35 citations · 59 across the 12 of their papers we have counts for
12 papers
Interspecies clock comparison below uncertainty with a transportable clock
Chetan Vishwakarma, Ingo Nosske, Tim Lücke +6
We report a measurement of the optical frequency ratio between the -- electric-octupole (E3) transition of Yb and…
Transportable strontium lattice clock with blackbody radiation shift uncertainty
I. Nosske, C. Vishwakarma, T. Lücke +6
We describe a transportable optical lattice clock based on the transition of lattice-trapped Sr atoms with a total systematic u…
International comparison of optical frequencies with transportable optical lattice clocks
International Clock, Oscillator Networking, Collaboration +37
Optical clocks have improved their frequency stability and estimated accuracy by more than two orders of magnitude over the best caesium microwave clocks that realise the SI second…
Atom interferometry using temporal Talbot effect on a Bose-Einstein condensate
Jay Mangaonkar, Chetan Vishwakarma, S. Sagar Maurya +4
We experimentally investigate a uniform pulse sequence in which atom interference is realized using the temporal matter-wave Talbot effect in an atom-optic kicked rotor system. Mul…
Non-monotonic diffusion rates in atom-optics Lévy kicked rotor
Sanku Paul, Sumit Sarkar, Chetan Vishwakarma +3
The dynamics of chaotic Hamiltonian systems such as the kicked rotor continues to guide our understanding of transport and localization processes. The localized states of the quant…
Study of loss dynamics of strontium in a magneto-optical trap
Chetan Vishwakarma, Kushal Patel, Jay Mangaonkar +3
Collisions with background atoms are known to induce a significant shift in the frequency of state-of-the-art optical atomic clocks and contribute to state decoherence in cold atom…
Design, Fabrication and Characterization of nanoplasmonic lattice for trapping of ultracold atoms
Sunil Kumar, Manav Shah, Ajith P. Ravishankar +5
Ultracold atom-traps on a chip enhances the practical application of atom traps in quantum information processing, sensing, and metrology. Plasmon mediated near-field optical poten…
A simple atomic beam oven with a metal thermal break
Chetan Vishwakarma, Jay Mangaonkar, Kushal Patel +3
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 prob…
Diffraction of a CW atom laser in the Raman-Nath regime
Sumit Sarkar, Jay Mangaonkar, Chetan Vishwakarma +1
Atom interferometry is the most successful technique for precision metrology. However, current interferometers using ultracold atoms allows one to probe the interference pattern on…
A compact atomic beam based system for Doppler-free laser spectroscopy of Strontium atoms
Gunjan Verma, Chetan Vishwakarma, C. V. Dharmadhikari +1
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 s…
Non-exponential decoherence and subdiffusion in atom-optics kicked rotor
Sumit Sarkar, Sanku Paul, Chetan Vishwakarma +5
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 macroscopi…
Bose-Einstein Condensation in an electro-pneumatically transformed quadrupole-Ioffe magnetic trap
Sunil Kumar, Sumit Sarkar, Gunjan Verma +3
We report a novel approach for preparing a Bose-Einstein condensate (BEC) of Rb atoms using electro-pneumatically driven transfer of atoms into a Quadrupole-Ioffe magnetic t…