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Universal fine-stru...
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Fognini, A.Delft Univ Technol, Kavli Inst Nanosci Delft, NL-2628 CJ Delft, Netherlands.
(författare)
Universal fine-structure eraser for quantum dots
- Artikel/kapitelEngelska2018
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OPTICAL SOC AMER,2018
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LIBRIS-ID:oai:DiVA.org:kth-235579
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235579URI
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https://doi.org/10.1364/OE.26.024487DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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QC 20181001
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We analyze the degree of entanglement measurable from a quantum dot via the biexciton-exciton cascade as a function of the exciton fine-structure splitting and the detection time resolution. We show that the time-energy uncertainty relation provides means to measure a high entanglement even in presence of a finite fine-structure splitting when a detection system with high temporal resolution is employed. Still, in many applications it would be beneficial if the fine-structure splitting could be compensated to zero. To solve this problem, we propose an all-optical approach with rotating waveplates to erase this fine-structure splitting completely which should allow obtaining a high degree of entanglement with near-unity efficiency. Our optical approach is possible with current technology and is also compatible with any quantum dot showing fine-structure splitting. This bears the advantage that for example the fine-structure splitting of quantum dots in nanowires and micropillars can be directly compensated without the need for further sample processing.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Ahmadi, A.Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada.;Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada.
(författare)
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Daley, S. J.Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada.;Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada.
(författare)
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Reimer, M. E.Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada.;Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada.
(författare)
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Zwiller, VKTH,Albanova VinnExcellence Center for Protein Technology, ProNova,Tillämpad fysik,Delft Univ Technol, Kavli Inst Nanosci Delft, NL-2628 CJ Delft, Netherlands.(Swepub:kth)u1ummq2v
(författare)
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Delft Univ Technol, Kavli Inst Nanosci Delft, NL-2628 CJ Delft, Netherlands.Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada.;Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada.
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Optics Express: OPTICAL SOC AMER26:19, s. 24487-244961094-4087
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