Monolithic integration of a quantum emitter with a compact on-chip beam-splitter

Prtljaga, N.; Coles, R. J.; O’Hara, John; Royall, B.; Clarke, Edmund M.; Fox, A. M.; Skolnick, M. S.

doi:10.1063/1.4883374

Cited by 51 publications

(48 citation statements)

References 17 publications

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“…Using this strategy, an on-chip QD-beam splitter and QD-spin interface have been recently demonstrated. 8,9 On the detection side, a superconducting nanowire located in the evanescent field of a ridge waveguide can be used to detect guided photons with low noise and high efficiency. 10 Despite these promising advances, the tailoring of QD spontaneous emission by ridge waveguides has not yet been investigated experimentally.…”

mentioning

confidence: 99%

Quantum dot spontaneous emission control in a ridge waveguide

Stepanov

Delga

Zang

et al. 2015

Applied Physics Letters

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International audienceWe investigate the spontaneous emission (SE) of self-assembled InAs quantum dots (QDs) embedded in GaAs ridge waveguides that lay on a low index substrate. In thin enough waveguides, the coupling to the fundamental guided mode is vanishingly small. A pronounced anisotropy in the coupling to non-guided modes is then directly evidenced by normal-incidence photoluminescence polarization measurements. In this regime, a measurement of the QD decay rate reveals a SE inhibition by a factor up to 4. In larger wires, which ensure an optimal transverse confinement of the fundamental guided mode, the decay rate approaches the bulk value. Building on the good agreement with theoretical predictions, we infer from calculations the fraction β of SE coupled to the fundamental guided mode for some important QD excitonic complexes. For a charged exciton (isotropic in plane optical dipole), β reaches 0.61 at maximum for an on-axis QD. In the case of a purely transverse linear optical dipole, β increases up to 0.91. This optimal configuration is achievable through the selective excitation of one of the bright neutral excitons

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mentioning

confidence: 99%

Quantum dot spontaneous emission control in a ridge waveguide

Stepanov

Delga

Zang

et al. 2015

Applied Physics Letters

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“…To fully exploit the advantages of integrated photonics, it would be ideal to integrate these different components on a single substrate. Motivated by this, many researchers have recently demonstrated the hybrid integration of different quantum-optical components [103][104][105][106][107][108][109]. Hence, the stage of integrated quantum photonics research is now moving to hybrid integration on a chip.…”

Section: On-chip Quantum Buffermentioning

confidence: 99%

Generation and manipulation of entangled photons on silicon chips

Matsuda

Takesue²

2016

Nanophotonics

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Integrated quantum photonics is now seen as one of the promising approaches to realize scalable quantum information systems. With optical waveguides based on silicon photonics technologies, we can realize quantum optical circuits with a higher degree of integration than with silica waveguides. In addition, thanks to the large nonlinearity observed in silicon nanophotonic waveguides, we can implement active components such as entangled photon sources on a chip. In this paper, we report recent progress in integrated quantum photonic circuits based on silicon photonics. We review our work on correlated and entangled photon-pair sources on silicon chips, using nanoscale silicon waveguides and silicon photonic crystal waveguides. We also describe an on-chip quantum buffer realized using the slow-light effect in a silicon photonic crystal waveguide. As an approach to combine the merits of different waveguide platforms, a hybrid quantum circuit that integrates a silicon-based photon-pair source and a silica-based arrayed waveguide grating is also presented.

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“…An alternative scheme is to use quantum emitters with naturally sub-Poissonian photon statistics within a waveguide circuit made of the emitter's host material. [17][18][19][20] It is also possible to evanescently couple the emitter to a low-loss PIC [21][22][23] and these schemes have verified the emission of single photons. However, for realising large scale and compact circuits, it will be necessary to integrate multiple sources of indistinguishable photons on the chip, as we demonstrate here.…”

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confidence: 99%

Independent indistinguishable quantum light sources on a reconfigurable photonic integrated circuit

Ellis

Bennett

Dangel

et al. 2018

Applied Physics Letters

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We report a compact, scalable, quantum photonic integrated circuit realised by combining multiple, independent InGaAs/GaAs quantum-light-emitting-diodes (QLEDs) with a silicon oxynitride waveguide circuit. Each waveguide joining the circuit can then be excited by a separate, independently electrically contacted QLED. We show that the emission from neighbouring QLEDs can be independently tuned to degeneracy using the Stark Effect and that the resulting photon streams are indistinguishable. This enables on-chip Hong-Ou-Mandel-type interference, as required for many photonic quantum information processing schemes.

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Monolithic integration of a quantum emitter with a compact on-chip beam-splitter

Cited by 51 publications

References 17 publications

Quantum dot spontaneous emission control in a ridge waveguide

Quantum dot spontaneous emission control in a ridge waveguide

Generation and manipulation of entangled photons on silicon chips

Independent indistinguishable quantum light sources on a reconfigurable photonic integrated circuit

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