Journal
PHYSICAL REVIEW LETTERS
Volume 117, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.236802
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Funding
- MEXT [15K17681, 25790006, 25246005, 16H02204, 26220710, 26103004]
- QPEC
- University of Tokyo
- CREST
- Japan Science and Technology Agency (JST)
- Council for Science, Technology and Innovation (Cabinet Office, Government of Japan)
- MEXT
- Grants-in-Aid for Scientific Research [25246005, 15K17681, 26103004, 26220710, 16H02204] Funding Source: KAKEN
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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.
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