Showing 2005Show all
2 papers · 1 filter
quant-ph2005
A Quantum Field Theory Twist to Photon Angular Momentum
G. F. Calvo, A. Picon, E. Bagan
A quantum field theory approach is put forward to generalize the concept of classical spatial light beams carrying orbital angular momentum to the single-photon level. This quantiz…
quant-ph2005
Aligning Spatial Frames Through Quantum Channels
E. Bagan, R. Munoz-Tapia
We review the optimal protocols for aligning spatial frames using quantum systems. The communication problem addressed here concerns a type of information that cannot be digitalize…