7 papers · 1 filter
Collective Dissipation of Oscillator Dipoles Strongly Coupled to 1-D Electromagnetic Reservoirs
Subhasish Guha, Ipsita Bar, Bijay Kumar Agarwalla +1
We study the collective dissipative dynamics of dipoles modeled as harmonic oscillators coupled to 1-D electromagnetic reservoirs. The bosonic nature of the dipole oscillators as w…
Higher-order gap ratios of singular values in open quantum systems
S. Harshini Tekur, M. S. Santhanam, Bijay Kumar Agarwalla +1
Understanding open quantum systems using information encoded in its complex eigenvalues has been a subject of growing interest. In this paper, we study higher-order gap ratios of t…
Transport in open quantum systems in presence of lossy channels
Katha Ganguly, Manas Kulkarni, Bijay Kumar Agarwalla
We study nonequilibrium steady state (NESS) transport in a boundary driven one-dimensional fermionic lattice setup which is further subjected to particle loss. We analyze the syste…
Arbitrary order transfer matrix exceptional points and van Hove singularities
Madhumita Saha, Bijay Kumar Agarwalla, Manas Kulkarni +1
In lattice models with quadratic finite-range Hermitian Hamiltonians, the inherently non-Hermitian transfer matrix (TM) governs the band dispersion. The van Hove singularities (VHS…
Effect of order of transfer matrix exceptional points on transport at band edges
Madhumita Saha, Bijay Kumar Agarwalla, Manas Kulkarni +1
Recently, it has been shown that, in one dimensional fermionic systems, close to band edges, the zero temperature conductance scales as , where is the system length. Thi…
Beyond-ballistic transport in an open quantum ring
Moumita Patra, Bijay Kumar Agarwalla, Santanu K. Maiti
In an open quantum ring (OQR), an asymmetric ring-to-electrode configuration, where the upper and lower arms have unequal lengths, generates antiresonances in the junction transmis…