Single photon response in GaAs quantum transport devices for photon‐spin quantum state transfer
Takeshi Kutsuwa, K. Arai, H. Shigyo, H. Kinjo, Keiji Ono, Yasuyoshi Mitsumori, Hideo Kosaka, Keiichi Edamatsu · Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics · 2006
Quantum information can be stored and manipulated by an electron spin if its state was faithfully transferred from messenger photon qubit. Such a quantum state transfer needs to have a function of conversion from photon polarization to electron spin state and flagging the safe conversion without destroying the spin state. We have achieved single photon response by using a quantum dot as an electron trap and a quantum point contact as a charge sensor on GaAs/AlGaAs-based modulation doped structure. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)