How to escape & in alm rest api query

Hi,

I'm using alm 11.00, and trying to make a query for tests using alm rest api, the request url is something like this: ......\qcbin\domians\DOMAIN_NAME\projects\PROJECT_NAME\tests?{name['A & B']} .

alm rest api will throw an error complaining about "&". Is there a way to escape it? I tried to escape it with "%26", but then the query is not getting correct result.

Thanks in advance.

David Z.