High-Capacity Spatial Multimode Quantum Memories Based on Atomic Ensembles

TY - JOUR

T1 - High-Capacity Spatial Multimode Quantum Memories Based on Atomic Ensembles

AU - dpz242, dpz242

AU - Zeuthen, Emil

AU - Sørensen, Anders Søndberg

PY - 2012/9/27

Y1 - 2012/9/27

N2 - We study spatial multimode quantum memories based on light storage in extended ensembles of Λ-type atoms. We show that such quantum light-matter interfaces allow for highly efficient storage of many spatial modes. In particular, forward operating memories possess excellent scaling with the important physical parameters: quadratic scaling with the Fresnel number and even cubic with the optical depth of the atomic ensemble. Thus, the simultaneous use of both the longitudinal and transverse shape of the stored spin wave modes constitutes a valuable and so far overlooked resource for multimode quantum memories.

AB - We study spatial multimode quantum memories based on light storage in extended ensembles of Λ-type atoms. We show that such quantum light-matter interfaces allow for highly efficient storage of many spatial modes. In particular, forward operating memories possess excellent scaling with the important physical parameters: quadratic scaling with the Fresnel number and even cubic with the optical depth of the atomic ensemble. Thus, the simultaneous use of both the longitudinal and transverse shape of the stored spin wave modes constitutes a valuable and so far overlooked resource for multimode quantum memories.

U2 - 10.1103/PhysRevLett.109.133601

DO - 10.1103/PhysRevLett.109.133601

M3 - Journal article

C2 - 23030088

SN - 0031-9007

VL - 109

SP - 133601

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

ER -