Vaibhav Jain, 27, was nabbed Saturday night from his central Delhi Karol Bagh residence.
The victim told police she went with Jain to Nehru Place Friday where he offered her a liquor-laced cold drink.
As per her statement, police said, Jain took her to a hotel in south Delhi's Safdarjung area after she fell unconscious. He then raped her.
Police said the victim approached them after regaining consciousness.
The officer added that the accused was arrested following the victim's medical report that confirmed rape.
Jain is an engineer and works with a private company in Delhi.
"A case has been registered and Jain sent to judicial custody," said the officer.