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arXiv · 1408.1347

Coherent Control of a Single Silicon-29 Nuclear Spin Qubit

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

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 materials, the spin-bearing nuclei are sufficiently rare that it is possible to identify and control individual host nuclear spins. This work presents the first experimental detection and manipulation of a single $^{29}$Si nuclear spin. The quantum non-demolition (QND) single-shot readout of the spin is demonstrated, and a Hahn echo measurement reveals a coherence time of $T_2 = 6.3(7)$ ms - in excellent agreement with bulk experiments. Atomistic modeling combined with extracted experimental parameters provides possible lattice sites for the $^{29}$Si atom under investigation. These results demonstrate that single $^{29}$Si nuclear spins could serve as a valuable resource in a silicon spin-based quantum computer.

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Jarryd J. Pla, Fahd A. Mohiyaddin, Kuan Y. Tan, Juan P. Dehollain, Rajib Rahman, Gerhard Klimeck, David N. Jamieson, Andrew S. Dzurak, Andrea Morello. 2014-08-06. Coherent Control of a Single Silicon-29 Nuclear Spin Qubit. https://doi.org/10.1103/physrevlett.113.246801

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