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  • Bose-Einstein condensation in an electro-pneumatically transformed quadrupole-Ioffe magnetic trap 
    Kumar, Sunil; Sarkar, Sumit; VERMA, GUNJAN; VISHWAKARMA, CHETAN; Noaman, Md; RAPOL, UMAKANT D. (IOP Publishing, 2015-02)
    We report a novel approach for preparing a Bose–Einstein condensate (BEC) of 87Rb atoms using an electro-pneumatically driven transfer of atoms into a quadrupole-Ioffe magnetic trap (QUIC trap). More than 5 × ${{10}^{8}}$ ...
  • A compact atomic beam based system for Doppler-free laser spectroscopy of strontium atoms 
    VERMA, GUNJAN; VISHWAKARMA, CHETAN; DHARMADHIKARI, CHANDRAKANT V.; RAPOL, UMAKANT D. (AIP Publishing, 2017-02)
    We report the construction of a simple, light weight, and compact atomic beam spectroscopy cell for strontium atoms. The cell is built using glass blowing technique and includes a simple titanium sublimation pump for the ...
  • Generation of dark solitons and their instability dynamics in two-dimensional condensates 
    VERMA, GUNJAN; RAPOL, UMAKANT D.; NATH, REJISH (American Physical Society, 2017-04)
    We analyze numerically the formation and the subsequent dynamics of two-dimensional matter wave dark solitons in a Thomas-Fermi rubidium condensate using various techniques. An initially imprinted sharp phase gradient leads ...
  • Nonexponential Decoherence and Subdiffusion in Atom-Optics Kicked Rotor 
    Sarkar, Sumit; Paul, Sanku; VISHWAKARMA, CHETAN; Kumar, Sunil; VERMA, GUNJAN; Sainath, M.; RAPOL, UMAKANT D.; SANTHANAM, M. S. (American Physical Society, 2017-04)
    Quantum systems lose coherence upon interaction with the environment and tend towards classical states. Quantum coherence is known to exponentially decay in time so that macroscopic quantum superpositions are generally ...
  • A simple atomic beam oven with a metal thermal break 
    VISHWAKARMA, CHETAN; MANGAONKAR, JAY; PATEL, KUSHAL; VERMA, GUNJAN; SARKAR, SUMIT; RAPOL, UMAKANT D. (AIP Publishing, 2019-05)
    We report the design and construction of a simple, easy to machine high temperature oven for generating an atomic beam in laser cooling experiments. This design eliminates the problem of thermal isolation of the oven region ...

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