Optimal matter-wave gravimetry

Kritsotakis, Michail; Szigeti, Stuart S.; Dunningham, Jacob; Haine, Simon A.

doi:10.1103/physreva.98.023629

Cited by 28 publications

(23 citation statements)

References 87 publications

(102 reference statements)

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“…Quantum metrology is an auspicious discipline of science where one makes high precision estimates of unknown parameters [1][2][3][4][5]. The field has numerous applications, including spectroscopy [6,7], magnetometry [8][9][10][11], thermometry [12,13] and gravimetry [14,15]. It has been known that utilizing quantum resources including entanglement allows one to achieve a gain in precision when compared to classical strategies [1,[16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Practical Limits of Error Correction for Quantum Metrology

Shettell,

Munro,

Markham

et al. 2021

Preprint

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Noise is the greatest obstacle in quantum metrology that limits it achievable precision and sensitivity. There are many techniques to mitigate the effect of noise, but this can never be done completely. One commonly proposed technique is to repeatedly apply quantum error correction. Unfortunately, the required repetition frequency needed to recover the Heisenberg limit is unachievable with the existing quantum technologies. In this article we explore the discrete application of quantum error correction with current technological limitations in mind. We establish that quantum error correction can be beneficial and highlight the factors which need to be improved so one can reliably reach the Heisenberg limit level precision.

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Section: Introductionmentioning

confidence: 99%

Practical Limits of Error Correction for Quantum Metrology

Shettell,

Munro,

Markham

et al. 2021

Preprint

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“…Because atoms have well-known properties and give reproducible measurements that can easily be related to SI units, they are ideal candidates for use in a new generation of sensors in the growing field of quantum technologies [20]. For example, atom-based sensors have been used for precise measurements of magnetic fields [21,22] and gravity [23,24] and are beginning to be marketed and used in fields as diverse as biomedical sensing [25], geomagnetic [26], and defense applications [27]. A subclass of atom-based sensors includes those based upon Rydberg atoms, atoms that have been excited to a high principal quantum number n. It has been shown that Rydberg atoms are excellent sensors for weak electromagnetic fields in the radio-frequency, microwave, and THz ranges [28][29][30][31], as well as for trace gas detection [32].…”

Section: Introductionmentioning

confidence: 99%

Full-Field Terahertz Imaging at Kilohertz Frame Rates Using Atomic Vapor

et al. 2020

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There is much interest in employing terahertz (THz) radiation across a range of imaging applications, but so far, technologies have struggled to achieve the necessary frame rates. Here, we demonstrate a THz imaging system based upon efficient THz-to-optical conversion in atomic vapor, where full-field images can be collected at ultrahigh speeds using conventional optical camera technology. For a 0.55-THz field, we show an effective 1-cm 2 sensor with near diffraction-limited spatial resolution and a minimum detectable power of ð190 AE 30Þ fW s −1=2 per ð40 × 40Þ μm 2 pixel capable of video capture at 3000 frames per second. This combination of speed and sensitivity represents a step change in the state of the art of THz imaging and will likely lead to its uptake in wider industrial settings.

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“…A lot of interest has therefore developed in finding ways of improving their performance to gain advantage in different applications. It has been shown that Bose-condensed atomic sources can outperform thermal sources due to their narrow momentum linewidth, despite their reduced atomic flux [3][4][5][6][7]. The use of nonclassical atomic states such as spin-squeezed states can offset this reduction in flux even further by allowing for sensitivities beyond the shot-noise limit (SNL) [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Spin Squeezing of a Bose-Einstein Condensate via Quantum Non-Demolition Measurement for Quantum-Enhanced Atom Interferometry

Kritsotakis,

Dunningham,

Haine

2020

Preprint

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We theoretically investigate the use of quantum non-demolition measurement to enhance the sensitivity of atom interferometry with Bose-condensed atoms. In particular, we are concerned with enhancing existing high-precision atom interferometry apparatuses, so restrict ourselves to dilute atomic samples, and the use of free-propagating light, or optical cavities in the weak-coupling regime. We find the optimum parameter regime that balances between spin squeezing and atomic loss, and find that significant improvements in sensitivity are possible. Finally, we consider the use of squeezed light, and show that this can provide further boosts to sensitivity.

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Optimal matter-wave gravimetry

Cited by 28 publications

References 87 publications

Practical Limits of Error Correction for Quantum Metrology

Practical Limits of Error Correction for Quantum Metrology

Full-Field Terahertz Imaging at Kilohertz Frame Rates Using Atomic Vapor

Spin Squeezing of a Bose-Einstein Condensate via Quantum Non-Demolition Measurement for Quantum-Enhanced Atom Interferometry

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