The lab is located in Collège de France in central Paris.  The intersection is Rue Saint Jacques and Rue des Ecoles.  It is accessible by light rail (RER, St-Michel-Notre-Dame or Luxembourg) and metro (Line 10, Maubert-Mutualité).  Public transportation directions can be found at Vianavigo.  There are several Velib (shared city bike) kiosks nearby of which the closest is 39 rue des Ecoles.

The lab is on the first floor of Building E, the Institute of Physics.  Upon arrival, if entering through the main entrance, ask for Girit at the front desk or call the lab at +33144271366.  You can also enter through the back entrance on Rue Beauvais which is closer to the lab (see map below) but in that case you must call with your own phone.

See People for contact information of group members.