Zero-power calibration of photonic circuits at cryogenic temperatures
- URL: http://arxiv.org/abs/2105.04721v1
- Date: Tue, 11 May 2021 00:22:41 GMT
- Title: Zero-power calibration of photonic circuits at cryogenic temperatures
- Authors: Ben M. Burridge, Gerardo E. Villarreal-Garcia, Antonio A. Gentile,
Pisu Jiang, Jorge Barreto
- Abstract summary: We present a way to reversibly fine-tune the optical properties of individual waveguide structures using solidified xenon.
This work paves the way towards the integration of compact, reconfigurable photonic circuits alongside superconducting detectors, devices, or otherwise.
- Score: 0.0
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- Abstract: The continual success of superconducting photon-detection technologies in
quantum photonics asserts cryogenic-compatible systems as a cornerstone of full
quantum photonic integration. Here, we present a way to reversibly fine-tune
the optical properties of individual waveguide structures through local changes
to their geometry using solidified xenon. Essentially, we remove the need for
additional on-chip calibration elements, effectively zeroing the power
consumption tied to reconfigurable elements, with virtually no detriment to
photonic device performance. We enable passive circuit tuning in
pressure-controlled environments, locally manipulating the cladding thickness
over portions of optical waveguides. We realize this in a cryogenic
environment, through controlled deposition of xenon gas and precise tuning of
its thickness using sublimation, triggered by on-chip resistive heaters. $\pi$
phase shifts occur over a calculated length of just $L_{\pi}$ = 12.3$\pm$0.3
$\mu m$. This work paves the way towards the integration of compact,
reconfigurable photonic circuits alongside superconducting detectors, devices,
or otherwise.
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