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arXiv · 1506.06549

Topological quantum phase transition of light

Chandan GN·N. Banerjee·Sujit Sarkar
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Abstract

We study theoretically the topological quantum phase transition in Cavity QED lattice. We predict the condition for non-topological phase to the topological phase transition conditions for three different model Hamiltonians in cavity QED lattice. We study these topological quantum phase transition through winding number, which is a topological invariant quantity. We argue that the appearance of topological phase in these systems where the discrete Z 2 symmetry broken. We show that the non-topological state is the vacuum state of the system where each cavity contains fermionic type excitations from light-matter interaction whereas the topological state of system contains Majorana modes of excitations at the end cavity of the lattice.

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Chandan GN, N. Banerjee, Sujit Sarkar. 2015-06-22. Topological quantum phase transition of light. https://arxiv.org/abs/1506.06549

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