  The search for two dimensional quantum spin liquids, exotic magnetic states
with an entangled ground state remaining disordered down to zero temperature,
has been a great challenge in frustrated magnetism during the last decades.
Recently, fractionalized excitations, called spinons, emerging from these
states, have been evidenced in kagome and triangular antiferromagnets. In
contrast, quantum ferromagnetic spin liquids in two dimensions, namely quantum
kagome ices, have been less investigated, yet their classical counterparts
exhibit amazing properties, magnetic monopole crystals as well as magnetic
fragmentation. Here we show that, by applying a magnetic field on the
pyrochlore oxide Nd$_2$Zr$_2$O$_7$, which has been shown to develop three
dimensional quantum magnetic fragmentation in zero field, we are able to reduce
the dimension of the system and to create a dynamic kagome ice state. Our
results open the way to the observation of the quantum kagome ice state which
was recently investigated theoretically.
