Beyond the Born-Markov approximation: Dissipative dynamics of a single qubit
نویسندگان
چکیده
منابع مشابه
Chemical reaction dynamics beyond the Born-Oppenheimer approximation.
To predict the branching between energetically allowed product channels, chemists often rely on statistical transition state theories or exact quantum scattering calculations on a single adiabatic potential energy surface. The potential energy surface gives the energetic barriers to each chemical reaction and allows prediction of the reaction rates. Yet, chemical reactions evolve on a single po...
متن کاملDissipative Dynamics of a Qubit Coupled to a Nonlinear Oscillator
We consider the dissipative dynamics of a qubit coupled to a nonlinear oscillator (NO) embedded in an Ohmic environment. By treating the nonlinearity up to first order and applying Van Vleck perturbation theory up to second order in the qubit-NO coupling, we derive an analytical expression for the eigenstates and eigenfunctions of the coupled qubit-NO system beyond the rotating wave approximati...
متن کاملQubit-oscillator dynamics in the dispersive regime: Analytical theory beyond the rotating-wave approximation
We generalize the dispersive theory of the Jaynes-Cummings model beyond the frequently employed rotating-wave approximation RWA in the coupling between the two-level system and the resonator. For a detuning sufficiently larger than the qubit-oscillator coupling, we diagonalize the non-RWA Hamiltonian and discuss the differences to the known RWA results. Our results extend the regime in which di...
متن کاملA correlated-polaron electronic propagator: open electronic dynamics beyond the Born-Oppenheimer approximation.
In this work, we develop an approach to treat correlated many-electron dynamics, dressed by the presence of a finite-temperature harmonic bath. Our theory combines a small polaron transformation with the second-order time-convolutionless master equation and includes both electronic and system-bath correlations on equal footing. Our theory is based on the ab initio Hamiltonian, and is thus well-...
متن کاملThe diagonal Born–Oppenheimer correction beyond the Hartree–Fock approximation
We report on evaluation of the diagonal Born–Oppenheimer correction ~DBOC! to the electronic energy with Hartree–Fock ~HF! and conventional correlated wave functions for general molecular systems. Convergence of both HF and configuration interaction ~CI! DBOC with the one-particle basis seems to be rather fast, with triple-z quality correlation consistent sets of Dunning et al. sufficiently com...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2018
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.98.184306