Dear all, This is a reply that Manny Knill sent me related to his way of doing PEA (quant-ph/0607019) and our way of doing it. His method is related to James's and Tomita's method. I think now that some of you guys are looking at Phase Estimation in your class, and Masoud (and Ali soon) have/are arriving we should have a group meeting and talk about the Manny Knill paper vis a vis what we do. Alan -- Alán Aspuru-Guzik Assistant Professor Department of Chemistry and Chemical Biology 12 Oxford Street Harvard University Cambridge, MA 02138 Tel: (617)384-8188 Group URL: http://aspuru.chem.harvard.edu