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Even Odd Splitting of the Gaussian Quantum Fisher Information: From Symplectic Geometry to Metrology
Kaustav Chatterjee, Tanmoy Pandit, Varinder Singh +2
We introduce a canonical decomposition of the quantum Fisher information (QFI) for centered multimode Gaussian states into two additive pieces: an even part that captures changes i…
Fundamental Limitations on the Reliabilities of Power and Work in Quantum Batteries
Brij Mohan, Tanmoy Pandit, Maciej Lewenstein +1
Quantum batteries, microscopic devices designed to address energy demands in quantum technologies, promise high power during charging and discharging processes. Yet their practical…
Relativistic Quantum Otto Engine: Generalized efficiency bounds and frictional effects
Vahid Shaghaghi, Pritam Chattopadhyay, Vijit V. Nautiyal +3
This work investigates a relativistic quantum Otto engine with a harmonic oscillator as its working medium, analyzing how relativistic motion and nonadiabatic driving affect its pe…
Relativistic Quantum Thermal Machine: Harnessing Relativistic Effects to Surpass Carnot Efficiency
Tanmoy Pandit, Pritam Chattopadhyay, Kaustav Chatterjee +1
We investigate a three-level maser quantum thermal machine in which the system-reservoir interaction is modeled via Unruh-DeWitt type coupling, with one or both reservoirs undergoi…
Landauer Principle and Thermodynamics of Computation
Pritam Chattopadhyay, Avijit Misra, Tanmoy Pandit +1
According to the Landauer principle, any logically irreversible process accompanies entropy production, which results in heat dissipation in the environment. Erasing of information…
Over-rotation coherent error induced by pseudo-twirling of quantum gates
Tanmoy Pandit, Raam Uzdin
Quantum error mitigation schemes (QEM) have greatly enhanced the performance of quantum computers, mostly by reducing errors caused by interactions with the environment. Neverthele…