52 citations · 192 across the 9 of their papers we have counts for
9 papers
Hamiltonian ratchets with ultra-cold atoms
Jiating Ni, Siamak Dadras, Wa Kun Lam +4
Quantum-resonance ratchets have been realized over the last ten years for the production of directed currents of atoms. These non-dissipative systems are based on the interaction o…
Photoassociative production of ultracold heteronuclear YbLi* molecules
Richard Roy, Rajendra Shrestha, Alaina Green +5
We report on the production of ultracold heteronuclear YbLi* molecules in a dual-species magneto-optical trap by photoassociation (PA). The formation of the electronically excited…
Magnetic field dependent interactions in an ultracold Li-Yb(P) mixture
William Dowd, Richard J. Roy, Rajendra K. Shrestha +4
Magnetic Feshbach resonances have allowed great success in the production of ultracold diatomic molecules from bi-alkali mixtures, but have so far eluded observation in mixtures of…
Time Response Dynamics of Plasmon Excitation in Cobalt Nanoparticles on Glass Substrate
R. K. Shrestha, H. Garcia
We use ultrafast pump-probe transmission spectroscopy to measure the electronic relaxation time for electrons in cobalt nanoparticles embedded on glass substrate using femtosecond…
Dynamical tunneling of a Bose-Einstein condensate in periodically driven systems
R. K. Shrestha, J. Ni, W. K. Lam +2
We report measurements of dynamical tunneling rates of a Bose-Einstein condensate across a barrier in classical phase space. The atoms are initially prepared in quantum states that…
Controlling the Momentum Current of an Off-resonant Ratchet
R. K. Shrestha, J. Ni, W. K. Lam +2
We experimentally investigate the phenomenon of a quantum ratchet created by exposing a Bose-Einstein Condensate to short pulses of a potential which is periodic in both space and…
A cold-atom ratchet interpolating between classical and quantum dynamics
R. K. Shrestha, W. K. Lam, J. Ni +1
We study the crossover between classical and quantum dynamics by observing the behavior of a quantum ratchet created by exposing a Bose-Einstein condensate to short pulses of a pot…
Fidelity of the quantum delta-kicked accelerator
R. K. Shrestha, S. Wimberger, J. Ni +2
The sensitivity of the fidelity in the kicked rotor to an acceleration is experimentally and theoretically investigated. We used a Bose-Einstein condensate exposed to a sequence of…
Sub-Fourier characteristics of a -kicked rotor resonance
I. Talukdar, R. Shrestha, G. S. Summy
We experimentally investigate the sub-Fourier behavior of a -kicked rotor resonance by performing a measurement of the fidelity or overlap of a Bose-Einstein condensate (BEC) ex…