[25p-71B-1~13] 10.4 Spintronics in semiconductor, topological material, superconductor, and multiferroics

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)English Presentation

[25p-71B-7] Flying Qubit on the Integer Quantum Hall Edge States

Takase Shimizu¹, Akira Endo², Masayuki Hashisaka², Taketomo Nakamura³, Jun-ichiro Ohe⁴, Eiki Iyoda⁵, 〇Shingo Katsumoto⁶, Micho Kumada¹ (1.NTT BRL, 2.ISSP, Univ. Tokyo, 3.Fukuoka Inst. Tech., 4.Toho Univ., 5.Tokai Univ., 6.Tokyo City Univ.)

Keywords:

spin qubit,quantum Hall edge states,non-adiabatic transition

We introduce a method for quantum manipulation of electron spin using nonadiabatic quantum transitions when an electron wave packet propagates through a spin-split integer quantum Hall edge state. In unitary transformation, we present a method and simulation for rotating the zenith angle over the entire range by increasing non-adiabaticity. At that time, we show that the coherence length reaches 200 μm. Furthermore, when decoherence occurs due to a finite bias, we will show the oscillations that occur for the bias and their causes.