We showed how two prominent methods in non-Markovian Open Quantum Dynamics are fundamentally related through a novel diagrammatic approach. We also showed how this approach could have applications in quantum sensing and Hamiltonian learning.
my research projects.
You can visit my Google Scholar page for an updated publication list. (* denotes equal contribution)
We showed how two prominent methods in non-Markovian Open Quantum Dynamics are fundamentally related through a novel diagrammatic approach. We also showed how this approach could have applications in quantum sensing and Hamiltonian learning.
We develop a quantum master equation in nonsecular Redfield form for pseudo-Hermitian quantum systems (In progress).
We develop a perturbative technique for solving Markovian quantum dissipative dynamics, with the perturbation parameter being a small gap in the eigenspectrum. We then show how to bypass long-lived coherent (prethermal) dynamics and accelerate the relaxation to thermal equilibration in a hyper-exponential manner, a Markovian quantum-assisted Mpemba-like effect.
Felix Ivander, Nicholas Anto-Sztrikacs, and Dvira Segal. arXiv:2301.06135 (2023). Phys. Rev. E.
We show analytically that quantum coherences are generated and sustained in the V model in the steady-state limit if three conditions, conjoining thermal and coherent effects are simultaneously met: (i) the two baths are held at different temperatures. (ii) Bath-induced pathways do not interfere destructively. (iii) Thermal rates do not mingle with the control parameter α to destroy interference through an effective local equilibrium condition. Particularly, we find that coherences are maximized when the heat current is suppressed.
Felix Ivander, Nicholas Anto-Sztrikacs and Dvira Segal. New Journal of Physics, 24 103010 (2022).
Using the reaction coordinate (RC) quantum master equation framework, we investigate and classify higher-than-second-order transport mechanisms. This technique, which relies on the redefinition of the system–environment boundary, allows for the effects of system–bath coupling to be included to high orders.
Nicholas Anto-Sztrikacs, Felix Ivander, and Dvira Segal. J. Chem. Phys. 156, 214107 (2022).
Using the reaction coordinate quantum master equation method, we study the performance of three-level quantum absorption refrigerators, paradigmatic autonomous quantum thermal machines, and reveal central impacts of strong couplings between the working system and the thermal baths.
Felix Ivander*, Nicholas Anto-Sztrikacs* and Dvira Segal. Phys. Rev. E 105, 034112 (2022).
We assess how different SERS experimental methodologies and workflow parameters impact the ML disease classification in simulated clinical samples.
Katelyn Dixon, Nikkie Bonon*, Felix Ivander*, Saba Ale Ebrahim, Anna Zavodni, Ernest Namdar, Moein Shayegannia, Farzhad Khalvati, Nazir Kherani, and Naomi Matsuura (ACS Applied Nano Materials 10.1021, 2023).
For my first project, I worked under Prof. David C. Stone and designed an open-access Gas Chromatography Simulator
The thesis describing this work can be accessed here.
- Journal club presentation on the RCME method
- Quantum Mechanics B (Physics 221B at Berkeley) final project on the Kubo Formula
- Equilibrium Statistical Physics (Physics 211 at Berkeley) final project on Quantum Thermodynamics
- My undergraduate final thesis
- My notes on polaron transformation, Nakajima-Zwanzig equation, and DMD
Resources
© Felix Ivander 2023.