Phase-Coherent Amplification of Matter Waves

• DOI: 10.1126/science.286.5448.2309
• Publication Date: 2002-07-27T09:42:47Z
• Authors: Mikio Kozuma; Yoichi Suzuki; Yoshio Torii; Toshiaki Sugiura; Takahiro Kuga; E. W. Hagley; L. Deng
• Keywords: Matter wave; Superradiance; Atom interferometer; Atom optics; Atom laser

Phase-coherent matter-wave amplification was demonstrated using Bose- Einstein–condensed rubidium-87 atoms. A small seed matter wave created with coherent optical Bragg diffraction. Amplification of this achieved by the initial condensate as a gain medium through superradiance effect. The coherence properties amplified wave, studied interferometer, were shown to be locked those wave. active device here has great potential in fields atom optics, lithography, and precision measurements.