Optical Memory for Arbitrary Perfect Poincaré States in an Atomic Ensemble

Abstract

Inherent spin angular momentum (SAM) and orbital angular momentum (OAM) which manifest as polarization and spatial degrees of freedom (DOF) of photons, hold a promise of large capability for applications in classical and quantum information processing. To enable these photonic spin and orbital dynamic properties strongly coupled with each other, Poincaré states have been proposed and offer advantages in data multiplexing, information encryption, precision metrology, and quantum memory. However, since the transverse size of Laguerre Gaussian beams strongly depends on their topological charge numbers $\left|l\right|$, it is difficult to store asymmetric Poincaré states due to the significantly different light-matter interaction for distinct spatial modes. Here, we experimentally realize the storage of perfect Poincaré states with arbitrary OAM quanta using the perfect optical vortex, in which 121 arbitrarily-selected perfect Poincaré states have been stored with high fidelity. The reported work has great prospects in optical communication and quantum networks for dramatically increased encoding flexibility of information.

References in corpus (15)

• Storage and retrieval of single photons transmitted between remote quantum memories
• A quantum memory for orbital angular momentum photonic qubits
• 4 X 20 Gbit/s mode division multiplexing over free space using vector modes and a q-plate mode (de)multiplexer
• Quantum Storage of Orbital Angular Momentum Entanglement in an Atomic Ensemble
• Storage and retrieval of vector beams of light in a multiple-degree-of-freedom quantum memory
• A millisecond quantum memory for scalable quantum networks
• Highly efficient coherent optical memory based on electromagnetically induced transparency
• Single-Photon-Level Quantum Image Memory Based on Cold Atomic Ensembles
• Experimental realization of a multiplexed quantum memory with 225 individually accessible memory cells
• Spatially dependent electromagnetically induced transparency
• Long lifetime and high-fidelity quantum memory of photonic polarization qubit by lifting Zeeman degeneracy
• Wavevector multiplexed quantum memory via spatially-resolved single-photon detection
• A cold atom temporally multiplexed quantum memory with cavity-enhanced noise suppression
• Storing High-Dimensional Quantum States in a Cold Atomic Ensemble
• Synchronized resistance to inhomogeneous magnetic field-induced dephasing of an image stored in a cold atomic ensemble