Quantum coherence control usually requires low temperature environments. Even for nitrogen-vacancy center spins in diamond, a remarkable exception, the coherence signal is limited to about 700 K due to the quench of the spin-dependent fluorescence at a higher temperature. Here researchers overcome this limit and demonstrate quantum coherence control of the electron spins of nitrogen-vacancy …
A new study suggests that 120 to 150 kilometers (75 to 93 miles) under the Earth’s surface there is 1000 trillion tons of diamonds. The diamonds are in the “roots” of cratons, which are large sections of rock. Cratons lie beneath most continental tectonic plates. They created a three-dimensional model of the velocities of seismic …
Physicists at Imperial College London can now produce a continuous maser beam in room-temperature conditions. The set-up involves shining a laser light through a diamond, sapphire and copper apparatus to create the microwave emission. The sensitivity of existing microwave amplifiers had been limited by background noise. The latest technique “pushes the noise of these amplifiers …
The Transiting Exoplanet Survey Satellite (TESS) is a planned space telescope for NASA’s Explorers program, designed to search for exoplanets using the transit method. It is planned for launch in December 2017. The primary mission objective for TESS is to survey the brightest stars near the Earth for transiting exoplanets over a two-year period. The …