Unequivocally yes; the home owner would potentially be liable for damages and possibly with the crimes of grievous bodily harm and/or manslaughter.
Specifics will vary by state jurisdiction but the general common law remedy would be the tort of negligence. One of the recognised duties of care is of a occupier to entrants. Entrants include those with express permission (e.g. guests), by implied permission (e.g. the postman) and even in some circumstances uninvited visitors (especially children and "innocent" trespassers). An "innocent" trespasser is a person on property without express permission but who has not a) broken in and b) been asked to leave.
The law enforcement officers in the circumstances you describe, where the person is cooperative, would fall into the first category. Even without permission, they would probably fall into the second category and certainly the third if they were engaged in the lawful course of their duties. The validity of the warrant is irrelevant; if the officers genuinely believe that it is valid then they are acting lawfully. They could also enter lawfully if they had probable cause.
Having established that the duty exists, the occupier must take reasonable care not to cause injury to visitors. "Reasonable" is an objective measure and takes account of the circumstances, for example:
if the land is used as a military live firing range where the "traps" consist of unexploded ordinance, then erecting a barbed wire fence 6 foot high with signs in the most commonly used languages for the area is probably reasonable
if the land is used for hunting and signposted as such and the traps are for wild animals, are deployed only for the period of the hunting and signposted at the location then that is probably reasonable.
if the land is a private home then prima facie, booby-trapping it with the intent to injure or kill people is not reasonable and erecting signs does not make it so. In these circumstances the action is not just negligent, it is criminally negligent and any injuries or deaths caused would be criminal as well as open to civil remedies.
The Castle Doctrine is inapplicable see this section.