Efficient method for quantum impurity problems out of equilibrium
We introduce an efficient method to simulate the dynamics of an interacting quantum
impurity coupled to noninteracting fermionic reservoirs. Viewing the impurity as an open …
impurity coupled to noninteracting fermionic reservoirs. Viewing the impurity as an open …
Nonequilibrium quantum impurity problems via matrix-product states in the temporal domain
Describing a quantum impurity coupled to one or more noninteracting fermionic reservoirs is
a paradigmatic problem in quantum many-body physics. While historically the focus has …
a paradigmatic problem in quantum many-body physics. While historically the focus has …
Exact Non-Markovian Quantum Dynamics on the NISQ Device Using Kraus Operators
A Seneviratne, PL Walters, F Wang - ACS omega, 2024 - ACS Publications
The theory of open quantum systems has many applications ranging from simulating
quantum dynamics in condensed phases to better understanding quantum-enabled …
quantum dynamics in condensed phases to better understanding quantum-enabled …
A multisite decomposition of the tensor network path integrals
A Bose, PL Walters - The Journal of Chemical Physics, 2022 - pubs.aip.org
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 …
recently been proven to be useful. However, these methods scale exponentially with the …
Numerical evaluation and robustness of the quantum mean-force Gibbs state
We introduce a numerical method to determine the Hamiltonian of mean force (HMF) Gibbs
state for a quantum system strongly coupled to a reservoir. The method adapts the time …
state for a quantum system strongly coupled to a reservoir. The method adapts the time …
Tensor network path integral study of dynamics in B850 LH2 ring with atomistically derived vibrations
A Bose, PL Walters - Journal of Chemical Theory and …, 2022 - ACS Publications
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 …
extended quantum systems coupled to dissipative media. We use MS-TNPI to simulate the …
Impact of solvent on state-to-state population transport in multistate systems using coherences
A Bose, PL Walters - Journal of Chemical Theory and …, 2023 - ACS Publications
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 …
enormous challenge. There are broadly two different aspects of the problem that affect the …
Quantum correlation functions through tensor network path integral
A Bose - The Journal of Chemical Physics, 2023 - pubs.aip.org
Tensor networks have historically proven to be of great utility in providing compressed
representations of wave functions that can be used for the calculation of eigenstates …
representations of wave functions that can be used for the calculation of eigenstates …
Impact of Loss Mechanisms on Linear Spectra of Excitonic and Polaritonic Aggregates
D Sharma, A Bose - Journal of Chemical Theory and Computation, 2024 - ACS Publications
The presence of loss mechanisms governed by empirical timescales can profoundly affect
the dynamics in molecular systems, leading to changes in their spectra. However …
the dynamics in molecular systems, leading to changes in their spectra. However …
QuantumDynamics. jl: A modular approach to simulations of dynamics of open quantum systems
A Bose - The Journal of Chemical Physics, 2023 - pubs.aip.org
A simulation of the non-adiabatic dynamics of a quantum system coupled to dissipative
environments poses significant challenges. New sophisticated methods are regularly being …
environments poses significant challenges. New sophisticated methods are regularly being …