Spectral structure and decompositions of optical states, and their applications

Rohde, PP; Mauerer, W; Silberhorn, C

Spectral structure and decompositions of optical states, and their applications

Rohde, PP

Mauerer, W Silberhorn, C

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Publication Type:: Journal Article
Citation:: New Journal of Physics, 2007, 9
Issue Date:: 2007-04-12

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Field	Value	Language
dc.contributor.author	Rohde, PP https://orcid.org/0000-0002-5814-7289	en_US
dc.contributor.author	Mauerer, W	en_US
dc.contributor.author	Silberhorn, C	en_US
dc.date.issued	2007-04-12	en_US
dc.identifier.citation	New Journal of Physics, 2007, 9	en_US
dc.identifier.issn	1367-2630	en_US
dc.identifier.uri	http://hdl.handle.net/10453/132374
dc.description.abstract	We discuss the spectral structure and decomposition of multiphoton states. Ordinarily 'multi-photon states' and 'Fock states' are regarded as synonymous. However, when the spectral degrees of freedom are included this is not the case, and the class of 'multi-photon' states is much broader than the class of 'Fock' states. We discuss the criteria for a state to be considered a Fock state. We then address the decomposition of general multi-photon states into bases of orthogonal eigenmodes, building on existing multi-mode theory, and introduce an occupation number representation that provides an elegant description of such states. This representation allows us to work in bases imposed by experimental constraints, simplifying calculations in many situations. Finally we apply this technique to several example situations, which are highly relevant for state of the art experiments. These include Hong-Ou-Mandel interference, spectral filtering, finite bandwidth photo-detection, homodyne detection and the conditional preparation of Schrödinger kitten and Fock states. Our techniques allow for very simple descriptions of each of these examples. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.	en_US
dc.relation.ispartof	New Journal of Physics	en_US
dc.relation.isbasedon	10.1088/1367-2630/9/4/091	en_US
dc.subject.classification	Fluids & Plasmas	en_US
dc.title	Spectral structure and decompositions of optical states, and their applications	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.for	02 Physical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - QSI - Centre for Quantum Software and Information
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	9	en_US

Abstract:

We discuss the spectral structure and decomposition of multiphoton states. Ordinarily 'multi-photon states' and 'Fock states' are regarded as synonymous. However, when the spectral degrees of freedom are included this is not the case, and the class of 'multi-photon' states is much broader than the class of 'Fock' states. We discuss the criteria for a state to be considered a Fock state. We then address the decomposition of general multi-photon states into bases of orthogonal eigenmodes, building on existing multi-mode theory, and introduce an occupation number representation that provides an elegant description of such states. This representation allows us to work in bases imposed by experimental constraints, simplifying calculations in many situations. Finally we apply this technique to several example situations, which are highly relevant for state of the art experiments. These include Hong-Ou-Mandel interference, spectral filtering, finite bandwidth photo-detection, homodyne detection and the conditional preparation of Schrödinger kitten and Fock states. Our techniques allow for very simple descriptions of each of these examples. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

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http://hdl.handle.net/10453/132374