Quantum phase transition and engineering in two-component BEC in optical lattices

TL;DR

This paper reviews recent advances in understanding quantum phase transitions in two-component Bose-Einstein condensates within optical lattices, highlighting their potential for quantum state engineering and applications in quantum information.

Contribution

It provides a comprehensive review of quantum phase transitions in multi-component BECs in optical lattices, emphasizing their role in quantum state manipulation.

Findings

Quantum coherence can emerge or vanish across the lattice.

Linear superpositions of macroscopic quantum states are achievable.

Potential applications in quantum information processing are discussed.

Abstract

In this paper we review recent progress in studying quantum phase transitions in one- and two-component Bose-Einstein condensates (BEC) in optical lattices. These phase transitions involve the emergence and disappearance of quantum coherence over whole optical lattice and of linear superposition of macroscopic quantum states. The latter may provide new means to engineer and to manipulate novel macroscopic quantum states and novel coherent atomic beams for quantum information processing, quantum computing etc.