Quan began her violin studies with Joachim Chassman in Los Angeles, California, and continued with Joseph Fuchs at Juilliard. Quan has concertized and recorded extensively in the U.S., Canada, South America, Europe, Asia, and Australia as soloist, chamber musician and principal orchestral player. Extremely active in the field of "original instrument" performance, Quan is a founding member of the Aulos Ensemble and Classical Quartet. She also appears regularly with the Handel and Haydn Society, Smithsonian Chamber Players, Old Orchestra of the Fairfield Academy, the Bach Ensemble, Aston Magna and the Helicon Foundation. Quan has an equally strong involvement in new music, performing and recording with the Atlantic Quartet, the New York New Music Ensemble and the ISCM Chamber Ensemble. She has appeared and toured with such groups as the Orpheus Chamber Ensemble, the Classical Band, the St. Luke's Orchestra of New York, and the Contemporary Chamber Ensemble, and has appeared in numerous summer festivals including Mostly Mozart at Lincoln Center, Tanglewood, Santa Fe, Blossom, Wolf Trap, Mt. Desert Festival of Chamber Music, and Connecticut Early Music Festival. Quan has recorded on the Harmonia Mundi, Smithsonian, CRI, Musical Heritage Society, MusicMasters, Opus One, and Decca (L'Oiseau-Lyre) labels.