How quantum correlations change the quantum world we see?
Quantum correlations or nonclassical correlations manifest one of the deciding mechanisms in many intriguing quantum phenomena, either static or dynamical. We are sure in an awkward position when we want to study quantum systems by exploring its full capacity of Hilbert space, and so we take a peek through finite-order quantum correlations. Yet sufficient, we try to reveal its validity and essence in several controllable setups we propose. Quantum interface as light-matter interacting platform can serve pretty well to this purpose.
I particularly focus on revealing the essence of quantum correlations in laser cooling using chiral quantum interface, in quantum heat engine, and in collective light scattering. A recent work on dark-state sideband cooling tells more along this line.