Atom Interferometry with Floquet Atom Optics

Wilkason, Thomas; Nantel, Megan; Rudolph, Jan; Jiang, Yong; Garber, Benjamin E.; Swan, Hunter; Carman, Samuel P.; Abe, Mahiro; Hogan, Jason

doi:10.1103/physrevlett.129.183202

Cited by 30 publications

(8 citation statements)

References 48 publications

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“…In principle, devices can operate at reduced T time to achieve the same sensitivity, which would result in more compact instruments. Demonstrations in laboratory systems have shown in excess of 400hk of photon momentum in an interferometry sequence, using optimised pulse schemes to achieve high fidelity atom optics [152], which if implemented in portable gravimeters brings the sensitivity of atom interferometers far higher than their classical counterparts. Large momentum transfer is a key requirement for future atom interferometry dark matter and gravitational wave detectors, where photon momenta of >10 3 are required [153,154].…”

Section: Physics Routes To Improved Sensorsmentioning

confidence: 99%

Advances in Portable Atom Interferometry-Based Gravity Sensing

Vovrosh,

Dragomir,

Stray

et al. 2023

Sensors

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Gravity sensing is a valuable technique used for several applications, including fundamental physics, civil engineering, metrology, geology, and resource exploration. While classical gravimeters have proven useful, they face limitations, such as mechanical wear on the test masses, resulting in drift, and limited measurement speeds, hindering their use for long-term monitoring, as well as the need to average out microseismic vibrations, limiting their speed of data acquisition. Emerging sensors based on atom interferometry for gravity measurements could offer promising solutions to these limitations, and are currently advancing towards portable devices for real-world applications. This article provides a brief state-of-the-art review of portable atom interferometry-based quantum sensors and provides a perspective on routes towards improved sensors.

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Section: Physics Routes To Improved Sensorsmentioning

confidence: 99%

Advances in Portable Atom Interferometry-Based Gravity Sensing

Vovrosh,

Dragomir,

Stray

et al. 2023

Sensors

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show abstract

“…One promising solution is to engineer more advanced Bragg pulses that are robust to such variations using quantum optimal control techniques. In atom interferometry, quantum control schemes including composite pulses [49][50][51], shaped pulses [52,53], adiabatic rapid passage (ARP) [54], and numerical optimal control [55][56][57] have been applied to Raman transitions with alkalis, while Floquet pulse engineering has been applied to single-photon atom optics on the 1 S 0 → 3 P 1 transition of Sr [58]. Existing optimal control applications to Bragg diffraction have explored numerical optimization of single order pulses in combination with higher order ARP [59][60][61].…”

Section: Introductionmentioning

confidence: 99%

Robust atom optics for Bragg atom interferometry

et al. 2023

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Multi-photon Bragg diffraction is a powerful method for fast, coherent momentum transfer of atom waves. However, laser noise, Doppler detunings, and cloud expansion limit its efficiency in large momentum transfer (LMT) pulse sequences. We present simulation studies of robust Bragg pulses developed through numerical quantum optimal control. Optimized pulse performance under noise and cloud inhomogeneities is analyzed and compared to analogous Gaussian and adiabatic rapid passage pulses in simulated LMT Mach-Zehnder interferometry sequences. The optimized pulses maintain robust population transfer and phase response over a broader range of noise, resulting in superior contrast in LMT sequences with thermal atom clouds and intensity inhomogeneities. Large optimized LMT sequences use lower pulse area than Gaussian pulses, making them less susceptible to spontaneous emission loss. The optimized sequences maintain over five times better contrast with tens of $\hbar k$ momentum separation and offers more improvement with greater LMT. Such pulses could allow operation of Bragg atom interferometers with unprecedented sensitivity, improved contrast, and hotter atom sources.

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“…Different largemomentum-transfer schemes have been demonstrated so far. They are based on repeated stimulated Raman transitions [29], Raman composite pulses [30], Raman double diffraction [31], Raman adiabatic rapid passage [32,33], Bragg diffraction [34,35], and Floquet atom optics [36]. In a rubidium atom interferometer, the two hyperfine levels of the ground state provide a very good approximation of a two-level system when coupled with Raman lasers having a large detuning from the single photon transition.…”

mentioning

confidence: 99%

Atom Interferometry with Rb Blue Transitions

Salvi,

Cacciapuoti,

Tino

et al. 2023

Phys. Rev. Lett.

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We demonstrate a novel scheme for Raman-pulse and Bragg-pulse atom interferometry based on the 5S-6P blue transitions of 87 Rb that provides an increase by a factor ∼2 of the interferometer phase due to accelerations with respect to the commonly used infrared transition at 780 nm. A narrow-linewidth laser system generating more than 1 W of light in the 420-422 nm range was developed for this purpose. Used as a cold-atom gravity gradiometer, our Raman interferometer attains a stability to differential acceleration measurements of 1 × 10 −8 g at 1 s and 2 × 10 −10 g after 2000 s of integration time. When operated on firstorder Bragg transitions, the interferometer shows a stability of 6 × 10 −8 g at 1 s, averaging to 1 × 10 −9 g after 2000 s of integration time. The instrument sensitivity, currently limited by the noise due to spontaneous emission, can be further improved by increasing the laser power and the detuning from the atomic resonance. The present scheme is attractive for high-precision experiments as, in particular, for the determination of the Newtonian gravitational constant.

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Atom Interferometry with Floquet Atom Optics

Cited by 30 publications

References 48 publications

Advances in Portable Atom Interferometry-Based Gravity Sensing

Advances in Portable Atom Interferometry-Based Gravity Sensing

Robust atom optics for Bragg atom interferometry

Atom Interferometry with Rb Blue Transitions

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