1. The Graduate University for Advanced Studies (SOKENDAI), Hayama, Kanagawa 240-0193, Japan
2. SORST Research Team for Interacting Carrier Electronics, Japan
3. NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
4. CREST Research Team for Photonic Quantum Information, Japan