Nuclear spin readout in a cavity-coupled hybrid quantum dot-donor system
- URL: http://arxiv.org/abs/2012.01322v2
- Date: Mon, 17 May 2021 12:56:12 GMT
- Title: Nuclear spin readout in a cavity-coupled hybrid quantum dot-donor system
- Authors: Jonas Mielke, Jason R. Petta, Guido Burkard
- Abstract summary: Nuclear spins show long coherence times and are well isolated from the environment.
We present a method for nuclear spin readout by probing the transmission of a microwave resonator.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Nuclear spins show long coherence times and are well isolated from the
environment, which are properties making them promising for quantum information
applications. Here, we present a method for nuclear spin readout by probing the
transmission of a microwave resonator. We consider a single electron in a
silicon quantum dot-donor device interacting with a microwave resonator via the
electric dipole coupling and subjected to a homogeneous magnetic field and a
transverse magnetic field gradient. In our scenario, the electron spin
interacts with a $^{31}\mathrm{P}$ defect nuclear spin via the hyperfine
interaction. We theoretically investigate the influence of the P nuclear spin
state on the microwave transmission through the cavity and show that nuclear
spin readout is feasible with current state-of-the-art devices. Moreover, we
identify optimal readout points with strong signal contrast to facilitate the
experimental implementation of nuclear spin readout. Furthermore, we
investigate the potential for achieving coherent excitation exchange between a
nuclear spin qubit and cavity photons.
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