Object Identification Using Correlated Orbital Angular Momentum States

High-capacity imaging and rotationally insensitive object identification with correlated orbital angular momentum states

Using no conventional measurements in position space, information extraction rates exceeding one bit per photon are achieved by employing high-dimensional correlated orbital angular momentum (OAM) states for object recognition. The correlations are shown to be insensitive to axial rotation of the target object: The information structure of an object's joint OAM coincidence spectrum is unchanged...

Two-photon spiral imaging with correlated orbital angular momentum states

David S. Simon1,2 and Alexander V. Sergienko1,3,4 1Department of Electrical and Computer Engineering, Boston University, 8 Saint Mary’s Street, Boston, Massachusetts 02215, USA 2Department of Physics and Astronomy, Stonehill College, 320 Washington Street, Easton, Massachusetts 02357, USA 3Photonics Center, Boston University, 8 Saint Mary’s Street, Boston, Massachusetts 02215, USA 4Department o...

Microwave imaging of spinning object using orbital angular momentum

Detection of a spinning object using light's orbital angular momentum.

The linear Doppler shift is widely used to infer the velocity of approaching objects, but this shift does not detect rotation. By analyzing the orbital angular momentum of the light scattered from a spinning object, we observed a frequency shift proportional to product of the rotation frequency of the object and the orbital angular momentum of the light. This rotational frequency shift was stil...

Efficient Identification of Objects Carrying Elements of High-Order Symmetry By Using Correlated Orbital Angular Momentum \(OAM\) States

A major contributions of Wigner’s work was the introduction of group theory to study both the dynamics and the classification of states in quantum mechanics. The use of rotational symmetry to study the properties of angular momentum eigenstates is particularly associated with him. Following along a similar path, it is shown here that advances in the study of entangled and correlated two-photon ...