The hybridization of distinct quantum systems has now reached the stage when we can actually engineer the properties of the composite system to be better than the individual parts. One natural application of hybridization is the generation of non-classical states, which are extremely important in emerging quantum technologies such as quantum metrology and sensing. In this presentation we consider the generation of spin squeezed states in a hybrid system composed of a superconducting circuit coupled to a spin ensemble. We show that spin squeezing can be generated by two different mechanisms: one-axis twisting and driven collective relaxation.

© 2016 Optical Society of America

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