A number filter for matter-waves
arXiv:0710.1737 · doi:10.1103/PhysRevA.78.013605
Abstract
In current Bose-Einstein condensate experiments, the shot-to-shot variation of atom number fluctuates up to 10%. In here, we present a procedure to suppress such fluctuations by using a nonlinear p-pi-pbar matter wave interferometer for a Bose-Einstein condensate with two internal states and a high beam-splitter asymmetry (p, pbar not-equal 0.5). We analyze the situation for an inhomogeneous trap within the Gross-Pitaevskii mean-field theory, as well as a quantum mechanical Josephson model, which addresses complementary aspects of the problem and agrees well otherwise.
7 pages Latex, 5 eps color figures
References in corpus (25)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Cold bosonic atoms in optical lattices
- Transition from a strongly interacting 1D superfluid to a Mott insulator
- Experimental long-lived entanglement of two macroscopic objects
- Multi-particle entanglement of hot trapped ions
- Realization of Bose-Einstein condensates in lower dimensions
- Many-particle entanglement with Bose--Einstein condensates
- Camparison of the Hanbury Brown-Twiss effect for bosons and fermions
- Testing General Relativity with Atom Interferometry
- Hanbury Brown Twiss effect for ultracold quantum gases
- Quantum limits in interferometric measurements
- Effect of cold collisions on spin coherence and resonance shifts in a magnetically trapped ultra-cold gas
- Direct Observation of Sub-Poissonian Number Statistics in a Degenerate Bose Gas
- Measurement of the Spatial Correlation Function of Phase Fluctuating Bose-Einstein Condensates
- Growth of Bose-Einstein Condensates from Thermal Vapor
- Extended Coherence Time with Atom-Number Squeezed Sources
- A Primary Noise Thermometer for Ultracold Bose Gases
- Creating maximally entangled atomic states in a Bose-Einstein condensate
- Quantum tunneling of semifluxons
- Quantum soliton generation using an interferometer
- Differential atom interferometry beyond the standard quantum limit
- Sagnac Effect of Goedel's Universe
- A quantum beam splitter for atoms
- Dropping cold quantum gases on Earth over long times and large distances
- Ground state correlations in a trapped quasi one-dimensional Bose Gas