Details

Autor(en) / Beteiligte

• Pla, Jarryd J
• Mohiyaddin, Fahd A
• Tan, Kuan Y
• Dehollain, Juan P
• Rahman, Rajib
• Klimeck, Gerhard
• Jamieson, David N
• Dzurak, Andrew S
• Morello, Andrea

Titel

Coherent control of a single ²⁹Si nuclear spin qubit

Ist Teil von

• Physical review letters, 2014-12, Vol.113 (24), p.246801-246801

Ort / Verlag

United States

Erscheinungsjahr

2014

Link zum Volltext

Quelle

PROLA

Beschreibungen/Notizen

• Magnetic fluctuations caused by the nuclear spins of a host crystal are often the leading source of decoherence for many types of solid-state spin qubit. In group-IV semiconductor materials, the spin-bearing nuclei are sufficiently rare that it is possible to identify and control individual host nuclear spins. This Letter presents the first experimental detection and manipulation of a single ²⁹Si nuclear spin. The quantum nondemolition single-shot readout of the spin is demonstrated, and a Hahn echo measurement reveals a coherence time of T₂=6.3(7)  ms—in excellent agreement with bulk experiments. Atomistic modeling combined with extracted experimental parameters provides possible lattice sites for the ²⁹Si atom under investigation. These results demonstrate that single ²⁹Si nuclear spins could serve as a valuable resource in a silicon spin-based quantum computer.