Compact acousto-optic multimode interference device in (Al,Ga)As

Bühler, Dominik D.; Crespo-Poveda, Antonio; Tahraoui, A.; Biermann, K.; Santos, P. V.; Cantarero, A.; Lima, M. M. de

doi:10.1364/oe.400400

Cited by 1 publication

(1 citation statement)

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“…Moreover, they can be combined with static electric field 81 , 108 or stressors 109 tuning to dissimilar QDs could be tuned into resonance to create multi-qubit systems. The integration density can be increased for instance by implementing a phase gate in a single MMI 110 and multi-port MMIs enable phased-array wavelength-division multiplexing 111 .…”

Section: Discussionmentioning

confidence: 99%

On-chip generation and dynamic piezo-optomechanical rotation of single photons

et al. 2022

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Integrated photonic circuits are key components for photonic quantum technologies and for the implementation of chip-based quantum devices. Future applications demand flexible architectures to overcome common limitations of many current devices, for instance the lack of tuneabilty or built-in quantum light sources. Here, we report on a dynamically reconfigurable integrated photonic circuit comprising integrated quantum dots (QDs), a Mach-Zehnder interferometer (MZI) and surface acoustic wave (SAW) transducers directly fabricated on a monolithic semiconductor platform. We demonstrate on-chip single photon generation by the QD and its sub-nanosecond dynamic on-chip control. Two independently applied SAWs piezo-optomechanically rotate the single photon in the MZI or spectrally modulate the QD emission wavelength. In the MZI, SAWs imprint a time-dependent optical phase and modulate the qubit rotation to the output superposition state. This enables dynamic single photon routing with frequencies exceeding one gigahertz. Finally, the combination of the dynamic single photon control and spectral tuning of the QD realizes wavelength multiplexing of the input photon state and demultiplexing it at the output. Our approach is scalable to multi-component integrated quantum photonic circuits and is compatible with hybrid photonic architectures and other key components for instance photonic resonators or on-chip detectors.

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