GRAPE optimization for open quantum systems with time-dependent decoherence rates driven by coherent and incoherent controls

VN Petruhanov, AN Pechen - Journal of Physics A: Mathematical …, 2023 - iopscience.iop.org
Abstract The GRadient Ascent Pulse Engineering (GRAPE) method is widely used for
optimization in quantum control. GRAPE is gradient search method based on exact …

Non-Hermitian pseudomodes for strongly coupled open quantum systems: Unravelings, correlations, and thermodynamics

P Menczel, K Funo, M Cirio, N Lambert, F Nori - Physical Review Research, 2024 - APS
The pseudomode framework provides an exact description of the dynamics of an open
quantum system coupled to a non-Markovian environment. Using this framework, the …

[HTML][HTML] Dynamics of a strongly coupled quantum heat engine—Computing bath observables from the hierarchy of pure states

V Boettcher, R Hartmann, K Beyer… - The Journal of Chemical …, 2024 - pubs.aip.org
We present a fully quantum dynamical treatment of a quantum heat engine and its baths
based on the Hierarchy of Pure States (HOPS), an exact and general method for open …

A quantum otto engine with shortcuts to thermalization and adiabaticity

A Pedram, SC Kadıoğlu, A Kabakçıoğlu… - New Journal of …, 2023 - iopscience.iop.org
We investigate the energetic advantage of accelerating a quantum harmonic oscillator Otto
engine by use of shortcuts to adiabaticity (for the expansion and compression strokes) and …

Measurement-based quantum Otto engine with a two-spin system coupled by anisotropic interaction: Enhanced efficiency at finite times

C Purkait, A Biswas - Physical Review E, 2023 - APS
We have studied the performance of a measurement-based quantum Otto engine (QOE) in a
working system of two spins coupled by Heisenberg anisotropic interaction. A nonselective …

Quantum field heat engine powered by phonon-photon interactions

A Ferreri, V Macrì, FK Wilhelm, F Nori, DE Bruschi - Physical Review Research, 2023 - APS
We present a quantum heat engine based on a cavity with two oscillating mirrors that
confine a quantum field. The engine performs an Otto cycle during which the walls and a …

Anti-Zeno purification of spin baths by quantum probe measurements

DBR Dasari, S Yang, A Chakrabarti, A Finkler… - Nature …, 2022 - nature.com
The quantum Zeno and anti-Zeno paradigms have thus far addressed the evolution control
of a quantum system coupled to an immutable bath via non-selective measurements …

Supersensitive phase estimation by thermal light in a Kerr-nonlinear interferometric setup

N Meher, E Poem, T Opatrný, O Firstenberg, G Kurizki - Physical Review A, 2024 - APS
Estimation of the phase delay between interferometer arms is the core of transmission phase
microscopy. Such phase estimation may exhibit an error below the standard quantum (shot …

Thermodynamic sensing of quantum nonlinear noise correlations

N Meher, T Opatrný, G Kurizki - Quantum Science and …, 2024 - iopscience.iop.org
We put forth the concept of quantum noise sensing in nonlinear two-mode interferometers
coupled to mechanical oscillators. These autonomous machines are capable of sensing …

Speed limits of the trace distance for open quantum system

S Nakajima, Y Utsumi - New Journal of Physics, 2022 - iopscience.iop.org
We investigate the speed limit of the state transformation in open quantum systems
described by the Lindblad type quantum master equation. We obtain universal bounds of the …