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Artist's impression of the optical apparatus used to perform fluorescent imaging of a single, trapped, cooled ytterbium ion. The ultrahigh positional sensitivity of the approach makes it possible to directly observe atomic motion.
John Love, co-author of the famous book Optical Waveguide Theory, passed away on 19 June 2016. The Australian optics community has lost a founding pillar.
The discovery that Raman scattering, with a little help from excitons, may be exploited to induce cooling of a solid-state material bodes well for new forms of optical refrigeration.
The synthesis of more efficient upconversion nanomaterials that absorb multiple low-energy photons in the near-infrared and then re-emit in the visible or ultraviolet was a key theme at the first UPCON conference.
The local amplitude and phase of a single photon is retrieved using a method similar to classical holography. The interference of optical fields is replaced by the non-classical interference of spatially varying two-photon probability amplitudes.
Cheap and sensitive gamma-ray detectors are desired for defence, medical and research applications. Solid-state gamma-radiation detectors made from solution-grown perovskites have now been demonstrated for multiple practical applications.
Raman cooling and heating of a longitudinal optical phonon with a 6.23-THz frequency are observed in ZnTe nanobelts. The direction of the energy flow is changed by detuning the frequency of the pump laser.
The position of a single Yb atomic ion is determined with a minimum uncertainty of 1.7 nm for 0.2 s integration time — the highest position sensitivity reported to date for an isolated atom.