Generalized echo squeezing protocol with near-Heisenberg-limit sensitivity and strong robustness against detection noise and variation in squeezing parameter

Li, Jinyang; Silva, Gregório R. M. da; Kain, Schuyler; Shahriar, Selim

doi:10.1103/physreva.107.032610

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…A one-axis PSI can be used for measuring acceleration along the primary axis and two components of rotation along the axes orthogonal to the primary axis. In a conventional atomic interferometer, the signal is determined by measuring the total population of the atoms in a particular internal quantum state, and there exists a well-developed method for the sensitivity limit analysis for such a detection scheme [12,13]. However, for a PSI, the information about the acceleration and the rate of rotation is distributed spatially over the whole atomic cloud.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of a Point-Source-Interferometry-Based Inertial Measurement Unit Employing Large Momentum Transfer and Launched Atoms

Li,

Kovachy,

Bonacum

et al. 2024

Atoms

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We analyze theoretically the sensitivity of accelerometry and rotation sensing with a point source interferometer employing large momentum transfer (LMT) and present a design of an inertial measurement unit (IMU) that can measure rotation around and acceleration along each of the three axes. In this design, the launching technique is used to realize the LMT process without the need to physically change directions of the Raman pulses, thus significantly simplifying the apparatus. We also describe an explicit scheme for such an IMU.

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Section: Introductionmentioning

confidence: 99%

Sensitivity of a Point-Source-Interferometry-Based Inertial Measurement Unit Employing Large Momentum Transfer and Launched Atoms

Li,

Kovachy,

Bonacum

et al. 2024

Atoms

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Entanglement-enhanced optical atomic clocks

Colombo

Pedrozo-Peñafiel

Vuletić

2022

Applied Physics Letters

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Recent developments in atomic physics have enabled the experimental generation of many-body entangled states to boost the performance of quantum sensors beyond the Standard Quantum Limit (SQL). This limit is imposed by the inherent projection noise of a quantum measurement. In this Perspective article, we describe the commonly used experimental methods to create many-body entangled states to operate quantum sensors beyond the SQL. In particular, we focus on the potential of applying quantum entanglement to state-of-the-art optical atomic clocks. In addition, we present recently developed time-reversal protocols that make use of complex states with high quantum Fisher information without requiring sub-SQL measurement resolution. We discuss the prospects for reaching near-Heisenberg limited quantum metrology based on such protocols.

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