| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2017: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Outline of Final Research Achievements |
We investigated the interaction between a quantum dot and degenerate quadrupole cavity modes in a H1-type photonic crystal nanocavity theoretically and numerically. We demonstrated that the spin state of electron in the quantum dot and the optical vortex with the orbital angular momentum of |l|=1 can be mutually converted in the case that the quantum dot is located at an appropriate position within the cavity. We also proposed a scheme to generate Poincare beams, whose polarization distribution is characterized by a skyrmion number, from a ring resonator. In this scheme, it is possible to change the sign of the skyrmion number depending on the spin state of the quantum dot.
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