The readout of quantum states is part of any quantum information proces- sor and the question of a quantum measurement is a central one in quantum mechanics. In Project 1 we focus on quantum sensing - that is the development of well characterized quantum systems that will be used to probe either ultra-weak classical fields or complex quantum systems. Single qubits or oscillators designed and perfected to have ultra-long coherence times can be extremely sensitive to small electric or magnetic fields. QSIT researchers will use cutting-edge nano-technology to fully exploit the power of systems such as nano-mechanical oscil lators or nitrogen-vacancy (NV) centers in diamond, to engineer ultimate ”quantum meters“.