71 citations · 220 across the 13 of their papers we have counts for
13 papers
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…
Exact finite-time correlation functions for multi-terminal setups: Connecting theoretical frameworks for quantum transport and thermodynamics
Gianmichele Blasi, Shishir Khandelwal, Géraldine Haack
Transport in open quantum systems can be explored through various theoretical frameworks, including the quantum master equation, scattering matrix, and Heisenberg equation of motio…
Chiral Bell-state transfer via dissipative Liouvillian dynamics
Shishir Khandelwal, Weijian Chen, Kater W. Murch +1
Chiral state transfer along closed loops in the vicinity of an exceptional point is one of the many counter-intuitive observations in non-Hermitian physics. The application of this…
Dynamical nuclear polarization for dissipation-induced entanglement in NV centers
Shishir Khandelwal, Shashwat Kumar, Nicolas Palazzo +2
We propose a practical implementation of a two-qubit entanglement engine which denotes a scheme to generate quantum correlations through purely dissipative processes. On a diamond…
Characterizing the performance of heat rectifiers
Shishir Khandelwal, Martí Perarnau-Llobet, Stella Seah +2
A physical system connected to two thermal reservoirs at different temperatures is said to act as a heat rectifier when it is able to bias the heat current in a given direction, si…
Signatures of Liouvillian exceptional points in a quantum thermal machine
Shishir Khandelwal, Nicolas Brunner, Géraldine Haack
Viewing a quantum thermal machine as a non-Hermitian quantum system, we characterize in full generality its analytical time-dependent dynamics by deriving the spectrum of its non-H…
Critical heat current for operating an entanglement engine
Shishir Khandelwal, Nicolas Palazzo, Nicolas Brunner +1
Autonomous entanglement engines have recently been proposed to generate steady-state bipartite and multipartite entanglement exploiting only incoherent interactions with thermal ba…
Universal quantum modifications to general relativistic time dilation in delocalised clocks
Shishir Khandelwal, Maximilian P. E. Lock, Mischa P. Woods
The theory of relativity associates a proper time with each moving object via its world line. In quantum theory however, such well-defined trajectories are forbidden. After introdu…