Covariant Phase Observables in Quantum Mechanics

The aim of this thesis is to present a solution to the quantum phase problem of the single-mode optical field. The solution is based on the use of phase shift covariant normalized positive operator measures. These measures describe realistic direct coherent state phase measurements such as the phase measurement schemes based on eight-port homodyne detection or heterodyne detection. The structure of covariant operator measures and, more generally, covariant sesquilinear form measures is analyzed in this work. Four different characterizations for phase shift covariant normalized positive operator measures are presented. The canonical covariant operator measure is definded and its properties are studied. Finally, some other suggested phase theories are introduced to investigate their connections to the covariant sesquilinear form measures.

Rouva Vikatmaa 9/12 1974

Kirje 9.12.1974

Fru Vikatmaa 9.12.1974 Åbo

Kirje

Professori Jan-Magnus Jansson 26/5 1970

Kirje 26.5.1970

Professor Jan-Magnus Jansson 26.5.1970

Kirje

Ketä korkeakoulukenttä hylkii? Opintojen keskeyttäminen akateemisen koulutushierarkian eri tasoilla

Summary: Who are rejected by the field of higher education? Dropout at different levels of the academic hierarchy of education

Laadullisen tutkimuksen kurjuus opiskelijoiden kertomana

Summary: Misery of qualitative research as told by students

'Itävallan vallankumous' : Otto Bauerin demokratia-käsitys 1907-1923

Juha Hannikainen