If you want to relive it then simh¹ with mame² might be an option. There appears to be some support for VT11³, along with docs⁴ to use as a starting point.

No, I'm not claiming to have read all one hundred pages already. However, from what I have read I'd love to see a functional demo.

¹ https://simh.trailing-edge.com/

² https://www.mamedev.org/

³ https://github.com/simh/simh/blob/master/PDP11/pdp11_vt.c

⁴ https://wiki.mamedev.org/index.php/MAME_and_SIMH