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arXiv:1806.10294 · Journal of Optics

Heisenberg-scaling angular displacement estimation with tunable squeezed Bell states

Jiandong Zhang, Zijing Zhang, Longzhu Cen, Jun-Yan Hu, Yuan Zhe Zhao

Published Feb 6, 2019• 1 citation
arXivHTMLPDF

Abstract

Abstract Precise angular displacement estimation provides a route to correct the measurement bases of two parties in quantum teleportation. In this paper, we propose an angular momentum-enhanced estimation protocol deploying tunable squeezed Bell states and parity detection. The Heisenberg-scaling sensitivity and 2 ℓ + 1 -fold super-resolved oscillating fringes with quantum number ℓ are reachable in our protocol. We analyze the effect of tunable factor on sensitivity, and the advantages originating from spin and orbital angular momenta are also discussed.

DOI
10.1088/2040-8986/ab04b7

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