Björn Lauritzen

Demonstration of atomic frequency comb memory for light with spin-wave storage (2009)

Afzelius, Mikael, Usmani, Imam, Amari, Atia, Lauritzen, Björn, Walther, Andreas, Simon, Christoph, ...

We present a light-storage experiment where the light is mapped onto an inhomogeneously broadened optical transition in a praseodymium-doped crystal, which is shaped into an atomic frequency comb....

Solid state quantum memory for photons at telecommunication wavelengths (2009)

Lauritzen, Björn, Minář, Jiří, De Riedmatten, Hugues, Afzelius, Mikael, Sangouard, Nicolas, Simon, Christoph, ...

We demonstrate experimentally a solid-state quantum memory for photons at telecommunication wavelengths. Weak light fields at the single photon level are stored for a time up to 600 ns in an...

Electric control of collective atomic coherence in an Erbium doped solid (2009)

Minář, Jiří, Lauritzen, Björn, De Riedmatten, Hugues, Afzelius, Mikael, Simon, Christoph, Gisin, Nicolas

We demonstrate fast and accurate control of the evolution of collective atomic coherences in an Erbium doped solid using external electric fields. This is achieved by controlling the inhomogeneous...