I am going to attempt a definition of consciousness in the context of my question. A conscious system exhibits some awareness of itself which manifests in its behaviour. This definition is universal, so it does not require a living system or any kind of organic structure or function. Self-consciousness in the human sense is unnecessary. Can an experiment be designed which tests the null hypothesis "non-living systems have no consciousness"? Quantum physics throws up situations which suggest consciousness, such as entanglement, which is an emergent property. Consciousness may also be an emergent property.