55 citations · 148 across the 16 of their papers we have counts for
16 papers
Routes of Transport in the Path Integral Lindblad Dynamics through State-to-State Analysis
Devansh Sharma, Amartya Bose
Analyzing routes of transport for open quantum systems with non-equilibrium initial conditions is extremely challenging. The state-to-state approach [A. Bose, and P.L. Walters, J.…
A Non-Hermitian State-to-State Analysis of Transport in Aggregates with Multiple Endpoints
Devansh Sharma, Amartya Bose
Efficiency of quantum transport through aggregates with multiple end-points or traps proves to be an emergent and a highly non-equilibrium phenomenon. We present a numerically exac…
Adaptive Kink Filtration: Achieving Asymptotic Size-Independence of Path Integral Simulations Utilizing the Locality of Interactions
Amartya Bose
Recent method developments involving path integral simulations have come a long way in making these techniques practical for studying condensed phase non-equilibrium phenomena. One…
Impact of Loss Mechanisms on Linear Spectra of Excitonic and Polaritonic Aggregates
Devansh Sharma, Amartya Bose
The presence of loss mechanisms governed by empirical time-scales affect the dynamics and spectra of systems in profound ways. However, incorporation of these effects and their int…
Quantum correlation functions through tensor network path integral
Amartya Bose
Tensor networks have historically proven to be of great utility in providing compressed representations of wave functions that can be used for calculation of eigenstates. Recently,…
QuantumDynamics.jl: A modular approach to simulations of dynamics of open quantum systems
Amartya Bose
Simulation of non-adiabatic dynamics of a quantum system coupled to dissipative environments poses significant challenges. New sophisticated methods are regularly being developed w…
Impact of Spatial Inhomogeneity on Excitation Energy Transport in the Fenna-Matthews-Olson Complex
Amartya Bose, Peter L. Walters
The dynamics of the excitation energy transfer (EET) in photosynthetic complexes is an interesting question both from the perspective of fundamental understanding and the research…
Impact of solvent on state-to-state population transport in multistate systems using coherences
Amartya Bose, Peter L. Walters
Understanding the pathways taken by a quantum particle during a transport process is an enormous challenge. There are broadly two different aspects of the problem that affect the r…
Effect of Phonons and Impurities on the Quantum Transport in XXZ Spin-Chains
Amartya Bose
Numerical and analytic results have been used to characterize quantum transport in spin chains, showing the existence of both ballistic and diffusive motion. Experiments have shown…
Effect of Temperature Gradient on Quantum Transport
Amartya Bose, Peter L. Walters
The recently introduced multisite tensor network path integral (MS-TNPI) method [Bose and Walters, J. Chem. Phys., 2022, 156, 24101.] for simulation of quantum dynamics of extended…
Zero-Cost Corrections to Influence Functional Coefficients from Bath Response Functions
Amartya Bose
Recent work has shown that it is possible to circumvent the calculation of the spectral density and directly calculate the coefficients of the discretized influence functionals usi…
Tensor Network Path Integral Study of Dynamics in B850 LH2 Ring with Atomistically Derived Vibrations
Amartya Bose, Peter L. Walters
The recently introduced multisite tensor network path integral (MS-TNPI) allows simulation of extended quantum systems coupled to dissipative media. We use MS-TNPI to simulate the…
A Multisite Decomposition of the Tensor Network Path Integrals
Amartya Bose, Peter L. Walters
Tensor network decompositions of path integrals for simulating open quantum systems have recently been proven to be useful. However, these methods scale exponentially with the syst…
A Pairwise Connected Tensor Network Representation of Path Integrals
Amartya Bose
It has been recently shown how the tensorial nature of real-time path integrals involving the Feynman-Vernon influence functional can be utilized using matrix product states, takin…
A tensor network representation of path integrals: Implementation and analysis
Amartya Bose, Peter L. Walters
Tensors with finite correlation afford very compact tensor network representations. A novel tensor network-based decomposition of real-time path integral simulations involving Feyn…
Quantum Phase Transitions in Long-Range Interacting Hyperuniform Spin Chains in a Transverse Field
Amartya Bose, Salvatore Torquato
Hyperuniform states of matter are characterized by anomalous suppression of long-wavelength density fluctuations. While most of interesting cases of disordered hyperuniformity are…