We consider the problem of symmetry decomposition of the entanglement negativity in free fermionic systems. Rather than performing the standard partial transpose, we use the partial …
P Calabrese, J Cardy, E Tonni - Journal of Statistical Mechanics …, 2013 - iopscience.iop.org
We report on a systematic approach for the calculation of the negativity in the ground state of a one-dimensional quantum field theory. The partial transpose ${\rho} _ {A}^{{T} _ {2}} $ of …
P Calabrese, J Cardy, E Tonni - Journal of Physics A …, 2014 - iopscience.iop.org
We consider the logarithmic negativity of a finite interval embedded in an infinite one dimensional system at finite temperature. We focus on conformal invariant systems and we …
We study quantum-impurity models as a platform for quantum thermometry. A single quantum spin-1 2 impurity is coupled to an explicit, structured, fermionic thermal sample …
The partial transpose of density matrices in many-body quantum systems, in which one takes the transpose only for a subsystem of the full Hilbert space, has been recognized as a …
We study the time evolution of the logarithmic negativity after a global quantum quench. In a 1+ 1-dimensional conformal invariant field theory, we consider the negativity between two …
The entanglement properties of random pure states are relevant to a variety of problems ranging from chaotic quantum dynamics to black-hole physics. The averaged bipartite …
Entanglement not only plays a crucial role in quantum technologies, but is key to our understanding of quantum correlations in many-body systems. However, in an experiment …
V Eisler, Z Zimborás - New Journal of Physics, 2015 - iopscience.iop.org
We consider Gaussian states of fermionic systems and study the action of the partial transposition on the density matrix. It is shown that, with a suitable choice of basis, these …