Author(s):
1. Mohammad Imran:
Department of Physics, KUST, Kohat, Pakistan
2. Abdullah Yar:
Department of Physics, KUST, Kohat, Pakistan
3. Salman Khan Safi:
Department of Physics, COMSATS, Islamabad, Pakistan
Abstract:
In this research work we will focus on examining the behavior of Loschmidt echo (LE) near the quantum critical point of an Ising spin chain. This spin chain is subjected to a transverse applied magnetic field and is connected to a spin-qubit, referred to as the central qubit. The Ising spin chain, in this context, is considered as the environment. As time progresses, the central qubit interacts with the environment and becomes entangled with its numerous degrees of freedom. The information encoded into the Hilbert space of the qubit can be used to analyze the behavior of quantum criticality of the environment, therefore, the system undergoes a transition from a pure state to a mixed state due to the quantum criticality of the coupled surrounding system. Finally, investigate the dynamics of the Loschmidt echo's decay through a quantum phase transition.
Page(s):
415-415
DOI:
DOI not available
Published:
Journal: Abstract Book on International Conference on Food and Applied Sciences (ICFAS-23) 3-5 August 23, Volume: 0, Issue: 0, Year: 2023
Keywords:
transverse applied magnetic field
,
quantum critical point
,
Ising spin chain
,
quantum phase transition
,
Loschmidt echo
,
Loschmidt echos decay
References:
References are not available for this document.
Citations
Citations are not available for this document.