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Optics and interferometry with atoms and molecules
The development of wave optics for light brought many new insights into our understanding of physics, driven by fundamental experiments like the ones by Young, Fizeau, Michelson-Morley and others.
Cooling Neutral Atoms in a Magnetic Trap for Precision Spectroscopy
A configuration of magnetic fields is exhibited which can harmonically trap paramagnetic particles in a shallow field minimum, superposed on a nearly uniform field which simplifies spectroscopic
Properties of a Bose-Einstein condensate were studied by stimulated, two-photon Bragg scattering. The high momentum and energy resolution of this method allowed a spectroscopic measurement of the
Atom interferometry with Bose-Einstein condensates in a double-well potential.
A trapped-atom interferometer was demonstrated using gaseous Bose-Einstein condensates coherently split by deforming an optical single-well potential into a double-well potential. The relative phase
Contrast interferometry using Bose-Einstein condensates to measure h/m and alpha.
The kinetic energy of an atom recoiling due to absorption of a photon was measured as a frequency, using an interferometric technique called "contrast interferometry." Optical standing wave pulses
Optics and Interferometry with Atoms and Molecules
Publisher Summary This chapter discusses recent accomplishments in the atom and molecular optics and interferometry at MIT. The chapter begins with a discussion of the details of an experimental
Long phase coherence time and number squeezing of two Bose-Einstein condensates on an atom chip.
A rotationally sensitive (Sagnac) geometry for a guided atom interferometer by propagating the split condensates is demonstrated and enhanced coherence time is attributed to number squeezing of the initial state.
Imaging the Mott Insulator Shells by Using Atomic Clock Shifts
Microwave spectroscopy was used to probe the superfluid–Mott insulator transition of a Bose-Einstein condensate in a three-dimensional optical lattice and to determine the onsite interaction and lifetime for individual shells.
Itinerant Ferromagnetism in a Fermi Gas of Ultracold Atoms
The observation of nonmonotonic behavior of lifetime, kinetic energy, and size for increasing repulsive interactions provides strong evidence for a phase transition to a ferromagnetic state, and the observations imply that itinerant ferromagnetism of delocalized fermions is possible without lattice and band structure.
Excitation of Phonons in a Bose-Einstein Condensate by Light Scattering
thereby “optically imprinting” phonons into the gas. The momentum imparted to the condensate was measured by a time-of-flight analysis. This study is the first to explore phonons with wavelengths