2016
DOI: 10.1038/ncomms11183
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Chirality of nanophotonic waveguide with embedded quantum emitter for unidirectional spin transfer

Abstract: Scalable quantum technologies may be achieved by faithful conversion between matter qubits and photonic qubits in integrated circuit geometries. Within this context, quantum dots possess well-defined spin states (matter qubits), which couple efficiently to photons. By embedding them in nanophotonic waveguides, they provide a promising platform for quantum technology implementations. In this paper, we demonstrate that the naturally occurring electromagnetic field chirality that arises in nanobeam waveguides lea… Show more

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Cited by 283 publications
(287 citation statements)
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“…The associated directional coupling has been observed experimentally in both dielectric [21][22][23][24][25][26][27][28][29][30][31] and plasmonic nanostructures [32][33][34][35] by coupling both classical [24-26, 30, 32-35] and quantum [21-23, 27-29, 31] emitters to the confined light fields. The robustness of the chiral points against unavoidable fabrication imperfections in photonic-crystal waveguides has been assessed [31,36] and chiral coupling is a well characterized and robust phenomenon, which is readily implementable in a range of applications. Figure 3 presents a selection of nanophotonic devices featuring chiral coupling, including atoms in the vicinity of tapered optical fibers and microresonators (Fig.…”
Section: Physics Of Nanophotonic Devicesmentioning
confidence: 99%
See 1 more Smart Citation
“…The associated directional coupling has been observed experimentally in both dielectric [21][22][23][24][25][26][27][28][29][30][31] and plasmonic nanostructures [32][33][34][35] by coupling both classical [24-26, 30, 32-35] and quantum [21-23, 27-29, 31] emitters to the confined light fields. The robustness of the chiral points against unavoidable fabrication imperfections in photonic-crystal waveguides has been assessed [31,36] and chiral coupling is a well characterized and robust phenomenon, which is readily implementable in a range of applications. Figure 3 presents a selection of nanophotonic devices featuring chiral coupling, including atoms in the vicinity of tapered optical fibers and microresonators (Fig.…”
Section: Physics Of Nanophotonic Devicesmentioning
confidence: 99%
“…5 a for a photonic-crystal waveguide. Directional emission has been observed experimentally with a range of different types of emitters embedded in various photonic nanostructures [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35].…”
Section: Chiral Light-matter Interactionmentioning
confidence: 99%
“…This could be achieved by unidirectional couplers in the laboratory or, as already commented in Part I 5 , by using chiral waveguides to assemble the whole architecture compactly on the same chip. 52,53 It could also be possible to use a highy directional source of excitations. 54 A schematic representation is shown in Fig.…”
Section: A Driving the Cascaded Spsmentioning
confidence: 99%
“…For the optimized design in Supplementary Note 6, efficiency > 90 % could potentially be achieved. We note that the source here is symmetric, so emission is in either ±z direction; unidirectional emission can potentially be implemented with an end-mirror or through chiral coupling [30][31][32] . We furthermore emphasize that the light-matter interaction geometry can take the form of any waveguide-based geometry, such as 1D photonic crystal cavities, or waveguide-coupled microring or microdisk resonators (see below and Supplementary Note 7 for examples), which may provide high β through Purcell enhancement.…”
Section: Resultsmentioning
confidence: 99%