Towards measurement of coherence in a correlated system using Qubits.

The technology that enables our lives is underpinned by our understanding of condensed matter systems, which describes the behaviour of 10²³ electrons. The classical limit of such systems is predicated upon fundamental quantum states and consequently, significant effort is spent exploring the quantum properties to enhance our understanding, look for emergent quantum behaviour and deliver future industrial output. However, a significant weakness exists in our ability to probe directly these fundamental quantum fluctuations and coherence in bulk systems. To overcome this weakness, we propose to couple magnetic properties of a bulk condensed matter systems to a qubit via a cavity. We will be able to prepare coherent and entangled states in the qubit and measure directly the decoherence of the magnetic state in question. This submission explores the concepts behind quantum transduction of a magnetic system and provides a basic methodology.