An N-qubit master equation and two-qubit entanglement dynamics in spin-chain and Bosonic environments

Authors

  • Roberto S. Vitancol National Institute of Physics, University of the Philippines, Diliman
  • Eric A. Galapon National Institute of Physics, University of the Philippines Diliman

Abstract

The master equation for an N-qubit system immersed in an environment consisting of a reservoir of infinitely many modes of harmonic oscillators was derived. The master equation was then used to simulate the entanglement dynamics of two neighboring qubits by tracing out the other N-2 qubits. It was shown that if there are more than two qubits in the system, the concurrence between two qubits will not decay and will approach a steady state and that this steady state value increases with increasing number of qubits. The increase of steady state entangle- ment with increasing number of qubits can also be obtained with only a three-qubit system if the third qubit is strongly coupled to the environment.

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Issue

Article ID

SPP2013-5B-6

Section

Computational Physics

Published

2013-10-23

How to Cite

[1]
RS Vitancol and EA Galapon, An N-qubit master equation and two-qubit entanglement dynamics in spin-chain and Bosonic environments, Proceedings of the Samahang Pisika ng Pilipinas 31, SPP2013-5B-6 (2013). URL: https://proceedings.spp-online.org/article/view/SPP2013-5B-6.