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arXiv · 1505.07997

Mott insulator-superfluid phase transition in a detuned multi-connected Jaynes-Cummings lattice

Kangjun Seo·Lin Tian
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Abstract

The connectivity and tunability of superconducting quantum devices provide a rich platform to build quantum simulators and study novel many-body physics. Here we study quantum phase transition in a detuned multi-connected Jaynes-Cummings lattice, which can be constructed with superconducting circuits. This model is composed of alternatively connected qubits and cavity modes. Using a numerical method, we show that by varying the detuning between the qubits and the cavities, a phase transition from the superfluid phase to the Mott insulator phase occurs at commensurate fillings in a one-dimensional array. We study the phase transition in lattices with symmetric and asymmetric couplings, respectively.

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Kangjun Seo, Lin Tian. 2015-05-29. Mott insulator-superfluid phase transition in a detuned multi-connected Jaynes-Cummings lattice. https://doi.org/10.1007/s11433-015-5660-0

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