First observation of the quantized exciton-polariton field and effect of interactions on a single polariton

Abstract

Polaritons reach the quantum limit, providing a new and promising platform of strongly coherent and interacting particles.

Nonclassical statistics from a polaritonic Josephson junction

“…The next milestone is the experimental demonstration of purely nonclassical effects in semiconductor microcavities [21], such as the polariton blockade [22], entanglement generation [23], nonclassical statistics [24], or the possibility to simulate quantum optics Hamiltonians [25]. Along this line, a few reports have brought initial evidence [26][27][28][29] of a quantum regime, and quantum measurements are still the focus of a number of experimental investigations [30][31][32]. The main limitation in the quest for nonclassical polariton states under standard driving resides in the dominant classical character of the polariton field, at the field amplitudes required to overcome the noise and dephasing characterizing semiconductor-based structures.…”

Quantum Neuromorphic Platform for Quantum State Preparation

“…For physical implementation of our scheme, exciton polaritons in planar microcavities have shown to form interconnected networks [28][29][30][31] and also to reach the quantum nonlinear regime [23,32]. It can also be implemented in other systems, like arrays of quantum dots, trapped ions and atoms, nonlinear optical cavities, and networks of superconducting qubits where classical optical sources can interact with quantum nonlinear systems to generate quantized output fields.…”

Polariton panorama

“…The quest for Bose-Einstein condensation of microcavity polaritons has produced a stream of breakthrough results [54,55] (see also exciton polaritons and their condensates). Microcavity exciton polaritons display quantum effects including entanglement [56] and polariton blockade [57,58] and may serve as a platform for the implementation of qubits [59].…”