10 papers · 1 filter
Framework for (non-)adiabatic chiral state conversion: from non-Hermitian Hamiltonians to Liouvillians
Elna Svegborn, Shishir Khandelwal
Adiabatic chiral state conversion (CSC) is one of the many counterintuitive effects associated with non-Hermitian physics. In quantum systems, numerous works have demonstrated this…
Current-based metrology with two-terminal mesoscopic conductors
Shishir Khandelwal, Gabriel T. Landi, Géraldine Haack +1
The traditional approach to quantum parameter estimation focuses on the quantum state, deriving fundamental bounds on precision through the quantum Fisher information. In most expe…
Simulating quantum instruments with projective measurements and quantum post-processing
Shishir Khandelwal, Armin Tavakoli
Quantum instruments describe both the classical outcome and the updated state associated with a quantum measurement. We ask whether these processes can be simulated using only a na…
Emergent Liouvillian exceptional points from exact principles
Shishir Khandelwal, Gianmichele Blasi
Recent years have seen a surge of interest in exceptional points in open quantum systems. The natural approach in this area has been the use of Markovian master equations. While th…
Finite-time dynamics of an entanglement engine: current, fluctuations and kinetic uncertainty relations
Jeanne Bourgeois, Gianmichele Blasi, Shishir Khandelwal +1
Entanglement engines are autonomous quantum thermal machines designed to generate entanglement from the presence of a particle current flowing through the device. In this work, we…
Maximal steady-state entanglement in autonomous quantum thermal machines
Shishir Khandelwal, Björn Annby-Andersson, Giovanni Francesco Diotallevi +2
We devise an autonomous quantum thermal machine consisting of three pairwise-interacting qubits, two of which are locally coupled to thermal reservoirs. The machine operates autono…