Photonic Quasicrystals for Nonlinear Quantum Optics

Farhan Bin Tarik, Azadeh Famili, Yingjie Lao +1 more

We report the first optical physical unclonable function designed for robustness against fluctuations in optical angular/spatial alignment, polarization, and temperature, and introduce silicon photonic quasicrystal interferometry for secure hardware applications.

Kazuaki Sakoda

Farhan Bin Tarik, Derrick Joyce, Yingjie Lao +1 more

Motivated by cryptographic applications seeking enhanced reliability and security, we demonstrate physically unclonable photonic circuits based on active quasicrystal interferometers with integrated micro-heaters. Small changes in electrical stimuli are shown to produce distinct optical fingerprints.

Liang-Jun He, Fabian Maucher, Yong-Chang Zhang

Quasicrystals emerge from competing interactions with incommensurate characteristic length scales that inhibit translational periodicity. Here, we show that such multiscale interactions can be realized in a dipolar Bose-Einstein condensate through the interplay between intrinsic dipole-dipole interactions and photon-mediated interactions generated by coupling to an excited-state manifold together with a suitably engineered optical feedback. This interplay gives rise to two pronounced roton instabilities in the Bogoliubov excitation spectrum, leading to a rich ground-state phase diagram including dodecagonal quasicrystals with twelvefold rotational symmetry for experimentally realistic parameters. We further propose a protocol to access these quasicrystals dynamically and develop a general numerical framework for calculating their collective excitation spectra.

Alex S. Clark, L. G. Helt, Matthew J. Collins +4 more