19 citations · 40 across the 5 of their papers we have counts for
14 papers
Exceptional hypersurfaces of transfer matrices of finite-range lattice models and their consequences on quantum transport properties
Madhumita Saha, Manas Kulkarni, Bijay Kumar Agarwalla
We investigate the emergence and corresponding nature of exceptional points located on exceptional hyper-surfaces of non-hermitian transfer matrices for finite-range one-dimensiona…
Study of bounds on non-equilibrium fluctuations for asymmetrically driven quantum Otto engine
Sandipan Mohanta, Madhumita Saha, B. Prasanna Venkatesh +1
For a four-stroke asymmetrically driven quantum Otto engine with working medium modeled by a single qubit, we study the bounds on non-equilibrium fluctuations of work and heat. We…
Environment assisted superballistic scaling of conductance
Madhumita Saha, Bijay Kumar Agarwalla, Manas Kulkarni +1
We find that, in the presence of weak incoherent effects from surrounding environments, the zero temperature conductance of nearest neighbour tight-binding chains exhibits a counte…
Universal subdiffusive behavior at band edges from transfer matrix exceptional points
Madhumita Saha, Bijay Kumar Agarwalla, Manas Kulkarni +1
We discover a deep connection between parity-time (PT) symmetric optical systems and quantum transport in one-dimensional fermionic chains in a two-terminal open system setting. Th…
Quantum transport in quasi-periodic lattice systems in presence of Büttiker probes
Madhumita Saha, B. Prasanna Venkatesh, Bijay Kumar Agarwalla
Quasi-periodic lattice systems offer diverse transport properties. In this work, we investigate the environment induced effects on transport properties for quasi-periodic systems,…
Sub-diffusive phases in open clean long-range systems
Archak Purkayastha, Madhumita Saha, Bijay Kumar Agarwalla
We show that a one-dimensional ordered fermionic lattice system with power-law-decaying hopping, when connected to two baths at its two ends with different chemical potentials at z…