500 citations · 616 across the 13 of their papers we have counts for
14 papers
Interactions and excitation blockade of Rydberg macrodimers
Dhiya Varghese, Rejish Nath, Simon Hollerith +1
We present a theoretical study of interactions between Rydberg macrodimers, molecular bound states of Rydberg atoms, and the largest known neutral homonuclear diatomic molecules. A…
Dynamical phase transition in generalized Dicke model with strongly interacting trapped Rydberg ions
Manish Chaudhary, Rejish Nath, Weibin Li
We study dynamical phase transitions in the generalized dissipative Dicke model in an array of trapped Rydberg ions, where their density-density interactions compete with the colle…
Faraday patterns, spin textures, spin-spin correlations and competing instabilities in a driven spin-1 antiferromagnetic Bose-Einstein condensate
Vaishakh Kargudri, Sandra M. Jose, Rejish Nath
We study the formation of transient Faraday patterns and spin textures in driven quasi-one-dimensional and quasi-two-dimensional spin-1 Bose-Einstein condensates under the periodic…
Quantum dynamics of spin-J particles in static and rotating magnetic fields: Entanglement resonances and kinks
Nargis Sultana, Siddharth Seetharaman, Rejish Nath
We examine the quantum dynamics of both a single spin-J particle and a pair of spin-J particles in the presence of static and rotating magnetic fields, which can be important for q…
Observation of effects of inter-atomic interaction on Autler-Townes splitting in cold Rydberg atoms
Silpa B S, Shovan Kanti Barik, Varna Shenoy +3
We demonstrate the effect of inter-atomic interaction in highly excited Rydberg atoms via Autler- Townes splitting in cold atoms. We measure the Autler-Townes (AT) splitting of the…
Spin Phonon Relaxation Dynamics from a Conical Intersection of Trapped Rydberg Ions
Manish Chaudhary, Rejish Nath, Weibin Li
Non-adiabatic processes near conical intersections are rooted in the stronger coupling between electronic and nuclear degrees of freedom. Using a system of two trapped Rydberg ions…
Commensurate supersolids and re-entrant transitions in an extended Bose-Hubbard ladder
Ashwath N Madhusudan, Gopal Chandra Santra, Inderpreet Kaur +2
We investigate the ground state phases of an extended Bose-Hubbard ladder of unit filling via the density-matrix-renormalization-group method and, in particular, the effect of rung…
Properties of Krylov state complexity in qubit dynamics
Siddharth Seetharaman, Chetanya Singh, Rejish Nath
We analyze the properties of Krylov state complexity in qubit dynamics, considering a single qubit and a qubit pair. A geometrical picture of the Krylov complexity is discussed for…
Rydberg superatoms: An artificial quantum system for quantum information processing and quantum optics
Xiao-Qiang Shao, Shi-Lei Su, Lin Li +3
Dense atom ensembles with Rydberg excitations display intriguing collective effects mediated by their strong, long-range dipole-dipole interactions. These collective effects, often…
Path Integral Monte Carlo Study of a Doubly-Dipolar Bose Gas
Ratheejit Ghosh, Matteo Ciardi, Rejish Nath +1
By combining first-principles path integral Monte Carlo methods and mean-field techniques, we explore the properties of cylindrically trapped doubly-dipolar Bose gases. We first ve…
Stripe and checkerboard patterns in a stack of driven quasi-one-dimensional dipolar condensates
Shreyas Nadiger, Sandra M. Jose, Ratheejit Ghosh +2
The emergence of transient checkerboard and stripe patterns in a stack of driven quasi-one-dimensional homogeneous dipolar condensates is studied. The parametric driving of the …
Density engineering via inter-condensate dipole-dipole interactions
Pranay Nayak, Ratheejit Ghosh, Rejish Nath
We study the effect of inter-condensate dipole-dipole interactions in a setup consisting of physically disconnected, single-species dipolar Bose-Einstein condensates. In particular…
Hexagonal Plaquette Spin-spin Interactions and Quantum Magnetism in a Two-dimensional Ion Crystal
Rejish Nath, Marcello Dalmonte, Alexander W Glaetzle +3
We propose a trapped ion scheme en route to realize spin Hamiltonians on a Kagome lattice which, at low energies, are described by emergent Z2 gauge fields, and support a topologic…
Three-dimensional Roton-Excitations and Supersolid formation in Rydberg-excited Bose-Einstein Condensates
N. Henkel, R. Nath, T. Pohl
We study the behavior of a Bose-Einstein condensate in which atoms are weakly coupled to a highly excited Rydberg state. Since the latter have very strong van der Waals interaction…