Ecient parallel schemes for carry-propagation-free addition of modi®ed signed-digit trinary numbers are presented. The necessary minterms for implementation using an optical programmable logic array area are derived. The proposed schemes require only a truth table of 25 entries compared with an earlier scheme of 625 entries. The proposed schemes are amenable to optical implementation. Experime...

We propose a new scheme based on quantum dot-bimodal cavity coupling system to realize all-optical switch and logic gates in low-photon-number regime. Suppression of mode transmission due to the destructive interference effect is theoretically demonstrated by driving the cavity with two orthogonally polarized pulsed lasers at certain pulse delay. The transmitted mode can be selected by designin...

The Pockels effect in periodically poled lithium niobate made it possible to switch optical signals between two orthogonal optical linear polarizations of the vertical and horizontal polarization states. Based on this effect, we demonstrated polarization-based binary optical logic gates: AND, and OR gates. By combining these basic gates with other polarization-based optical logic gates such as ...

Digital optical logic circuits capable of performing bit-wise signal processing are critical building blocks for the realization of future high-speed packet-switched networks. In this paper, we present recent advances in all-optical processing circuits and examine the potential of their integration into a system environment. On this concept, we demonstrate serial all-optical Boolean AND/XOR log...

Experimental Realization of Topologically-Protected All-Optical Logic Gates Based on Silicon Photonic Crystal Slabs In article number 2200329, Furong Zhang, Lu He, Huizhen Xiangdong and colleagues present the experimental realization topologically-protected all-optical logic gates Chips. All major functions (OR, XOR, NOT, XNOR, NAND, NOR, AND) can be realized even if some disorders exist. These...

Optical computing has gained much attention due to its high speed, low energy consumption, and the fact that it is naturally parallelizable multiplexable, etc. Single-bit optical logic gates based on a four-hidden-layer diffractive neural network (DONN) have been demonstrated with paired apertures. Here, we show parallel-logic operation strategy two-hidden-layer DONN, showcasing their efficienc...