[16p-A403-1~20] 13.5 Semiconductor devices/ Interconnect/ Integration technologies

[16p-A403-3] [The 14th Silicon Technology Division Paper Award Speech] Quantum Non-demolition Readout of a Silicon Spin Qubit

〇Jun Yoneda¹, Kenta Takeda², Akito Noiri², Takashi Nakajima², Sen Li², Jun Kamioka¹, Tetsuo Kodera¹, Seigo Tarucha² (1.Tokyo Inst. of Tech., 2.RIKEN)

Keywords:silicon qubits, electron spin, quantum non-demolition readout

Electron spin qubits in silicon quantum dots are a promising platform for future large-scale quantum computation with demonstrated long quantum coherence times and high-fidelity quantum operations. In this paper, we realize quantum non-demolition (QND) readout of a silicon electron spin qubit. The QND readout is an ideal projective measurement that does not introduce, within the limits imposed by quantum theory, a back action on the measured spin polarization and will be an essential element in future qubit error detection and correction protocols.