Doubling measurements with light
Press release issued: 11 May 2007
Research from the University of Bristol has demonstrated a way to almost double measurement precision by using photons of light with which to gauge distances.
Dr Jeremy O’Brien, the only British member of an otherwise all-Japanese team, said: “The precision of such a measurement depends on the wavelength of the light used. By using a group of four-photons, the set behaves as if it had a shorter wavelength than a single photon. This is rather like using a ruler with spacing four times as fine.”
Further details of this ground-breaking research can be read at Science News.