Abstract

We present a practically implementable scheme to realise macroscopic entanglement of a Bose-Einstein condensate on a superconducting atom chip. Our proposal combines the two emerging fields of micro-manipulation of a Bose-Einstein condensate on an atom chip and quantum coherent dynamics in superconducting circuits. Our idea is based on coupling a superconductor flux loop to a Bose-Einstein condensate in a magnetic trap on an atom chip. We treat the superconductor flux loop in quantum superposition of two flux states. Our scheme also provides a platform to realise entangled atoms interferometry through a Bose-Einstein condensate on an atom chip.

© 2007 Optical Society of America