Quantum sensor network metrology with bright solitons

Tsarev, D.; Osipov, S.; Lee, R.; Alodjants, A.; Kulik, S.

Авторы: Tsarev Dmitriy, Osipov Stepan, Lee Ray-Kuang, Alodjants Alexander, Kulik Sergei
Журнал: Physical Review A - Atomic, Molecular, and Optical Physics
Том: 108
Год издания: 2023
Издательство: American Physical Society
Местоположение издательства: United States
Первая страница: 062612
Номер статьи: 062612
DOI: 10.1103/PhysRevA.108.062612
Аннотация: We consider a multiparameter quantum metrology problem with bright soliton networks in the presenceof weak losses. We introduce the general Heisenberg limit (GHL) σχ = 1/Nk that characterizes fundamentallimitations for unknown parameter measurement and estimation accuracy σχ within linear (k = 1) and nonlinear(k = 3) quantum metrology approaches to solitons. We examine multipartite NOON states specially preparedfor the improvement of multiparameter estimation protocols. As a particular example of producing such states,we propose a three-mode soliton Josephson-junction (TMSJJ) model as a three-mode extension for the solitonJosephson-junction bosonic model, which we previously proposed. The energy spectrum of the TMSJJ exhibitssharp phase transition peculiarities for the TMSJJ ground state. The transition occurs from a Gaussian-like(coherent) state to the superposition of entangled Fock states, which rapidly approach the three-mode NOONstate. We show that in the presence of weak losses the TMSJJ enables saturation scaling relevant to the optimalstate limit close to the GHL. Our findings open prospects for quantum network sensorics with atomtronic circuits.
Добавил в систему: Кулик Сергей Павлович

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