Chirality of nanophotonic waveguide with embedded quantum emitter for unidirectional spin transfer.

ABSTRACT: Scalable quantum technologies may be achieved by faithful conversion between matter qubits and photonic qubits in integrated circuit geometries. Within this context, quantum dots possess well-defined spin states (matter qubits), which couple efficiently to photons. By embedding them in nanophotonic waveguides, they provide a promising platform for quantum technology implementations. In this paper, we demonstrate that the naturally occurring electromagnetic field chirality that arises in nanobeam waveguides leads to unidirectional photon emission from quantum dot spin states, with resultant in-plane transfer of matter-qubit information. The chiral behaviour occurs despite the non-chiral geometry and material of the waveguides. Using dot registration techniques, we achieve a quantum emitter

SUBMITTER: Coles RJ 

PROVIDER: S-EPMC4821884 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature