Super-Sensitive Quantum Metrology without Many-Photon Entanglement

Mayukh Lahiri; Manuel Erhard; Manuel Erhard

doi:10.1364/FIO.2020.JM6A.22

Frontiers in Optics / Laser Science
OSA Technical Digest (Optica Publishing Group, 2020),
paper JM6A.22
•https://doi.org/10.1364/FIO.2020.JM6A.22

Super-Sensitive Quantum Metrology without Many-Photon Entanglement

Mayukh Lahiri and Manuel Erhard

Laser Science 2020

Washington, DC United States
14–17 September 2020
ISBN: 978-1-943580-80-4

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Joint Poster Session IA (JM6A)

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M. Lahiri and M. Erhard, "Super-Sensitive Quantum Metrology without Many-Photon Entanglement," in Frontiers in Optics / Laser Science, B. Lee, C. Mazzali, K. Corwin, and R. Jason Jones, eds., OSA Technical Digest (Optica Publishing Group, 2020), paper JM6A.22.

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Abstract

We present a quantum metrological method that yields the Heisenberg limit without employing a squeezed or a many-particle entangled state. A separable state is used to probe the phase. Entanglement is disadvantageous for our method.

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