Devil's crevasse and macroscopic entanglement in two-component Bose-Einstein condensates
arXiv:1305.5095 · doi:10.1103/PhysRevA.88.023609
Abstract
Spin coherent states are the matter equivalent of optical coherent states, where a large number of two component particles form a macroscopic state displaying quantum coherence. Here we give a detailed study of entanglement generated between two spin-1/2 BECs due to an Sz1 Sz2 interaction. The states that are generated show a remarkably rich structure showing fractal characteristics. In the limit of large particle number N, the entanglement shows a strong dependence upon whether the entangling gate times are a rational or irrational multiple of pi/4. We discuss the robustness of various states under decoherence and show that despite the large number of particles in a typical BEC, entanglement on a macroscopic scale should be observable as long as the gate times are less than hbar/J sqrt[N], where J is the effective BEC-BEC coupling energy. Such states are anticipated to be useful for various quantum information applications such as quantum teleportation and quantum algorithms.
References in corpus (8)
- Quantum teleportation between light and matter
- Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
- Spin squeezing and entanglement
- Deterministic quantum teleportation between distant atomic objects
- Spin squeezing, entanglement and quantum metrology with Bose-Einstein condensates
- Microwave potentials and optimal control for robust quantum gates on an atom chip
- Remote Entanglement between a Single Atom and a Bose-Einstein Condensate
- Quantum Information Processing in Optical Lattices and Magnetic Microtraps
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