Sensing at the quantum limit Seminar

Quantum correlated probes have the potential to achieve enhanced precision in a range of measurements. A crucial advantage of such quantum-enhanced schemes is that they provide high precision with low particle flux. This is an important requirement for many applications such as biological sensing, where disturbing the system can damage the sample, or gravitational wave detection, where the lasers in the interferometer interact with the mirrors enough to degrade the measurement. This means that quantum effects may enable measurements that would not otherwise be possible. In this talk I will give a general overview of quantum metrology and highlight what it can and cannot achieve. I will highlight the role of inter and intra-mode correlations and present some schemes that may be able to realise real advantages in practical scenarios even with small particle numbers.