Quantum speed limit and divisibility of the dynamical map

• URL: http://arxiv.org/abs/2101.11900v1
• Date: Thu, 28 Jan 2021 10:01:17 GMT
• Title: Quantum speed limit and divisibility of the dynamical map
• Authors: Jose Teittinen, Sabrina Maniscalco
• Abstract summary: The quantum speed limit (QSL) is the theoretical lower limit of the time for a quantum system to evolve from a given state to another one. We show that the speed-up can also be observed under P- and CP-divisible dynamics, and that the speed-up is not necessarily tied to the transition from P-divisible to non-P-divisible dynamics.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The quantum speed limit (QSL) is the theoretical lower limit of the time for a quantum system to evolve from a given state to another one. Interestingly, it has been shown that non-Markovianity can be used to speed-up the dynamics and to lower the QSL time, although this behavior is not universal. In this paper we further carry on the investigation on the connection between QSL and non-Markovianity by looking at the effects of P- and CP-divisibility of the dynamical map to the quantum speed limit. We show that the speed-up can also be observed under P- and CP-divisible dynamics, and that the speed-up is not necessarily tied to the transition from P-divisible to non-P-divisible dynamics.

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