Entanglement in Non-Hermitian Quantum Theory

Abstract

Entanglement is one of the key feature of quantum world that has no classical counterpart. This arises due to the linear superposition principle and the tensor product structure of the Hilbert space when we deal with multiparticle systems. In this paper, we will introduce the notion of entanglement for quantum systems that are governed by non-Hermitian yet PT-symmetric Hamiltonians. We will show that maximally entangled states in usual quantum theory behave like non-maximally entangled states in PT-symmetric quantum theory. Furthermore, we will show how to create entanglement between two PTQubits using non-Hermitian Hamiltonians and discuss the entangling capability of such interaction Hamiltonians that are non-Hermitian in nature.

Latex file, 13 pages, no figures. Invited plenary talk in the International Conference (Homi Bhabha Centenary Conference) on Non-Hermitian Hamiltonians in Quantum Physics (PHHQP VIII) held at BARC, Mumbai during Jan 13-16, 2009

References in corpus (1)

• Alternative descriptions and bipartite compound quantum systems

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