Dynamics of quantum resources in regular and Majorana fermion systems
- URL: http://arxiv.org/abs/2108.01205v2
- Date: Wed, 6 Apr 2022 18:51:27 GMT
- Title: Dynamics of quantum resources in regular and Majorana fermion systems
- Authors: Diego Paiva Pires, Diogo O. Soares-Pinto, E. Vernek
- Abstract summary: We study the dynamics of quantum resources for two solid-state fermionic quantum devices.
Our results illustrate the use of quantum information-theoretic measures to characterize the role of quantum resources in fermion systems.
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- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In recent years, the reassessment of quantum physical phenomena under the
framework of resource theories has triggered the design of novel quantum
technologies that take advantage from quantum resources, such as entanglement
and quantum coherence. Bearing this in mind, in this work we study the dynamics
of quantum resources for two solid-state fermionic quantum devices: (i) a
system composed by a pair of Majorana fermions and (ii) another comprising a
pair of regular fermions. In both systems, the fermionic species are coupled to
a single-level quantum dot. From the interaction of these tripartite systems
with a dissipative reservoir, we were able to characterize the dynamics of the
devices for some initial states. By employing a time-nonlocal master equation
approach, we obtain the evolution for fermionic occupations, quantum
correlations, and quantum coherences in both the Markovian and non-Markovian
dissipating regimes. We investigate the interconversion of local coherence and
bipartite correlations for the marginal states in each device. While the
dynamics of the entanglement and quantum coherence depend quite strongly on the
temperature of the reservoir for regular fermions, we found these evolutions
are qualitatively similar for the case of Majorana bound states regardless of
temperature. Our results illustrate the use of quantum information-theoretic
measures to characterize the role of quantum resources in fermion systems.
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