@article{840,
  abstract     = {Heavy holes confined in quantum dots are predicted to be promising candidates for the realization of spin qubits with long coherence times. Here we focus on such heavy-hole states confined in germanium hut wires. By tuning the growth density of the latter we can realize a T-like structure between two neighboring wires. Such a structure allows the realization of a charge sensor, which is electrostatically and tunnel coupled to a quantum dot, with charge-transfer signals as high as 0.3 e. By integrating the T-like structure into a radiofrequency reflectometry setup, single-shot measurements allowing the extraction of hole tunneling times are performed. The extracted tunneling times of less than 10 μs are attributed to the small effective mass of Ge heavy-hole states and pave the way toward projective spin readout measurements.},
  author       = {Vukusic, Lada and Kukucka, Josip and Watzinger, Hannes and Katsaros, Georgios},
  issn         = {1530-6984},
  journal      = {Nano Letters},
  number       = {9},
  pages        = {5706 -- 5710},
  publisher    = {American Chemical Society},
  title        = {{Fast hole tunneling times in germanium hut wires probed by single-shot reflectometry}},
  doi          = {10.1021/acs.nanolett.7b02627},
  volume       = {17},
  year         = {2017},
}