Quantum-enhanced interferometry with asymmetric beam splitters

• URL: http://arxiv.org/abs/2001.00302v1
• Date: Thu, 2 Jan 2020 02:43:20 GMT
• Title: Quantum-enhanced interferometry with asymmetric beam splitters
• Authors: Wei Zhong, Fan Wang, Lan Zhou, Peng Xu and Yu-Bo Sheng
• Abstract summary: We present the optimal conditions for the transmission ratio and the phase of the beam splitter to gain the highest sensitivities for a general class of non-classical states with parity symmetry. We also address the controversial question of whether the scheme with a combination of coherent state and photon-added or photon-subtracted squeezed vacuum state is better or worse than the most celebrated one.
• Score: 16.789109576626373
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we investigate the phase sensitivities in two-path optical interferometry with asymmetric beam splitters. Here, we present the optimal conditions for the transmission ratio and the phase of the beam splitter to gain the highest sensitivities for a general class of non-classical states with parity symmetry. Additionally, we address the controversial question of whether the scheme with a combination of coherent state and photon-added or photon-subtracted squeezed vacuum state is better or worse than the most celebrated one using a combination of coherent state and squeezed vacuum state.

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