Enhanced entanglement negativity in boundary-driven monitored fermionic chains

@article{Turkeshi2022EnhancedEN,
  title={Enhanced entanglement negativity in boundary-driven monitored fermionic chains},
  author={Xhek Turkeshi and Lorenzo Piroli and Marco Schir{\`o}},
  journal={Physical Review B},
  year={2022}
}
We investigate entanglement dynamics in continuously monitored open quantum systems featuring current-carrying non-equilibrium states. We focus on a prototypical one-dimensional model of boundary-driven non-interacting fermions with monitoring of the local density, whose average Lind-blad dynamics features a well-studied ballistic to diffusive crossover in transport. Here we analyze the dynamics of the fermionic negativity, mutual information, and purity along different quantum trajectories. We… 
1 Citations

Figures from this paper

Entangled multiplets and unusual spreading of quantum correlations in a continuously monitored tight-binding chain
We analyze the dynamics of entanglement in a paradigmatic noninteracting system subject to continuous monitoring of the local excitation densities. Recently, it was conjectured that the evolution of

References

SHOWING 1-10 OF 109 REFERENCES
Dissipative Floquet Dynamics: from Steady State to Measurement Induced Criticality in Trapped-ion Chains
Quantum systems evolving unitarily and subject to quantum measurements exhibit various types of non-equilibrium phase transitions, arising from the competition between unitary evolution and
Quantum information scrambling after a quantum quench
How quantum information is scrambled in the global degrees of freedom of non-equilibrium many-body systems is a key question to understand local thermalization. Here we propose that the scaling of
Multipartite entanglement after a quantum quench
We study the multipartite entanglement of a quantum many-body system undergoing a quantum quench. We quantify the multipartite entanglement through the quantum Fisher information (QFI) density, and
Entanglement entropy of the long-range Dyson hierarchical model
We study the ground state entanglement entropy of the quantum Dyson hierarchical spin chain in which the interaction decays algebraically with the distance as . We exploit the real-space
Entanglement entropy and quantum field theory
We carry out a systematic study of entanglement entropy in relativistic quantum field theory. This is defined as the von Neumann entropy SA = −Tr ρAlogρA corresponding to the reduced density matrix
Transport in quantum chains under strong monitoring
We study the transport properties of quantum 1D systems under strong monitoring. The quantum Zeno effect inhibits transport and induces localization. Beyond the Zeno freezing and on long time scales,
How Dynamical Quantum Memories Forget
TLDR
It is demonstrated that even in the "mixed" phase, a maximally mixed initial density matrix is purified on a time scale equal to the Hilbert space dimension (i.e., exponential in system size), albeit with noisy dynamics at intermediate times which the authors connect to Dyson Brownian motion.
Exactly Solvable Model of Quantum Diffusion
We study the transport property of diffusion in a finite translationally invariant quantum subsystem described by a tight-binding Hamiltonian with a single energy band. The subsystem interacts with
To catch and reverse a quantum jump mid-flight
TLDR
Experiment overturns Bohr’s view of quantum jumps, demonstrating that they possess a degree of predictability and when completed are continuous, coherent and even deterministic.
Quantum many-body scars and weak breaking of ergodicity
Recent discovery of persistent revivals in quantum simulators based on Rydberg atoms have pointed to the existence of a new type of dynamical behavior that challenged the conventional paradigms of
...
...