186 citations · 896 across the 35 of their papers we have counts for
35 papers
Unfolding the Toric Code Model with Emergent Qubits
Brijesh Kumar
We present the idea of emergent qubits by an exact model construction on a trestle, also generalized to arbitrary graphs. The corresponding eigenstates are quantum paramagnetic, wi…
A universal and stable metasurface for photonic quasi bound state in continuum coupled with two dimensional semiconductors
Brijesh Kumar, Anuj Kumar Singh, Kishor K Mandal +3
Strong coupling of excitons to optical cavity modes is of immense importance to understanding the fundamental physics of quantum electrodynamics at the nanoscale as well as for pra…
Low-temperature theory of inversion and quantum oscillations in Kondo insulators
Arnav Pushkar, Brijesh Kumar
The half-filled Kondo lattice model is studied at low temperatures on simple cubic lattice using the self-consistent theory developed in Phys. Rev. B 96, 075115 (2017). It is found…
Quantum paramagnetism and magnetization plateaus in a kagome-honeycomb Heisenberg antiferromagnet
Meghadeepa Adhikary, Arnaud Ralko, Brijesh Kumar
A spin-1/2 Heisenberg model on honeycomb lattice is investigated by doing triplon analysis and quantum Monte Carlo calculations. This model, inspired by Cu(pymca)(ClO),…
Power-law growth of time and strength of squeezing near quantum critical point
Deepti Sharma, Brijesh Kumar
The dynamics of squeezing across quantum phase transition in two basic models, viz., the one-axis twisting model in transverse field and the Dicke model, is investigated using Hols…
Inversion and magnetic quantum oscillations in symmetric periodic Anderson model
Panch Ram, Brijesh Kumar
We study the symmetric periodic Anderson model of the conduction electrons hybridized with the localized correlated electrons on square lattice. Using the canonical representation…