scholarly journals Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton

2022 ◽  
Vol 105 (4) ◽  
Author(s):  
Tom Praschan ◽  
Dirk Heinze ◽  
Dominik Breddermann ◽  
Artur Zrenner ◽  
Andrea Walther ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Pulse Shaping ◽  
On Demand

Photons on demand from an electrically driven single quantum dot under pulsed excitation

2012 ◽  
Author(s):  
Matthias Florian ◽  
Paul Gartner ◽  
Christopher Gies ◽  
Frank Jahnke ◽  
Christian Kessler ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Single Quantum ◽  
Pulsed Excitation ◽  
On Demand ◽  
Single Quantum Dot

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 Strain-Tunable GaAs Quantum Dot: A Nearly Dephasing-Free Source of Entangled Photon Pairs on Demand

2018 ◽  
Vol 121 (3) ◽  
Author(s):  
Daniel Huber ◽  
Marcus Reindl ◽  
Saimon Filipe Covre da Silva ◽  
Christian Schimpf ◽  
Javier Martín-Sánchez ◽  
...  
Keyword(s):  
Quantum Dot ◽  
On Demand ◽  
Photon Pairs ◽  
Entangled Photon Pairs ◽  
Gaas Quantum Dot
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