Any living teachers claim to be able to attain vajrasamadhi?
vajrasamadhi translates as "adamantine absorption"(http://www.chinabuddhismencyclopedia.com/en/index.php?title=Vajrasamadhi). as (https://en.wikipedia.org/wiki/Vajrasamadhi-sutra). According to buddhist scholar Buswell, the Vajrasamadhi-sutra is regarded to be an "apocryphal scripture". The problem with Buddhism is that practitioners are not recommended to speak about their different types of samadhi experience in public cause it can lead you to unskilled clinging to such experience. Try visit local Chan/Zen centres and ask sensei about it.