Dynamically controlling the emission of single excitons in photonic crystal cavities

Pagliano, FM Franscesco; Cho, Y YongJin; Xia, Tian; Otten, van Fwm Frank; Johne, R.; Fiore, Andrea

doi:10.1038/ncomms6786

Cited by 38 publications

(29 citation statements)

References 39 publications

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“…The switching time is limited by the large area of the diode used in this work (~0.1mm 2 ). Use of a micro-diode contacting scheme would reduce the RC time constant of the diode and allow GHz frequency modulation of the RF signal 33 . High frequency electrical control can also allow the QD transition to be locked to an external laser to enable generation of frequency-stabilized single photons 34 .…”

Section: Electrically Tunable Resonance Fluorescencementioning

confidence: 99%

Electrical control of nonlinear quantum optics in a nano-photonic waveguide

Hallett¹,

Foster²,

Hurst³

et al. 2018

Optica

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Corresponding author: A. P. Foster: andrew.foster@sheffield.ac.uk † These authors contributed equally to this work. Local control of the generation and interaction of indistinguishable single photons is a key requirement for photonic quantum networks. Waveguide-based architectures, in which embedded quantum emitters act as both highly coherent single photon sources and as nonlinear elements to mediate photon-photon interactions, offer a scalable route to such networks. However, local electrical control of a quantum optical nonlinearity has yet to be demonstrated in a waveguide geometry. Here, we demonstrate local electrical tuning and switching of single photon generation and nonlinear interaction by embedding a quantum dot in a nano-photonic waveguide with enhanced light-matter interaction. A power-dependent transmission extinction as large as 40±2% and clear, voltage-controlled bunching in the photon statistics of the transmitted light demonstrate the single photon character of the nonlinearity. The deterministic nature of the nonlinearity is particularly attractive for the future realization of photonic gates for scalable nano-photonic waveguide-based quantum information processing.

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Section: Electrically Tunable Resonance Fluorescencementioning

confidence: 99%

Electrical control of nonlinear quantum optics in a nano-photonic waveguide

Hallett¹,

Foster²,

Hurst³

et al. 2018

Optica

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“…In order to experimentally assess the response time of our switch, we perform confocal photo-luminescence measurements from the (QD) wetting layer located in the MZI waveguide while driving it with a periodic signal ( Fig. 4(a)) and record the change in the integrated emission spectrum as a function of frequency 32 . This allows to extract a low-pass amplitude characteristic directly without resorting to fast photodiodes or photon counters.…”

Section: B Sub-microsecond Response Timementioning

confidence: 99%

Electro-optic routing of photons from a single quantum dot in photonic integrated circuits

Midolo¹,

Hansén²,

Zhang³

et al. 2017

Opt. Express

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Recent breakthroughs in solid-state photonic quantum technologies enable generating and detecting single photons with near-unity efficiency as required for a range of photonic quantum technologies. The lack of methods to simultaneously generate and control photons within the same chip, however, has formed a main obstacle to achieving efficient multi-qubit gates and to harness the advantages of chip-scale quantum photonics. Here we propose and demonstrate an integrated voltage-controlled phase shifter based on the electro-optic effect in suspended photonic waveguides with embedded quantum emitters. The phase control allows building a compact Mach-Zehnder interferometer with two orthogonal arms, taking advantage of the anisotropic electrooptic response in gallium arsenide. Photons emitted by single self-assembled quantum dots can be actively routed into the two outputs of the interferometer. These results, together with the observed sub-microsecond response time, constitute a significant step towards chip-scale single-photon-source de-multiplexing, fiber-loop boson sampling, and linear optical quantum computing. arXiv:1707.06522v1 [quant-ph]

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“…This indeed calls for switching speeds ultimately on the system's native timescales to enable Landau–Zener non-adiabatic control schemes 8 9 . For example, manipulation via electric fields or all-optical means have been used for switching in nanophotonic circuits 10 11 and cavity quantum electrodynamics studies 12 13 14 .…”

mentioning

confidence: 99%

Dynamic acousto-optic control of a strongly coupled photonic molecule

et al. 2015

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Strongly confined photonic modes can couple to quantum emitters and mechanical excitations. To harness the full potential in quantum photonic circuits, interactions between different constituents have to be precisely and dynamically controlled. Here, a prototypical coupled element, a photonic molecule defined in a photonic crystal membrane, is controlled by a radio frequency surface acoustic wave. The sound wave is tailored to deliberately switch on and off the bond of the photonic molecule on sub-nanosecond timescales. In time-resolved experiments, the acousto-optically controllable coupling is directly observed as clear anticrossings between the two nanophotonic modes. The coupling strength is determined directly from the experimental data. Both the time dependence of the tuning and the inter-cavity coupling strength are found to be in excellent agreement with numerical calculations. The demonstrated mechanical technique can be directly applied for dynamic quantum gate operations in state-of-the-art-coupled nanophotonic, quantum cavity electrodynamic and optomechanical systems.

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Dynamically controlling the emission of single excitons in photonic crystal cavities

Cited by 38 publications

References 39 publications

Electrical control of nonlinear quantum optics in a nano-photonic waveguide

Electrical control of nonlinear quantum optics in a nano-photonic waveguide

Electro-optic routing of photons from a single quantum dot in photonic integrated circuits

Dynamic acousto-optic control of a strongly coupled photonic molecule

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