1 An Interferometer for Atoms
نویسندگان
چکیده
We have demonstrated a novel diffraction grating for atoms. Acollimated beam of sodium atoms with a de Broglie wavelength of 17picometers was diffracted by transmission through an array of slitswith a spatial period of 0.2 μm formed in a gold membrane. This isthe first reported diffraction of atoms by a fabricated periodicstructure. Our transmission diffraction grating for atoms can divideor recombine an atomic beam coherently, and may provide theeasiest route to the realization of an atom wave interferometer.
منابع مشابه
An interferometer for atoms.
We have demonstrated an interferometer for atoms. A three-grating geometry is used, in which the interfering beams are distinctly separated in both position and momentum. We used a highly collimated beam of sodium atoms with a de Broglie wavelength of 16 pm and high-quality 0.4-pm-period freestanding gratings which we fabricated using a novel method. The interference signal is 70 counts/s, whic...
متن کاملMach-Zehnder Bragg interferometer for a Bose-Einstein Condensate
We construct a Mach-Zehnder interferometer using Bose-Einstein condensed rubidium atoms and optical Bragg diffraction. In contrast to interferometers based on normal diffraction, where only a small percentage of the atoms contribute to the signal, our Bragg diffraction interferometer uses all the condensate atoms. The condensate coherence properties and high phase-space density result in an int...
متن کاملSelf-alignment of a compact large-area atomic Sagnac interferometer
We report on the realization of a compact atomic Mach–Zehndertype Sagnac interferometer of 13.7 cm length, which covers an area of 19mm2 previously reported only for large thermal beam interferometers. According to Sagnac’s formula, which holds for both light and atoms, the sensitivity for rotation rates increases linearly with the area enclosed by the interferometer. The use of cold atoms inst...
متن کاملEntanglement interferometry for precision measurement of atomic scattering properties.
We report on a matter wave interferometer realized with entangled pairs of trapped 87Rb atoms. Each pair of atoms is confined at a single site of an optical lattice potential. The interferometer is realized by first creating a coherent spin superposition of the two atoms and then tuning the interstate scattering length via a Feshbach resonance. The selective change of the interstate scattering ...
متن کاملLattice interferometer for laser-cooled atoms.
We demonstrate an atom interferometer in which atoms are laser cooled into a 1D optical lattice, suddenly released, and later subjected to a pulsed optical lattice. For short pulses, a simple analytical theory predicts the signal. We investigate both short and longer pulses where the analytical theory fails. Longer pulses yield higher precision and larger signals, and we observe a coherent sign...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001