Single-photon source and method of outputting single photon
AssigneeRohm Co., Ltd.
InventorsFumiya NAGASAWA, Hiroshi SEKIGUCHI, Yoshinori MIYAMAE, Koji TANIUCHI
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Abstract
A single-photon source includes a substrate of a wide-bandgap semiconductor provided with a light-emission region including only one target point detect, a cover mask arranged on a main surface of the substrate and having an opening to which the light-emission region in the substrate is exposed, and an excitation system configured to shift an electron in a defect-ground state to an excited state at the point defect in the light-emission region. A single photon released from the point defect in the light-emission region when the electron in the excited state is shifted to the ground state is output through the opening in the cover mask.
Claims10
A single-photon source comprising:
- a substrate of a wide-bandgap semiconductor provided with a light-emission region including only one target point detect;
- a cover mask arranged on a main surface of the substrate and having an opening to which the light-emission region in the substrate is exposed;
- and
- an excitation system configured to shift an electron in a defect-ground state to an excited state at the point defect in the light-emission region,
- wherein a single photon released from the point defect in the light-emission region when the electron in the excited state is shifted to the ground state is output through the opening in the cover mask.
A method of outputting a single photon, comprising:
- forming a light-emission region including only one target point defect in a substrate of a wide-bandgap semiconductor;
- arranging a cover mask having an opening on a main surface of the substrate so as to expose the light-emission region in the substrate to the opening;
- shifting an electron in a defect-ground state to an excited state at the point defect in the light-emission region;
- and
- outputting a single photon released from the point defect in the light-emission region through the opening in the cover mask when the electron in the excited state is shifted to the ground state.
Dependencies are inferred from the claim text.