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Maximally polarized...
Maximally polarized states for quantum light fields
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Sanchez-Soto, Luis L. (författare)
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Yustas, Eulogio C. (författare)
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- Björk, Gunnar (författare)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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Klimov, Andrei B. (författare)
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(creator_code:org_t)
- 2007
- 2007
- Engelska.
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Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 76:4
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The degree of polarization of a quantum field can be defined as its distance to an appropriate set of states. When we take unpolarized states as this reference set, the states optimizing this degree for a fixed average number of photons (N) over bar present a fairly symmetric, parabolic photon statistic, with a variance scaling as (N) over bar (2). Although no standard optical process yields such a statistic, we show that, to an excellent approximation, a highly squeezed vacuum can be taken as maximally polarized. We also consider the distance of a field to the set of its SU(2) transformed, finding that certain linear superpositions of SU(2) coherent states make this degree to be unity.
Nyckelord
- polarimetric contrast parameters
- hilbert-schmidt distance
- unpolarized radiation
- entanglement measures
- squeezed-light
- atomic states
- optical waves
- information
- entropy
- fluctuations
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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