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Title: Dynamic control of photon lifetime for quantum random number generation

In a passive cavity geometry, there exists a trade-off between resonant enhancement and response time, which is inherently limited by the cavity photon lifetime. We demonstrate frequency-selective, dynamic control of the photon lifetime using a silicon-nitride coupled-ring resonator. The photon lifetime is tuned by controlling an avoided mode crossing using thermo-optic tuning of the cavity resonance with integrated heaters. Using this effect, we achieve fast turn-on/off of aχ<#comment/>(3)degenerate optical parametric oscillator (DOPO) and on-chip true random number generation. Our approach allows us to overcome theQ-limited generation rate of a single-ring-based DOPO and offers a path toward the development of a scalable integrated high-quality entropy source for modern cryptographic systems.

 
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NSF-PAR ID:
10307110
Author(s) / Creator(s):
; ; ; ; ;
Publisher / Repository:
Optical Society of America
Date Published:
Journal Name:
Optica
Volume:
8
Issue:
11
ISSN:
2334-2536
Page Range / eLocation ID:
Article No. 1458
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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