Quantum-Enhanced Fiber-Optic Gyroscopes Using Quadrature Squeezing and Continuous-Variable Entanglement

Grace, Michael R.; Gagatsos, Christos N.; Zhuang, Quntao; Guha, Saikat

doi:10.1103/physrevapplied.14.034065

Cited by 23 publications

(6 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From an application perspective, DQS can be exploited to address sensing and data-processing problems in different physical domains. For example, a recent theoretical proposal envisages use of DQS to boost the performance of fiber gyroscopes for navigation applications [95]. The idea is to inject multimode entangled light, like what was utilized in the DQS RF-sensing experiment [56], into to an array of fiber gyroscopes to improve the scaling of the measurement noise.…”

Section: Discussionmentioning

confidence: 99%

Distributed quantum sensing

Zhang

Zhuang

2021

Quantum Sci. Technol.

Self Cite

116

View full text Add to dashboard Cite

A plethora of applications hinge on a network or an array of sensors to undertake measurement tasks. A rule of thumb for sensing is that a collective measurement taken by M independent sensors can improve the sensitivity by 1/ √ M, known as the standard quantum limit (SQL). Quantum resources such as entanglement and squeezed light can be harnessed to surpass the SQL. Distributed quantum sensing is an emerging subject dedicated to investigating the performance gain enabled by entangled states shared by multiple sensors in tackling different measurement problems. This Review formulates distributed quantum sensing from a quantuminformation perspective and describes distributed quantum sensing protocols and their experimental demonstrations. The applications enabled by distributed quantum sensing and an outlook for future opportunities will also be discussed.

show abstract

Section: Discussionmentioning

confidence: 99%

Distributed quantum sensing

Zhang

Zhuang

2021

Quantum Sci. Technol.

Self Cite

116

View full text Add to dashboard Cite

show abstract

“…However, the experiments began to really make use of quantum advantages after it was shown that the use of squeezed light in these gyroscopes could raise the sensitivity beyond the SNL [157,158]. Entanglement was also shown to improve sensitivity in various schemes [159][160][161].…”

Section: A Quantum Gyroscopesmentioning

confidence: 99%

Geometric phases and the Sagnac effect: Foundational aspects and sensing applications

Paiva,

Lenny,

Cohen

2021

Preprint

View full text Add to dashboard Cite

Geometric phase is a key player in many areas of quantum science and technology. In this review article, we outline several foundational aspects of quantum geometric phases and their relations to classical geometric phases. We then discuss how the Aharonov-Bohm and Sagnac effects fit into this context. Moreover, we present a concise overview of technological applications of the latter, with special emphasis on gravitational sensing, like in gyroscopes and gravitational wave detectors.

show abstract

“…Moreover, in distributed quantum metrology, a further experimental challenge arises from the need to adaptively optimize the preparation of the probe and of the measurement [ 27 ]. A common approach to avoid adaptivity is limiting the range of values that the unknown parameter is allowed to take, for example, requiring that the parameter is small [ 38 , 39 , 40 , 41 ]. In fact, in the regime of small phases, the transformation the probe undergoes is small enough to make the rotation of the squeezed quadrature negligible, which in turn remains practically unchanged.…”

Section: Introductionmentioning

confidence: 99%

Estimation with Heisenberg-Scaling Sensitivity of a Single Parameter Distributed in an Arbitrary Linear Optical Network

Triggiani

Tamma

2022

Sensors

View full text Add to dashboard Cite

Quantum sensing and quantum metrology propose schemes for the estimation of physical properties, such as lengths, time intervals, and temperatures, achieving enhanced levels of precision beyond the possibilities of classical strategies. However, such an enhanced sensitivity usually comes at a price: the use of probes in highly fragile states, the need to adaptively optimise the estimation schemes to the value of the unknown property we want to estimate, and the limited working range, are some examples of challenges which prevent quantum sensing protocols to be practical for applications. This work reviews two feasible estimation schemes which address these challenges, employing easily realisable resources, i.e., squeezed light, and achieve the desired quantum enhancement of the precision, namely the Heisenberg-scaling sensitivity. In more detail, it is here shown how to overcome, in the estimation of any parameter affecting in a distributed manner multiple components of an arbitrary M-channel linear optical network, the need to iteratively optimise the network. In particular, we show that this is possible with a single-step adaptation of the network based only on a prior knowledge of the parameter achievable through a “classical” shot-noise limited estimation strategy. Furthermore, homodyne measurements with only one detector allow us to achieve Heisenberg-limited estimation of the parameter. We further demonstrate that one can avoid the use of any auxiliary network at the price of simultaneously employing multiple detectors.

show abstract

Quantum-Enhanced Fiber-Optic Gyroscopes Using Quadrature Squeezing and Continuous-Variable Entanglement

Cited by 23 publications

References 39 publications

Distributed quantum sensing

Distributed quantum sensing

Geometric phases and the Sagnac effect: Foundational aspects and sensing applications

Estimation with Heisenberg-Scaling Sensitivity of a Single Parameter Distributed in an Arbitrary Linear Optical Network

Contact Info

Product

Resources

About