Seems this isn't a popular topic though I can't help but try and assist but I'll try and be brief.
Personally I wouldn't recommend sex on any hallucinogens unless it's a sexual partner you know incredibly well , and I certainly wouldn't recommend you take them to enhance your sexual experience.
Can they ... Sure .. Anything that alters or elevates the levels of certain chemicals in the brain or simply stimulates certain areas of the brain can enhance physical and mental sensations.
Though hallucinogens would be at the bottom of my list... Tbh one of the things that's pretty much the top of my list is simply being in a great mood and being with a great partner.