No, Mullis wrote the Nature paper on time reversal due to the LSD trip (https://www.nature.com/articles/218663b0)

From the Wikipedia page

> During a symposium held for centenarian Albert Hofmann, Hofmann said Mullis had told him that LSD had "helped him develop the polymerase chain reaction that helps amplify specific DNA sequences".

He gave a talk at where I worked and did make reference to an LSD trip in reference to the PCR process.