Joerg Wrachtrup

TL;DR: The nitrogen-vacancy (NV) colour centre in diamond is an important physical system for emergent quantum technologies, including quantum metrology, information processing and communications, as well as for various nanotechnologies such as biological and sub-diffraction limit imaging, and for tests of entanglement in quantum mechanics as mentioned in this paper.

TL;DR: The nitrogen-vacancy (NV) colour centre in diamond is an important physical system for emergent quantum technologies, including quantum metrology, information processing and communications, as well as for various nanotechnologies such as biological and sub-diffraction limit imaging, and for tests of entanglement in quantum mechanics as mentioned in this paper.

TL;DR: In this paper, point defects in diamond known as nitrogen-vacancy centres have been shown to be sensitive to minute magnetic fields, even at room temperature, and a demonstration that the spin associated with these defect centres is also sensitive to electric fields holds out the prospect of a sensor that can resolve single spins and single elementary charges at the nanoscale.

TL;DR: Quantum beats between electron spin transitions in a single spin Hahn echo experiment are observed and a closer analysis reveals that beats also result from the hyperfine coupling of the electron spin to a single 14N nuclear spin.

TL;DR: A quantum circuit in which an ensemble of electronic spins is coupled to a frequency tunable superconducting resonator and the appearance of a vacuum Rabi splitting in the transmission spectrum of the resonator when its frequency is tuned through the nitrogen-vacancy center electron spin resonance.