Diamond in tellurite glass: a new medium for quantum information

Quantum mechanics has defi ned twentieth century technology
and quantum information science has been identifi ed as potentially
one of the most disruptive technologies of the twentyfi
rst century. [ 1 ] A major challenge for the development of this
fi eld is the requirement to create a quantum-classical interface
to effi ciently allow quantum information to be integrated
with a photonic backbone. As such, componentry needs to be
developed that places quantum emitters in the bound modes
of photonic structures. In recent years, diamond color centers
have become one of the most important platforms to exhibit
room-temperature quantum effects. [ 2 ] Here we demonstrate a
new medium suitable for quantum information consisting of
diamond nanocrystals embedded in a tellurite glass, and have
taken this material through an optical fi ber drawing process.
Single photon emission was demonstrated from the drawn
material. By including diamond color centers within a soft
glass we open the possibility of leveraging all of the designs of
microstructured optical fi bers [ 3 ] and optical cavities to integrate
quantum emitters with bound optical modes.