Macroscopic quantum states in quantum optics

Lead Research Organisation: Imperial College London
Department Name: Dept of Physics


This PhD will theoretically investigate "large" quantum states using the tools of quantum optics. Such macroscopic quantum states are needed for quantum information and sensing applications. Key current challenges/questions include: How can such states be efficiently prepared? How do they decohere? How can we then protect such states from decoherence? What advantages does macroscopic quantum states enable, e.g. how can these states best be exploited for quantum sensing applications? This PhD will explore all of these questions with a general framework for bosonic systems and can be applied to various experimental platforms including quantum photonics, cold atoms, and quantum optomechanics. A key step will be to explore and apply macroscopicity measures to such states and explore the connection between macroscopicity and nonclassicality. This work will support new experimental efforts at Imperial, and also across the globe, to develop new quantum technologies such as quantum-enhanced weak force sensing.


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Clarke J (2018) Growing macroscopic superposition states via cavity quantum optomechanics in Quantum Science and Technology

Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/R512540/1 01/10/2017 30/09/2021
2008468 Studentship EP/R512540/1 01/12/2017 31/05/2021 Jack Clarke