x and momentum p take values in Z(d) (integers modulo d) are considered. Symplectic tranformations S(2ξ,Z(p)) in ξ-partite finite quantum systems are studied and constructed explicitly. Examples of applying such simple method is given for the case of bi-partite and tri-partite systems. The quantum correlations between the sub-systems after applying these transformations are discussed and quantified using various methods. An extended phase-space x-p-X-P where X, P ε Z(d) are position increment and momentum increment, is introduced. In this phase space the extended Wigner and Weyl functions are defined and their marginal properties are studied. The fourth order interference in the extended phase space is studied and verified using the extended Wigner function. It is seen that for both pure and mixed states the fourth order interference can be obtained.
Supervisor: Vourdas, Apostolos. Sponsor: Ministry of Higher Education, Sultanate of Oman
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Phase space methods ; Finite quantum systems ; Finite Hilbert space ; Symplectic tranformations ; Bi-partite and tri-partite systems ; Wigner function