Mata has scored four times in his four starts against the Gunners for Chelsea, with his latest strike coming earlier this season in the Capital One Cup.
"The week at the training ground was really good. I know my team mates better and I feel a great atmosphere in the dressing room," Mata said.
"I hope we can show that next Wednesday against Arsenal. It's a very tough game, but I have good memories from my last visit to the Emirates a few months ago and I hope I can enjoy a good game as well."