Chelsea, leading 1-0 from the first leg in London, were level overall when Vincenzo Iaquinta put the Italians ahead on the night in the 19th minute.

But Michael Essien, making his first start since damaging knee ligaments on international duty last September, equalised in first-half stoppage time.

Juventus went back in front in the 74th minute through an Alessandro Del Piero penalty but Didier Drogba scored his fourth goal in five games in the 83rd minute to crush any hopes of a home comeback.

"Playing at Juventus is not the easiest task," said Hiddink. "We started rather sloppily and lost too many duels.

"We did not mark well and we were 1-0 down. There was a reaction from the team that was okay.

"We knew at 1-0 down, or even at 2-0 down, that we must not panic and could score at any moment, which we did.

"We reacted after the 1-0 and scored just before half-time. In the second half, we controlled, not dominated, a little more.

"We didn't play the stupid long ball. We started playing with passes more. That was better to see."

Hiddink was also pleased with Drogba's performance after the Ivorian notched his fourth goal since the Dutchman's arrival as interim coach.

"He's very important, how he's showing his commitment and how he's always busy," said Hiddink.

"He doesn't give you, as a central defender, an easy night. When he scores, it's even better.

"He's doing very well. For the second goal, he came just ahead of his marker. That's a sign that he is sharp."

Essien's strike gave Chelsea a vital away-goal cushion to start the second half with and Hiddink was delighted with the way the Ghanaian performed.

"He is fit, although not game-fit for 90 minutes at this high-paced level," said Hiddink. "But we chose to bring him and play him.

"If you put him on late on then we're probably in a problem scenario. I wanted to be proactive in playing him. His contribution to the team was huge, not just with his goal.

"His fuel was out of his tank after an hour. (Juliano) Belletti, though, is a very clever player and provided a very good assist.

"It is good to see Essien back and, by playing these games, he's getting the practice to play a whole 90 minutes."

Chelsea felt they were denied an equaliser seconds before Essien prodded the ball home.

Drogba's free-kick looked well over the goal-line before Gianluigi Buffon clawed it back but referee Alberto Undiano waved play-on.

Hiddink, though, called for the introduction of technology to finally solve such controversies.

"Technology must be used on this," he added. "Then there won't be a dispute, yes or no.

"We did it in my very early days at PSV in the 1980s and it worked out really well. But the people who were deciding didn't want to know, and that was 20 years ago.

"Now I think the technology is so perfect that, for me, it must be done.

"I'm happy and satisfied with the reaction of the team. Whether it was a justified decision, yes or no - the referee has his problems to see whether it was a goal, and we should help him with that, but the team reacted very well."

Liverpool are also through to the quarter-finals and with the prospect of Arsenal and Manchester United joining them, Hiddink insists he has no preference who he faces in the next round.

Hiddink added: "I heard Liverpool were through as well. That's good for English football.

"From now on in, the games are so tight they can go either way. In the last eight, you play finals but I don't have a particular preference who we might play."