arXiv subjects

Y. Rikitake

Publications and source records attributed to Y. Rikitake.

2 recordsLinked to original sources

arXiv2007

Theoretical analysis of the optimal conditions for photon-spin quantum state transfer

We analyzed the yield and fidelity of the quantum state transfer (QST) from a photon polarization qubit to an electron spin qubit in a spin-coherent photo detector consisting of a semiconductor quantum dot. We used a model consisting of the quantum dot, where the QST is carried out, coupled with a photonic cavity. We determined the optimal conditions that allow the realization of both high-yield and high-fidelity QST.

cond-mat.other↗

arXiv2006

Negative Polarization through Photon to Electron Spin Polarization Transfer in GaAs Quantum Wells

We demonstrate negative polarization created by light-hole exciton excitation in g-factor engineered GaAs quantum wells measured by time-resolved Kerr rotation and polarization-resolved photoluminescence. This negative polarization is a result of polarization transfer from a photon to an electron spin mediated by a light hole. This demonstration is an important step towards achieving quantum media conversion from a photonic qubit to an electron spin qubit required for building a quantum repeater.

quant-ph↗