Reconfigurable quantum metamaterials

Abstract

By coupling controllable quantum systems into larger structures we introduce the concept of a quantum metamaterial. Conventional meta-materials represent one of the most important frontiers in optical design, with applications in diverse fields ranging from medicine to aerospace. Up until now however, metamaterials have themselves been classical structures and interact only with the classical properties of light. Here we describe a class of dynamic metamaterials, based on the quantum properties of coupled atom-cavity arrays, which are intrinsically lossless, reconfigurable, and operate fundamentally at the quantum level. We show how this new class of metamaterial could be used to create a reconfigurable quantum superlens possessing a negative index gradient for single photon imaging. With the inherent features of quantum superposition and entanglement of metamaterial properties, this new class of dynamic quantum metamaterial, opens a new vista for quantum science and technology.

Microwave photonics with Josephson junction arrays: Negative refraction index and entanglement through disorder

“…Following Ref. 46 both constraints may be solved by inspecting the dispersion relation in a contour plot [ Fig. 4(b)].…”

“…Working in the single polariton subspace, it is possible to derive the dispersion relation for those artificial photons 46 and model the array as an effective photonic material. For a similar band structure and interface to the one shown in Fig.…”

Effects of lasing in a one-dimensional quantum metamaterial

“…The totality of points (i)-(iii) makes a quantum metamaterial a qualitatively different system, with a number of unusual properties and applications. In particular, a bifocal superlens [4] and quantum phase-sensitive antennas [8] were predicted.…”

Quantum metamaterial without local control

“…11 as an array of superconducting charge qubits placed inside a transmission line; the extensions to other implementations, including those in optical range, soon followed. [15][16][17][18][19][20][21][22][23] In particular, experiments on a flux qubit inside a transmission line reproduced a number of atomic spectroscopy effects. 24 Aside from the specific properties following from quantum metamaterial being an extended quantum system, it is also a medium with an optical response, which can be changed at will without changing its microstructure; such media are a focus of strong research effort.…”