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News Picks : Live-cell imaging technique uses squeezed light

By: Physics Today
12 February 2014
Ars Technica: Australian researchers are working on an imaging technique that uses squeezed states of light to more precisely map the movements of nanoparticles through the interiors of living cells. Unlike a coherent light source, whose phase and amplitude have the minimum noise allowed by quantum mechanics, squeezed light reduces the noise of one mode to the detriment of the other. In this case, the researchers used amplitude-squeezed light to track the movements of the nanoparticles. Although the particle tracking accuracy of the quantum-correlated light was much improved over that of ordinary imaging, the squeezing technique needs to be further refined to extend to longer time periods.


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