scholarly journals Splitting efficiency and interference effects in a Cooper pair splitter based on a triple quantum dot with ferromagnetic contacts

2018 ◽  
Vol 97 (19) ◽  
Author(s):  
Kacper Bocian ◽  
Wojciech Rudziński ◽  
Ireneusz Weymann
Keyword(s):  
Quantum Dot ◽  
Cooper Pair ◽  
Interference Effects

scholarly journals Cooper pair splitting in parallel quantum dot Josephson junctions

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
R. S. Deacon ◽  
A. Oiwa ◽  
J. Sailer ◽  
S. Baba ◽  
Y. Kanai ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Cooper Pair ◽  
Josephson Current ◽  
Cooper Pairs ◽  
Electron Pairs ◽  
On Demand ◽  
Non Local ◽  
Local Transport ◽  
Current Flows ◽  
A Current

Abstract Devices to generate on-demand non-local spin entangled electron pairs have potential application as solid-state analogues of the entangled photon sources used in quantum optics. Recently, Andreev entanglers that use two quantum dots as filters to adiabatically split and separate the quasi-particles of Cooper pairs have shown efficient splitting through measurements of the transport charge but the spin entanglement has not been directly confirmed. Here we report measurements on parallel quantum dot Josephson junction devices allowing a Josephson current to flow due to the adiabatic splitting and recombination of the Cooper pair between the dots. The evidence for this non-local transport is confirmed through study of the non-dissipative supercurrent while tuning independently the dots with local electrical gates. As the Josephson current arises only from processes that maintain the coherence, we can confirm that a current flows from the spatially separated entangled pair.

scholarly journals Entanglement-symmetry control in a quantum-dot Cooper-pair splitter

2017 ◽  
Vol 254 (3) ◽  
pp. 1600603 ◽  
Author(s):  
Robert Hussein ◽  
Alessandro Braggio ◽  
Michele Governale
Keyword(s):  
Quantum Dot ◽  
Cooper Pair

Interference effects on bound-to-continuum quantum dot absorption

2010 ◽  
Vol 107 (8) ◽  
pp. 083102 ◽  
Author(s):  
J. Houel ◽  
S. Sauvage ◽  
A. Lemaître ◽  
P. Boucaud
Keyword(s):  
Quantum Dot ◽  
Interference Effects
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