Physical Review LettersQuantum phases from reflectionsThomas F. JordanPublished Apr 11, 1988• 10 citationsPublisherAbstractA Comment on the Letter by Chiao et al., Phys. Rev. Lett. 60, 1214 (1988).Received 14 December 1987DOI:https://doi.org/10.1103/PhysRevLett.60.1584©1988 American Physical SocietyDOI10.1103/physrevlett.60.1584