Reconfigurable ultrafast perovskite polariton logic gates via nonlinear dynamics

TL;DR

This paper demonstrates a reconfigurable perovskite polariton device capable of ultrafast, multi-functional optical logic gates including AND, OR, NOT, and XOR, with high speed and on/off ratio.

Contribution

It introduces a single, reconfigurable perovskite polariton platform enabling multiple logic functions through nonlinear dynamics, advancing optical logic gate development.

Findings

Achieved high on/off ratio of 21 dB in logic operations.

Demonstrated ultrafast response time of 6.7 ps.

Enabled reconfigurable logic functions (AND, OR, NOT, XOR) in a single device.

Abstract

Exciton-polaritons provide a great platform for developing ultrafast all-optical logic gates for quantum and optical chips. However, progress toward practical polariton logic remains limited due to incomplete logical functionality on a single device. Herein, we present a single-device perovskite polariton platform enabling reconfigurable, ultrafast logic gates with functional completeness. The device consists of an optically trapped perovskite microwire, generating well-controlled non-equilibrium polariton condensation states for multiple logic operation channels. By tailoring the power of signal and gate beams, the same device is programmed to execute three basic Boolean functions (AND,OR,and NOT) and a high-order XOR function with a high on/off ratio of 21 dB, and a fast response time 6.7 ps. The reconfigurability arises from the selective activation of different nonlinear responses of polariton condensates, including amplification, seeding state transitions, and nonlinear interaction. These results provide valuable insights for advancing exciton-polariton logic gates.