Abstract
A quantum polarized light microscope using entangled NOON states with and is shown to provide phase supersensitivity beyond the standard quantum limit. We constructed such a microscope and imaged birefringent objects at a very low light level of 50 photons per pixel, where shot noise seriously hampers classical imaging. The NOON light source is formed by combining a coherent state with parametric down-converted light. We were able to show improved phase images with sensitivity close to the Heisenberg limit.
- Received 5 October 2013
DOI:https://doi.org/10.1103/PhysRevLett.112.103604
© 2014 American Physical Society
Synopsis
A Quantum Microscope at High NOON
Published 12 March 2014
A special quantum entanglement called the NOON state enables microscopy at very low light levels.
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