Blind phase retrieval and source separation of electromagnetic fields.
← Research streamThe authors report that, using an eigenvalue-problem formalism, the intensities and relative phase of two electromagnetic waves can be determined even when the mixing processes are completely unknown, despite only power (square of summed fields) being directl…
Study snapshot
Abstract
Blind source separation of two electromagnetic fields is investigated. The difficulty of this task lies in the fact that only the power, which is the square of the sum of the electromagnetic fields, can be directly measured; the cross term of the electromagnetic fields is inevitable, and a strong correlation occurs in blind deconvolution. However, the relative phase is physically different from the field intensities, and, hence, extracting the phase during separation seems inconceivable. Our results demonstrate that the intensities and the relative phase of two electromagnetic waves can be determined with eigenvalue problem formalism even when the mixing processes are completely unknown.
AI evidence extraction
Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.
Main findings
The authors report that, using an eigenvalue-problem formalism, the intensities and relative phase of two electromagnetic waves can be determined even when the mixing processes are completely unknown, despite only power (square of summed fields) being directly measurable.
Outcomes measured
- Blind source separation of electromagnetic fields
- Phase retrieval (relative phase estimation)
- Intensity estimation of electromagnetic waves
View raw extracted JSON
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"outcomes": [
"Blind source separation of electromagnetic fields",
"Phase retrieval (relative phase estimation)",
"Intensity estimation of electromagnetic waves"
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"main_findings": "The authors report that, using an eigenvalue-problem formalism, the intensities and relative phase of two electromagnetic waves can be determined even when the mixing processes are completely unknown, despite only power (square of summed fields) being directly measurable.",
"effect_direction": "unclear",
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"keywords": [
"blind source separation",
"blind deconvolution",
"phase retrieval",
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"electromagnetic fields",
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}AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.
Identifiers and source
DOI: 10.1364/ol.27.000089
PubMed: 18007721