Efficiency versus speed in quantum heat engines: Rigorous constraint from Lieb-Robinson bound.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.96.022138
Abstract: A long-standing open problem whether a heat engine with finite power achieves the Carnot efficiency is investgated. We rigorously prove a general trade-off inequality on thermodynamic efficiency and time interval of a cyclic process with… read more here.
Keywords: heat engines; lieb robinson; heat; efficiency ... See more keywords
Lieb-Robinson Light Cone for Power-Law Interactions.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.127.160401
Abstract: The Lieb-Robinson theorem states that information propagates with a finite velocity in quantum systems on a lattice with nearest-neighbor interactions. What are the speed limits on information propagation in quantum systems with power-law interactions, which… read more here.
Keywords: law interactions; power law; lieb robinson;
The Value of the Early-Time Lieb-Robinson Correlation Function for Qubit Arrays
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14112253
Abstract: The Lieb-Robinson correlation function is one way to capture the propagation of quantum entanglement and correlations in many-body systems. We consider arrays of qubits described by the tranverse-field Ising model and examine correlations as the… read more here.
Keywords: correlation function; qubit; correlation; lieb robinson ... See more keywords