Scalable in operando strain tuning in nanophotonic waveguides enabling three-quantum-dot superradiance

Grim, Joel Q.; Bracker, Allan S.; Zalalutdinov, Maxim; Carter, Sam; Kozen, Alexander C.; Kim, Mijin; Kim, Chul Soo; Mlack, Jerome T.; Yakes, Michael K.; Lee, Bumsu; Gammon, D.

doi:10.1038/s41563-019-0418-0

Cited by 128 publications

(87 citation statements)

References 53 publications

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“…Another opportunity is to scale-up the circuit so that one excitation pulse could be pumping multiple QDs in parallel. In order to overcome the spectral inhomogeneity of QDs, such a device will require independent tunability of the different QDs to match the frequency of the excitation pulse 39,40 . With such an approach with the circuit, the benefits of the scalable planar platform will be fully exploited in the ongoing pursuit of scaling up single-photon technology 41 .…”

Section: Discussionmentioning

confidence: 99%

On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source

et al. 2020

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A deterministic source of coherent single photons is an enabling device for quantum information processing. Quantum dots in nanophotonic structures have been employed as excellent sources of single photons with the promise of scaling up towards multiple photons and emitters. It remains a challenge to implement deterministic resonant optical excitation of the quantum dot required for generating coherent single photons, since residual light from the excitation laser should be suppressed without compromising source efficiency and scalability. Here, we present a planar nanophotonic circuit that enables deterministic pulsed resonant excitation of quantum dots using two orthogonal waveguide modes for separating the laser and the emitted photons. We report a coherent and stable single-photon source that simultaneously achieves high-purity (g (2) (0) = 0.020 ± 0.005), high-indistinguishability (V = 96 ± 2%), and >80% coupling efficiency into the waveguide. Such 'plug-and-play' single-photon source can be integrated with on-chip optical networks implementing photonic quantum processors.

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Section: Discussionmentioning

confidence: 99%

On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source

et al. 2020

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“…We show in Fig.2d that our device is compatible with the use of electrical Starktuning, to control the wavelength of individual QD transitions. This is of particular interest for extending recent demonstrations of few-QD interactions in waveguide QED [30,31] to the chiral regime supported by topological interfaces. Furthermore, we employ a Hanbury Brown and Twiss measurement to show clear single photon emission from a QD in the topological waveguide (see Fig.2e), with a g (2) (0) value of 0.09 ± 0.08 (after deconvolution of the instrument response).…”

Section: A Topological Waveguide Operationmentioning

confidence: 94%

Chiral topological photonics with an embedded quantum emitter

Mehrabad¹,

Foster²,

Dost³

et al. 2020

Optica

110

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“…On the other hand, waveguide architectures that can couple light into and out of remotely located quantum emitters could be ideal. Such a platform offers high extraction efficiency, significant Purcell enhancement, charge control, the ability for local strain tuning, and the freedom to guide light anywhere on chip to and from randomly positioned QDs [20,21]. However, the generation of high-visibility two-photon interference from remote QDs is a significant challenge to be met in all approaches [60][61][62].…”

Section: Discussion and Outlookmentioning

confidence: 99%

“…Visions of fully integrated quantum photonic chips, which require on-demand indistinguishable single-photon generation integrated on chip with low-loss directional couplers, phase shifters, filters, and singlephoton detectors, have been presented [1][2][3][4]. On-chip integration of solid-state emitters such as color centers in diamond [5][6][7][8], molecules [9,10], two-dimensional materials [11][12][13][14], and III-V semiconductor quantum dots (QDs) [15][16][17][18][19][20][21], are particularly promising for these applications. As solid-state emitters reach maturity, the next logical step is to interface these sources with larger quantum photonic architectures to promote the scalability and realization of multipartite quantum-information protocols [22].…”

Section: Introductionmentioning

confidence: 99%

Multiplexed Single Photons from Deterministically Positioned Nanowire Quantum Dots

et al. 2020

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Solid-state quantum emitters are excellent sources of on-demand indistinguishable or entangled photons and can host long-lived spin memories, crucial resources for photonic quantum-information applications. However, their scalability remains an outstanding challenge. Here, we present a scalable technique to multiplex streams of photons from multiple independent quantum dots, on chip, into a fiber network for use "off chip." Multiplexing is achieved by incorporating a multicore fiber into a confocal microscope and spatially matching the multiple foci, seven in this case, to quantum dots in an array of deterministically positioned nanowires. As a proof-of-principle demonstration, we perform parallel spectroscopy on the nanowire array to identify two nearly identical quantum dots at different positions, which are subsequently tuned into resonance with an external magnetic field. Multiplexing of background-free single photons from these two quantum dots is then achieved. Our approach, applicable to all types of quantum emitters, can readily be integrated into scalable photonic based quantum technologies.

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Scalable in operando strain tuning in nanophotonic waveguides enabling three-quantum-dot superradiance

Cited by 128 publications

References 53 publications

On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source

On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source

Chiral topological photonics with an embedded quantum emitter

Multiplexed Single Photons from Deterministically Positioned Nanowire Quantum Dots

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