Atomic momentum patterns with narrower interval

Abstract

We studied the atomic momentum distribution for a superposition of Bloch states spreading in the lowest band of an optical lattice after the action of the standing wave pulse. By designing the imposing pulse on this superposed state, an atomic momentum pattern appears with narrower interval between the adjacent peaks that can be far less than the double recoil momentum. The patterns with narrower interval come from the superposition of the action of the designed pulse on many Bloch states with quasi-momenta over the first Brillouin zone, where for each quasi-momentum there is an interference among several lowest bands. Our experimental result of narrow interval peaks is consistent with the theoretical simulation. The patterns of multi modes with different quasi-momenta are helpful for precise measurement and atomic manipulation.

6 pages, 5 figures

References in corpus (25)

• Many-Body Physics with Ultracold Gases
• Atom Interferometers
• Exploring phase coherence in a 2D lattice of Bose-Einstein condensates
• Fermionic atoms in a 3D optical lattice: Observing Fermi-surfaces, dynamics and interactions
• Colloquium: Physics of optical lattice clocks
• State preparation and dynamics of ultracold atoms in higher lattice orbitals
• Quantum Phases of the Extended Bose-Hubbard Hamiltonian: Possibility of a Supersolid State of Cold Atoms in Optical Lattices
• Photon recoil momentum in dispersive media
• Contrast Interferometry Using Bose-Einstein Condensates to Measure h/m and the Fine Structure Constant
• Atomic matter of non-zero momentum Bose-Einstein condensation and orbital current order
• Atom-wave diffraction between the Raman-Nath and the Bragg regime: Effective Rabi frequency, losses, and phase shifts
• XYZ quantum Heisenberg models with p-orbital bosons
• Adiabatic loading of bosons into optical lattices
• Time reversal symmetry breaking of $p$-orbital bosons in a one-dimensional optical lattice
• Effective preparation and collisional decay of atomic condensate in excited bands of an optical lattice
• Quantum and Classical Dynamics of a BEC in a Large-Period Optical Lattice
• Coherence properties of an atom laser
• Momentum-space engineering of gaseous Bose-Einstein condensates
• Non-adiabatic loading of a Bose-Einstein condensate into the ground state of an optical lattice
• Rapid non-adiabatic loading in an optical lattice
• Manipulating the momentum state of a condensate by sequences of standing wave pulses
• Excitation of atoms in an optical lattice driven by polychromatic amplitude modulation
• The observation of diffraction phases in matter wave scattering
• The theory of quantum levitators
• Phases of d-orbital bosons in optical lattices

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• Study to improve the performance of interferometer with ultra-cold atoms
• Implementation of a double-path multimode interferometer using a spinor Bose-Einstein condensate
• Loading ultracold atoms onto nonlinear Bloch states and soliton states in bichromatic lattices
• Fast and selective inter-band transfer of ultracold atoms in bichromatic lattices permitting Dirac points
• Efficient shortcuts-to-adiabaticity for loading an ultracold Fermi gas into higher orbital bands of one-dimensional optical lattice