A tactical tweak midway through the first half, pushing Son Heung-min and Christian Eriksen wider, also gave Spurs greater control.
Tottenham had hoped to kick off the new season at their new home but that was put back to September then delayed indefinitely as delays on the construction of the impressive-looking venue persisted.
But Pochettino thinks the stadium will be complete in time to host a Champions League quarter-final on April 9/10 or 16/17.
In August I think plenty of supporters, whatever the colours they wear, were looking forward to experiencing Tottenham Hotspur's new stadium. "The wish is to play".
They took a 3-0 lead to Dortmund from the first leg in London and survived a barrage in the opening half hour which was a tribute to their resilience and maturity in defence.
Their advancement to the last eight represents progression for Pochettino's men after they exited the competition at the last 16 previous year and the boss hailed it as a "fantastic achievement".
Orange wall Lloris gets down low to deny Julian Weigl one of a number of impressive saves from the goalkeeper
"Now we can enjoy because it's a big achievement", Lloris told reporters.
"We fully deserved this".
Indeed, against only Chelsea has he scored more goals, although he has drawn a blank in his last two meetings with the Saints having netted in each of his first four.
The Spurs fans have been denied so far this season and I feel for them but around the country there will be intrigue as to whether it will live up to the hype.
Madrid, who were missing inspirational captain Sergio Ramos through suspension and hit the woodwork twice in the first half, came out stronger after the interval but were dealt a fatal blow when Serbia global Tadic crowned his sensational display by hammering into the top corner in the 62nd minute.
Said Dortmund sporting director Michael Zorc: "After their goal, we were done.
It is so important to be in the quarter-final, but you need to show more if you want to be at the next level".
Ex-White House counsel calls Robert Mueller 'American hero'
Where do Democrats go from here? And most of " The View " co-hosts greeted all of these developments with glee. Cobb explained that he expected Mueller's findings to show no evidence of wrongdoing by the president.