Quantum Metrology beyond the Classical Limit under the Effect of Dephasing


Yuichiro Matsuzaki, NTT Basic Research Laboratories

Quantum magnetic field sensors are expected to have many applications in the fields of biology and material science.

Dynamic nuclear spin polarization in quantum point contact


Ibaraki Univ. Tomosuke Aono

Electron spins can be easily polarized using external magnetic fields, but it is not the case for nuclear spins.

Prolongation of coherence time of 167Er for photon-electron coherent manipulation


Takehiko Tawara, NTT Basic Research Laboratories

We have succeeded in prolonging the coherence time T2 of the 167Er ion for optical transitions between hyperfine sublevels by isotopically purifying Er ions.

Detection and manipulation of single Cr spin in a semiconductor quantum dot


Shinji Kuroda, Institute of Materials Science, University of Tsukuba

Recently, much effort has been devoted to manipulate a single spin in various systems aiming at applications for quantum computation.

Efficient extraction of photons from a NV center embedded in a diamond nanowire utilizing an optical nanofiber


Takao Aoki, Waseda University

NV centers in diamond have good optical properties and offer a wide variety of applications based on its interaction with photons, such as single-photon sources and quantum memories.