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Correlated‐Photon Metrology Without Absolute Standards

JAN 01, 1999
The quantum correlation of paired photons produced in nonlinear optical crystals promises metrologists something of a free lunch: absolute measurements that don’t require absolute standards.
Alan Migdall

Just like human twins who evoke amazement and a ense of mystery by reporting empathetic experiences across great distances, photons born in pairs also astonish us by their quantum‐correlated behavior.

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References

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More about the Authors

Alan Migdall. National Institute of Standards and Technology, Gaithersburg, Maryland.

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This Content Appeared In
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Volume 52, Number 1

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