17 citations · 28 across the 9 of their papers we have counts for
4 papers · 1 filter
Time-reversal-based quantum metrology in a central-spin architecture: from SATIN to butterfly echo
Aditya Kumar, Sayan Choudhury
We investigate quantum-enhanced time-reversal-based metrology using the central spin model, in which a single ancilla spin of magnitude mediates interactions between…
Topological chirality of dissipative limit cycles in an open Dicke model
Nikolay Yegovtsev, Sayan Choudhury, W. Vincent Liu
In an open, -symmetric Dicke model with chiral atom-cavity couplings, we show that dissipation drives two limit-cycle phases of opposite chirality in the thermodynamic limit,…
Robust continuous symmetry breaking and multiversality in the chiral Dicke model
Nikolay Yegovtsev, Sayan Choudhury, W. Vincent Liu
The Dicke model (DM) serves as a paradigm for understanding collective light-matter interactions. We introduce the chiral Dicke model, a generalization where an atomic ensemble cou…
Quantum quenches in a spin-1 chain with tunable symmetry
Luis Eduardo Ramos-Solís, Sayan Choudhury, Freddy Jackson Poveda-Cuevas +1
In recent years, the dynamics of interacting quantum systems far from equilibrium have attracted significant research interest. Driven by rapid progress in quantum simulators, vari…