The Sweden international has hit 40 goals in 42 appearances in all competitions this season but will miss Tuesday night's quarter-final second leg at Stamford Bridge after suffering a hamstring injury in PSG's 3-1 victory over their English opponents at the Parc des Princes last week.
|6/1||PSG are 6/1 with William Hill to beat Chelsea without conceding|
"We have the capacity to reach the semi-finals - it will be down to us to show what we can do," the France international told reporters on Monday.
"The fact that Ibrahimovic is absent is a blow for the team, but we have already shown that we can manage without him."
Matuidi conceded, though, that PSG will have to be at their very best to eliminate Jose Mourinho's men.
"It is vital to play a great game against Chelsea and do everything possible to progress," the midfielder warned.
"Chelsea are a team that does not lose many matches, so we must give our maximum to cause them problems.
"The atmosphere in the group is very good, though, and we are all focused."