Details

Autor(en) / Beteiligte

• Watson, T F
• Weber, B
• House, M G
• Büch, H
• Simmons, M Y

Titel

High-Fidelity Rapid Initialization and Read-Out of an Electron Spin via the Single Donor D(-) Charge State

Ist Teil von

• Physical review letters, 2015-10, Vol.115 (16), p.166806-166806, Article 166806

Ort / Verlag

United States

Erscheinungsjahr

2015

Link zum Volltext

Quelle

PROLA

Beschreibungen/Notizen

• We demonstrate high-fidelity electron spin read-out of a precision placed single donor in silicon via spin selective tunneling to either the D(+) or D(-) charge state of the donor. By performing read-out at the stable two electron D(0)↔D(-) charge transition we can increase the tunnel rates to a nearby single electron transistor charge sensor by nearly 2 orders of magnitude, allowing faster qubit read-out (1 ms) with minimum loss in read-out fidelity (98.4%) compared to read-out at the D(+)↔D(0) transition (99.6%). Furthermore, we show that read-out via the D(-) charge state can be used to rapidly initialize the electron spin qubit in its ground state with a fidelity of F(I)=99.8%.