Use of Nuclear Spin Impurities to Suppress Electronic Spin Fluctuations and Decoherence in Composite Solid-State Spin Systems

摘要

A solid state electronic spin system contains electronic spins disposed within a solid state lattice and coupled to an electronic spin bath and a nuclear spin bath, where the electronic spin bath composed of electronic spin impurities and the nuclear spin bath composed of nuclear spin impurities. The concentration of nuclear spin impurities in the nuclear spin bath is controlled to a value chosen so as to allow the nuclear spin impurities to effect a suppression of spin fluctuations and spin decoherence caused by the electronic spin bath. Sensing devices such as magnetic field detectors can exploit such a spin bath suppression effect, by applying optical radiation to the electronic spins for initialization and readout, and applying RF pulses to dynamically decouple the electronic spins from the electronic spin bath and the nuclear spin bath.

主权项

1. A system comprising:
a solid state electronic spin system containing one or more electronic spins disposed within a solid state lattice and coupled to an electronic spin bath and a nuclear spin bath, the electronic spin bath composed of electronic spin impurities and the nuclear spin bath composed of nuclear spin impurities; wherein concentration of the nuclear spin impurities in the nuclear spin bath is chosen so that the nuclear spin impurities effect a suppression of spin fluctuations and spin decoherence of the one or more electronic spins caused by the electronic spin bath; an optical source configured to generate optical excitation radiation for initialization and readout of the electronic spins in the solid state lattice; an RF source configured to generate RF pulse sequences configured to dynamically decouple the electronic spins from the electronic spin bath and the nuclear spin bath; and a detector configured to detect output optical radiation correlated with the electronic spins, after the electronic spins have been subject to the optical excitation radiation and the RF pulse sequences, so as to detect a variable of interest.