TY - JOUR
T1 - Single-Shot Ternary Readout of Two-Electron Spin States in a Quantum Dot Using Spin Filtering by Quantum Hall Edge States
AU - Kiyama, H.
AU - Nakajima, T.
AU - Teraoka, S.
AU - Oiwa, A.
AU - Tarucha, S.
N1 - Funding Information:
We thank Y. Tokura for fruitful discussions. This work was supported by Grant-in-Aid for Young Scientists B (No. 15K17681, No. 25790006), Grants-in-Aid for Scientific Research A (No. 25246005, No. 16H02204) and S (No. 26220710), Innovative Areas Nano Spin Conversion Science (No. 26103004), MEXT Project for Developing Innovation Systems, QPEC, the University of Tokyo, CREST, Japan Science and Technology Agency (JST), and ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan), RIKEN Incentive Research Project, Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials from MEXT.
Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/11/29
Y1 - 2016/11/29
N2 - We report on the single-shot readout of three two-electron spin states - a singlet and two triplet substates - whose z components of spin angular momentum are 0 and +1, in a gate-defined GaAs single quantum dot. The three spin states are distinguished by detecting spin-dependent tunnel rates that arise from two mechanisms: spin filtering by spin-resolved edge states and spin-orbital correlation with orbital-dependent tunneling. The three states form one ground state and two excited states, and we observe the spin relaxation dynamics among the three spin states.
AB - We report on the single-shot readout of three two-electron spin states - a singlet and two triplet substates - whose z components of spin angular momentum are 0 and +1, in a gate-defined GaAs single quantum dot. The three spin states are distinguished by detecting spin-dependent tunnel rates that arise from two mechanisms: spin filtering by spin-resolved edge states and spin-orbital correlation with orbital-dependent tunneling. The three states form one ground state and two excited states, and we observe the spin relaxation dynamics among the three spin states.
UR - http://www.scopus.com/inward/record.url?scp=84999268338&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84999268338&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.117.236802
DO - 10.1103/PhysRevLett.117.236802
M3 - Article
AN - SCOPUS:84999268338
VL - 117
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 23
M1 - 236802
ER -