Generating indistinguishable photons from a quantum dot in a noisy environment

doi:10.1103/PhysRevB.95.201410

	Generating indistinguishable photons from a quantum dot in a noisy environment
	Santana, Ted S.1; Ma, Yong 1,3; Malein, Ralph N. E.1; Bastiman, Faebian 2; Clarke, Edmund 2; Gerardot, Brian D.1; Santana, Ted S.4; Ma, Yong 4,6; Malein, Ralph N. E.4; Bastiman, Faebian 5
刊名	PHYSICAL REVIEW B
	2017-05-23
卷号	95 期号:20 页码:6
ISSN号	2469-9950
DOI	10.1103/PhysRevB.95.201410
通讯作者	Gerardot, BD (reprint author), Heriot Watt Univ, Inst Photon & Quantum Sci, SUPA, Edinburgh, Midlothian, Scotland.
英文摘要	Single photons from semiconductor quantum dots are promising resources for linear optical quantum computing, or, when coupled to spin states, quantum repeaters. To realize such schemes, the photons must exhibit a high degree of indistinguishability. However, the solid-state environment presents inherent obstacles for this requirement as intrinsic semiconductor fluctuations can destroy the photon indistinguishability. Here, we demonstrate that resonant excitation of a quantum dot with a narrow-band laser generates near transform limited power spectra and indistinguishable photons from a single quantum dot in an environment with many charge-fluctuating traps. The specificity of the resonant excitation suppresses the excited state population in the quantum dot when it is detuned due to spectral fluctuations. The dynamics of this process lead to flickering of the emission over long time scales (> 5 mu s) and reduces the time-averaged count rates. Nevertheless, in spite of significant spectral fluctuations, high visibility two-photon interference can be achieved. This approach is useful for quantum dots with nearby surface states in processed photonic structures and quantum emitters in emerging platforms, such as two-dimensional semiconductors.
资助项目	EPSRC[EP/I023186/1] ; EPSRC[EP/K015338/1] ; EPSRC[EP/M013472/1] ; EPSRC[EP/G03673X/1] ; ERC[307392] ; Royal Society
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000402004100003
内容类型	期刊论文
源URL	[http://172.16.51.4:88/handle/2HOD01W0/223]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Gerardot, Brian D.; Gerardot, Brian D.
作者单位	1.Heriot Watt Univ, Inst Photon & Quantum Sci, SUPA, Edinburgh, Midlothian, Scotland 2.Univ Sheffield, EPSRC Natl Ctr Technol 3 5, Sheffield, S Yorkshire, England 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.Heriot Watt Univ, Inst Photon & Quantum Sci, SUPA, Edinburgh, Midlothian, Scotland 5.Univ Sheffield, EPSRC Natl Ctr Technol 3 5, Sheffield, S Yorkshire, England 6.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Santana, Ted S.,Ma, Yong,Malein, Ralph N. E.,et al. Generating indistinguishable photons from a quantum dot in a noisy environment[J]. PHYSICAL REVIEW B,2017,95(20):6.
APA	Santana, Ted S..,Ma, Yong.,Malein, Ralph N. E..,Bastiman, Faebian.,Clarke, Edmund.,...&Gerardot, Brian D..(2017).Generating indistinguishable photons from a quantum dot in a noisy environment.PHYSICAL REVIEW B,95(20),6.
MLA	Santana, Ted S.,et al."Generating indistinguishable photons from a quantum dot in a noisy environment".PHYSICAL REVIEW B 95.20(2017):6.