[15a-501-1~10] 10.4 Semiconductor spintronics, superconductor, multiferroics

▼ [15a-501-8] Electrical detection of nuclear spin-echo signals in an electron spin injection system

〇Zhichao Lin¹, Mahmoud Rasly¹, Tetsuya Uemura¹ (1.Hokkaido Univ.)

Keywords:spin echo, nuclear spin manipulation, quantum bit

Coherent manipulation of nuclear spins in semiconductors by nuclear magnetic resonance (NMR), which is indispensable for implementing solid-state quantum bits (qubits), has been demonstrated through observing the Rabi oscillation and spin-echo signals optically in AlGaAs/GaAs quantum well [1]. Recently we have developed a novel NMR system that uses spin injection from a highly polarized spin source, and detected the Rabi oscillation electrically [2]. The purpose of the present study is to clarify the phase coherence time (T₂) in GaAs through the spin-echo measurement.