Non-empty quantum dot as a spin-entangler
Keyword(s):
We consider a three-port single-level quantum dot system with one input and two output leads. Instead of considering an empty dot, we study the situations that two input electrons co-tunnel through the quantum dot occupied by one or two dot electrons. We show that electron entanglement can be generated via the co-tunneling processes when the dot is occupied by two electrons, yielding non-local spin-singlet states at the output leads. When the dot is occupied by a single electron, we show that by carefully selecting model parameters non-local spin-triplet electrons can also be obtained at the output leads if the final dot electron has the same spin as that of the initial dot electron.
Keyword(s):
2008 ◽
Vol 40
(5)
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pp. 1637-1639
Keyword(s):
2002 ◽
Vol 57
(12)
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pp. 919-924
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1998 ◽
Vol 253
(1-2)
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pp. 96-102
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Keyword(s):
2002 ◽
Vol 57
(5)
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pp. 209-214
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Keyword(s):
1978 ◽
Vol 39
(C6)
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pp. C6-481-C6-483
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2001 ◽
Vol 90
(12)
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pp. 6151-6155
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