Pic joins the team from Marussia while Van der Garde steps up from Caterham's sister team in GP2.
"I’m looking forward to returning to Melbourne, this time for my first race with Caterham F1 Team and I think it’s going to be a good weekend," said Pic.
"After the tests we’re definitely ready to start racing. We have a good idea of where we’re going to start out and I think we have a very interesting season ahead of us. Whatever happens, I’m enjoying myself in Caterham and it’s great to be part of a team that has such an exciting future ahead."
Van der Garde adds that he is fully prepared ahead of his long awaited F1 debut.
"Honestly I can’t wait to get started. Melbourne will be my first Grand Prix start and, even though it’s taken a while to reach this point, I’m completely prepared and really looking forward to getting back to racing," said the Dutch rookie.
"I finished off 2012 with a win in Singapore [GP2], and, while we’re all realistic enough to know we’re not going to be fighting at that end of the grid, I also know I want to be in the right position to take advantage of anything that comes my way when the lights go out."
Team principal Cyril Abiteboul believes that Caterham has made steps forwards over the winter break.
"On the surface it may look like we’re starting 2013 in a similar position to 2012, but inside the team it is very different".
"We have a base in Oxfordshire in which we now control all elements of the design and production in-house. The wind tunnel we use has been upgraded to meet our exact specifications and is now producing results that turn into definite improvements. We are continuing to improve the efficiencies and working practices within the team so we can compete both on track and as a viable business with a secure long-term future and we are bringing in talented people at all levels to keep pushing us forwards."