Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Saha, Abhik"'
We analyze the phase diffusion, quantum fluctuations and their spectral features of an one-dimensional Bose-Josephson junction (BJJ) coupled to a bosonic heat bath. We show the dependence of the phase diffusion coefficient on the on-site interaction
Externí odkaz:
http://arxiv.org/abs/2211.07229
Characterizing far from equilibrium states of the one-dimensional nonlinear Schr{\'o}dinger equation
Autor:
Saha, Abhik Kumar, Dubessy, Romain
We use the mathematical toolbox of the inverse scattering transform to study quantitatively the number of solitons in far from equilibrium one-dimensional systems described by the defocusing nonlinear Schr{\"o}dinger equation. We present a simple met
Externí odkaz:
http://arxiv.org/abs/2210.09812
Autor:
Saha, Abhik Kumar, Dubessy, Romain
Publikováno v:
Phys. Rev. A 104, 023316 (2021)
We study the dynamics of one-dimensional bosons trapped in a box potential, in the presence of a barrier creating a tunable weak-link, thus realizing a one dimensional Bose Josephson junction. By varying the initial population imbalance and the barri
Externí odkaz:
http://arxiv.org/abs/2104.09842
Autor:
Banerjee, Anwesha, Bardhan, Abhishek, Sarkar, Purandar, Datta, Chhanda, Pal, Dilip Kumar, Saha, Abhik, Ghosh, Amlan
Publikováno v:
In Pathology - Research and Practice January 2024 253
Matter-wave phase operators for quantum atom optics: On the possibility of experimental verification
In early 90's Mandel and coworkers performed an experiment \cite{mandel} to examine the significance of quantum phase operators by measuring the phase between two optical fields. We show that this type of quantum mechanical phase measurement is possi
Externí odkaz:
http://arxiv.org/abs/2102.06978
We study the dynamics of a nonlinear dissipative bosonic Josephson junction (BJJ) with a time-dependent sinusoidal perturbation in interaction term. We demonstrate parametric resonance where the system undergoes sustained periodic oscillations even i
Externí odkaz:
http://arxiv.org/abs/2001.04785
We theoretically study the effects of trap-confinement and interatomic interactions on Josephson oscillations (JO) and macroscopic quantum self-trapping (MQST) for a Bose-Einstein condensate (BEC) confined in a trap which has a symmetric double-well
Externí odkaz:
http://arxiv.org/abs/1903.07417
More than 65 years ago, Jost and Kohn [R. Jost and W. Kohn, {Phys. Rev.} {\bf 87}, 977 (1952)] derived an explicit expression for a class of short-range model potentials from a given effective range expansion with the $s$-wave scattering length $a_s$
Externí odkaz:
http://arxiv.org/abs/1902.02177
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