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Enhanced Whispering Gallery Mode Phase Shift using Indistinguishable Photon Pairs

Year: 2024

Type: preprint

Abstract: We present a theoretical investigation of a whispering gallery mode (WGM) resonator coupled to a Mach-Zehnder interferometer (MZI) and show a bimodal coincidence transmission spectrum when the input state is an indistinguishable photon pair. This is due to the doubled WGM phase shift experienced by the path-entangled state in the interferometer. Further, we model the noise in a WGM resonance shift measurement comparing photon pairs with a coherent state. At least a four-fold improvement in the signal-to-noise ratio (SNR) is possible, with clear implications for quantum-enhanced WGM sensing.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2404.17409

Authors: Jones, Callum, Vidiella-Barranco, Antonio, Xavier, Jolly, Vollmer, Frank

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: Conselho Nacional de Desenvolvimento Científico e Tecnológico, Instituto Nacional de Ciência e Tecnologia de Informação Quântica, Engineering and Physical Sciences Research Council, Air Force Office of Scientific Research

Awards: G1008169496, G1288280234, G1523888516, G1677423749, The quantum avian compass probed on the single molecule level, G4341418877, An Optical Single Molecule Scanner of Protein Motion

OpenAlex ID: W4396243908

Cites:

Cited by: 1

Related to: 10