I summarized state-of-the-art with entangled coherent states and their applications in 2012: http://iopscience.iop.org/1751-8121/45/24/244002/

Dear Professor Barry C.  Sanders,

I really enjoyed your answer. I also have read other of yours beatiful papers in the past.  Thak you very much. 

Have a Happy New Year. 

B. Baseia. 

Prof. Sanders,

I don't want to pay $88 for your article.  Can you post it?  Thanks.

Frank Munley

Please,  can you remember me the paper ?   

B.Baseia

you might also find this of interest http://arxiv.org/abs/1402.6674

I put my articles on the arXiv so you can find my research papers there too.

TANKS FOR BOTH :   M. EVERITT  AND B.C. SANDERS  FOR THEIR ANSWERS.  

I WILL LOOK AT THE LINKS.

wbr

b.  baseia 

'Cat state' quantum computing uses superpositions of coherent states to implement a quantum computer. See papers by Timothy Ralph etc.

dear P P Rohde ,

thanks for this suggestion (T. Ralph)

 Thanks also to both ,  P. P. Rhode and T. Ralph !

B Baseia. 

For two mode case read some papers in PRA. Hope it will be helpful.

B.Rath

Applications include quantum computing and quantum metrology. I wrote briefly about such applications in §5 of "Review of entangled coherent states", Journal of Physics A: Mathematical and Theoretical 45(24): 244002 (22 pp.), 30 May 2012, arXiv.org:1112.1778 I hope that helps.