Entangling one polariton with a photon: effect of interactions on a single-polariton quantum state

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 simulate quantum optics Hamiltonians [25]. Along this line, a few reports have brought initial evidences [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 exciton-polariton networks through inverse four-wave mixing

“…As systems of nonlinear interacting bosons, they have often been suggested as potential candidates of quantum simulators [8,9] and indeed the minimization of the energy of a particular Hamiltonian on a graph was a problem considered recently [10]. While the majority of studies of exciton-polaritons have been restricted to the classical regime [11,12], the quantum nature of polaritons has received revived attention recently [13]. Therefore, it is natural to question whether exciton-polaritons can be used to form lattices of entangled modes.…”