Quantum metrology via chaos in a driven Bose-Josephson system

Liu, Wenjie; Zhuang, Min; Zhu, Bo; Huang, Jiahao; Lee, Chaohong

doi:10.1103/physreva.103.023309

Cited by 11 publications

(2 citation statements)

References 59 publications

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“…In order to maximize the benefits of entanglement for a fixed total duration T = T pre + T sen , schemes on concurrent entanglement generation and sensing are proposed [52,53]. Combining these two stages can devote all the time for parameter-encoding and yield better measurement precision with the same temporal resource T. For example, a chaotic quantum sensing scheme based on the continuous harmonic driving is proposed in Bose-Josephson system [54]. By applying nonlinear control pulses to the dynamics of the quantum sensor, quantum enhancements in measurement precision can be achieved [55,56].…”

Section: Introductionmentioning

confidence: 99%

Machine optimized quantum metrology of concurrent entanglement generation and sensing

Huo

Zhuang

Huang

et al. 2022

Quantum Sci. Technol.

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Entanglement is one of the key ingredients for enhancing the measurement precision of quantum sensors. Generally, there is a trade-off between state preparation and sensing within a limited coherence time. To fully exploit temporal resources, concurrent entanglement generation and sensing with designed sequence of rotations are proposed. Based on twist-and-turn dynamics, modulated rotations along only one axis may be sufficient to drive the state to the optimal one for tiny estimated parameter. However, when the estimated parameter is not tiny, it may impact the evolved state and hence degrade the final measurement precision. Here, we introduce another modulated rotations along different axis and find out the optimal control sequences by means of machine optimization. The optimal measurement precision bounds become independent on the estimated parameter, which improves the dynamic range of the machine designed sensors. Particularly, by optimizing the interaction strength for different particle number and the time-modulated rotations along two different axes via machine optimization, the Heisenberg-limited precision scaling can be attained. Our work points out a way for designing optimized quantum-enhanced metrology protocols, which is promising for developing practical quantum sensors.

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Section: Introductionmentioning

confidence: 99%

Machine optimized quantum metrology of concurrent entanglement generation and sensing

Huo

Zhuang

Huang

et al. 2022

Quantum Sci. Technol.

Self Cite

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“…The double-well potential, as a classical model, has been widely used in Bosonic Josephson junction [28,29], matter-wave interferometry [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] and so on. With the development of the techniques for manipulating ultracold atoms, a variety of double-well atom interferometers [30,35] have been introduced to estimate single parameter.…”

Section: Introductionmentioning

confidence: 99%

Two-parameter estimation with three-mode NOON state in a symmetric three-well system

Yao,

Du,

Xing

et al. 2021

Preprint

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We propose a theoretical scheme to realize two-parameter estimation via a Bose-Einstein condensates confined in a symmetric triple-well. The three-mode NOON state is prepared adiabatically as the initial state. Two phase differences between the wells are two parameters to be estimated. With the help of classical and quantum Fisher information, we study the sensitivity of the triplewell on estimating two phase parameters simultaneously. The result shows that the precision of simultaneous estimation of two parameters in a triple-well system can reach the Heisenberg scaling.

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Quantum Metrology in the Noisy Intermediate‐Scale Quantum Era

Jiao,

Wu,

Bai

et al. 2023

Adv Quantum Tech

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Quantum metrology pursues the physical realization of higher‐precision measurements to physical quantities than the classically achievable limit by exploiting quantum features, such as entanglement and squeezing, as resources. It has potential applications in developing next‐generation frequency standards, magnetometers, radar, and navigation. However, the ubiquitous decoherence in the quantum world degrades the quantum resources and forces the precision back to or even worse than the classical limit, which is called the no‐go theorem of noisy quantum metrology and greatly hinders its applications. Therefore, how to realize the promised performance of quantum metrology in realistic noisy situations attracts much attention in recent years. The principle, categories, and applications of quantum metrology are reviewed. Special attention is paid to different quantum resources that can bring quantum superiority in enhancing sensitivity. Then, the no‐go theorem of noisy quantum metrology and its active control under different kinds of noise‐induced decoherence situations are introduced.

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Quantum metrology via chaos in a driven Bose-Josephson system

Cited by 11 publications

References 59 publications

Machine optimized quantum metrology of concurrent entanglement generation and sensing

Machine optimized quantum metrology of concurrent entanglement generation and sensing

Two-parameter estimation with three-mode NOON state in a symmetric three-well system

Quantum Metrology in the Noisy Intermediate‐Scale Quantum Era

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