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Coherently driving a single quantum two-level system with dichromatic laser pulses
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dc.contributor.author | He, Yu-Ming | |
dc.contributor.author | Wang, Hui | |
dc.contributor.author | Wang, Can | |
dc.contributor.author | Chen, M.-C. | |
dc.contributor.author | Ding, Xing | |
dc.contributor.author | Qin, Jian | |
dc.contributor.author | Duan, Z.-C. | |
dc.contributor.author | Chen, Si | |
dc.contributor.author | Li, J.-P. | |
dc.contributor.author | Liu, Run-Ze | |
dc.contributor.author | Schneider, C. | |
dc.contributor.author | Atatüre, Mete | |
dc.contributor.author | Hoefling, Sven | |
dc.contributor.author | Lu, Chao-Yang | |
dc.contributor.author | Pan, Jian-Wei | |
dc.date.accessioned | 2020-01-15T00:35:25Z | |
dc.date.available | 2020-01-15T00:35:25Z | |
dc.date.issued | 2019-07-15 | |
dc.identifier | 258865094 | |
dc.identifier | cef28238-0edf-443c-b9e4-3a5a46c9f7fc | |
dc.identifier | 85069540456 | |
dc.identifier | 000484374000022 | |
dc.identifier.citation | He , Y-M , Wang , H , Wang , C , Chen , M-C , Ding , X , Qin , J , Duan , Z-C , Chen , S , Li , J-P , Liu , R-Z , Schneider , C , Atatüre , M , Hoefling , S , Lu , C-Y & Pan , J-W 2019 , ' Coherently driving a single quantum two-level system with dichromatic laser pulses ' , Nature Physics . https://doi.org/10.1038/s41567-019-0585-6 | en |
dc.identifier.issn | 1745-2473 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1905.00275v1 | |
dc.identifier.uri | https://hdl.handle.net/10023/19282 | |
dc.description | Funding: M.A. is supported by an ERC Consolidator Grant PHOENICS (no. 617985), and the EPSRC Quantum Technology Hub NQIT (EP/M013243/1). | en |
dc.description.abstract | The excitation of individual two-level quantum systems using an electromagnetic field is an elementary tool of quantum optics, with widespread applications across quantum technologies. The efficient excitation of a single two-level system usually requires the driving field to be at the same frequency as the transition between the two quantum levels. However, in solid-state implementations, the scattered laser light can dominate over the single photons emitted by the two-level system, imposing a challenge for single-photon sources. Here, we propose a background-free method for the coherent excitation and control of a two-level quantum system using a phase-locked dichromatic electromagnetic field with no spectral overlap with the optical transition. We demonstrate this method experimentally by stimulating single-photon emission from a single quantum dot embedded in a micropillar, reaching single-photon purity of 0.988(1) and indistinguishability of 0.962(6). The phase-coherent nature of our two-colour excitation scheme is demonstrated by the dependence of the resonance fluorescence intensity on the relative phase between the two pulses. Our two-colour excitation method represents an additional and useful tool for the study of atom–photon interaction, and the generation of spectrally isolated indistinguishable single photons. | |
dc.format.extent | 6 | |
dc.format.extent | 3317170 | |
dc.language.iso | eng | |
dc.relation.ispartof | Nature Physics | en |
dc.subject | QC Physics | en |
dc.subject | TK Electrical engineering. Electronics Nuclear engineering | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.subject.lcc | TK | en |
dc.title | Coherently driving a single quantum two-level system with dichromatic laser pulses | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1038/s41567-019-0585-6 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2020-01-15 |
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