I think this theory doesn't hold up too will as the proposed quantum particles would interact with any information storing device. We can replicate a small section of the brain and then, these quantum particles exitons, should interact giving us an objective measure of subjective experience. So far we don't need such extra particles so maybe, subjective experience doesn't need an exterior quantum field.

https://www.sciencedirect.com/science/article/pii/S0306987718313355#f0005