Nuclear Spin Dynamics of Ionized Phosphorus Donors in Silicon

Abstract

We demonstrate the coherent control and electrical readout of the nuclear spins of ionized phosphorus donors in natural silicon. By combining pulsed illumination with coherent electron spin manipulation, we selectively ionize the donor depending on its nuclear spin state, exploiting a spin-dependent recombination process via a spin pair at the Si/SiO2 interface. The nuclear-spin coherence time of the ionized donor is 18 ms, two orders of magnitude longer than in the neutral donor state, rendering the ionized donor a potential resource as a quantum memory. The presented experimental techniques allow for spectroscopy of ionized-donor nuclear spins, increase the sensitivity of electrically detected electron nuclear double resonance by more than two orders of magnitude, and give experimental access to the lifetime of parallel electron spin pairs.

6 pages, 4 figures

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• Roadmap for Unconventional Computing with Nanotechnology
• Interaction of Strain and Nuclear Spins in Silicon: Quadrupolar Effects on Ionized Donors
• Time Constants of Spin-Dependent Recombination Processes
• Stark shift and field ionization of arsenic donors in ${}^{28}$Si-SOI structures
• Measuring central-spin interaction with a spin bath by pulsed ENDOR: Towards suppression of spin diffusion decoherence
• Quantum spectroscopy of single spins assisted by a classical clock
• Inductive measurement of optically hyperpolarized phosphorous donor nuclei in an isotopically-enriched silicon-28 crystal
• Spin resonance linewidths of bismuth donors in silicon coupled to planar microresonators
• Electrically Detected Double Electron-Electron Resonance: Exchange Interaction of 31P Donors and Pb0 Defects at the Si/SiO2 Interface
• Spin relaxation and donor-acceptor recombination of Se${}^{+}$ in 28-silicon
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• Quadrupolar Effects on Nuclear Spins of Neutral Arsenic Donors in Silicon
• Spin-dependent recombination involving oxygen-vacancy complexes in silicon
• Broadband Electrically Detected Magnetic Resonance Using Adiabatic Pulses
• Spin dependent recombination based magnetic resonance spectroscopy of bismuth donor spins in silicon at low magnetic fields
• Anisotropic Stark Effect and Electric-Field Noise Suppression for Phosphorus Donor Qubits in Silicon
• Splitting Valleys in Si/SiO${}_2$: Identification and Control of Interface States
• Nuclear spin decoherence of neutral ${}^{31}$P donors in silicon: Effect of environmental ${}^{29}$Si nuclei
• Real Time Electrical Detection of Coherent Spin Oscillations
• Multiple-quantum transitions and charge-induced decoherence of donor nuclear spins in silicon
• Electron nuclear double resonance with donor-bound excitons in silicon
• Numerically exact quantum dynamics with tensor networks: Predicting the decoherence of interacting spin systems