System and method for detecting matter using orbital angular momentum signature

摘要

An apparatus for measuring the presence of a predetermined substance in a sample generates a first signal having an applied first orbital angular momentum signature and a signal for applying the first signal to the sample. A generation circuit is provided. The detector receives the first signal after the first signal has passed through the sample, and based on the second orbital angular momentum signature detected in the first signal received from the sample, Determine the presence of a given substance. The detector provides an output indicating the presence of a predetermined substance in response to the determination.