High-resolution laser spectrometer for matter wave interferometric inertial sensing with non-destructive monitoring of Bloch oscillations

Rivero, Dolores Helena Rodriguez Ferreira; Silva, C. Beli; Armijo, Michelle Alejandra Moreno; Keßler, Hans; Silva, H. F. da; Comito, G.; Shiozaki, R. F.; Teixeira, Renata Cordeiro; Courteille, Ph. W.

doi:10.1007/s00340-022-07772-4

Cited by 4 publications

(8 citation statements)

References 31 publications

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“…In this latter role, the light of laser 1 is passed through AOMs, driven by a tunable radio-frequency ν rf and permitting to ramp the laser frequency ω with respect to the atomic resonance ω a , thus generating a controlled detuning ∆ a = ω − ω a , and with respect to the ring cavity resonance ω c , generating a detuning ∆ c = ω − ω c . On the other hand, we can control the detuning between the cavity and the atomic resonance, ∆ ca = ω c − ω a = ∆ a − ∆ c , via the microwave-frequency ν mw of the DPLL [40].…”

Section: Experiments 1experimental Setupmentioning

confidence: 99%

“…The experimental setup has been presented in detail in [40]. In short, a cloud of about N = 200 000 88 Sr atoms is cooled to temperatures around 1 µK and transferred into the mode volume of a ring cavity operated near the narrow intercombination line with the transition wavelength λ a = 689 nm connecting the energy levels (5s) 2 1 S 0 and (5s5p) 3 P 1 .…”

Section: Experiments 1experimental Setupmentioning

confidence: 99%

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Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime

Rivero,

Pessoa Jr,

de França

et al. 2023

New J. Phys.

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We report on the observation of a novel manifestation of saturation-induced optical bistability in a resonantly pumped optical ring cavity interacting strongly with a cloud of atoms via a narrow atomic transition. The bistability emerges, above a critical pump rate, as an additional peak in the cavity’s normal mode spectrum close to atomic resonance. This third transmission peak is usually suppressed due to strong resonant absorption, but in our experiment it is visible because of the linewidth of the atomic transition being much smaller than that of the cavity, which sets the experiment into the bad-cavity regime. Relying on complete saturation of the transition, this bistability has a quantum origin and cannot be mimicked by a classical material presenting a nonlinear refraction index. The appearance of the central peak in addition to the normal modes is predicted by a semi-classical model derived from the Tavis–Cummings Hamiltonian from which we derive a bistability phase diagram that connects our observations with former work on optical bistability in the good cavity regime. The phase diagram reveals several so far unexplored bistable phases.

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Section: Experiments 1experimental Setupmentioning

confidence: 99%

Section: Experiments 1experimental Setupmentioning

confidence: 99%

Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime

Rivero,

Pessoa Jr,

de França

et al. 2023

New J. Phys.

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“…describing the influence of cavity photon decay on the atomic momentum pair creation. The typical cavity dissipation rates κ/(2π) in ultracold atom experiments range from values on the order of a few MHz [96,97], down to values of a few kHz [24,88]. Note also that free spectral ranges for commonly used cavities are on the order of a few GHz, and in our simulations we fix the detuning at ∆c = −1 GHz.…”

Section: Appendix Bmentioning

confidence: 99%

Quantum enhanced SU(1,1) matter-wave interferometry in a ring cavity

Krešić,

Ackemann

2023

Phys. Rev. A

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Quantum squeezed states offer metrological enhancement as compared to their classical counterparts. Here, we devise and numerically explore a novel method for performing SU(1,1) interferometry beyond the standard quantum limit, using quasi-cyclic nonlinear wave mixing dynamics of ultracold atoms in a ring cavity. The method is based on generating quantum correlations between many atoms via photon mediated optomechanical interaction. Timescales of the interferometer operation are here given by the inverse of photonic recoil frequency, and are orders of magnitude shorter than the timescales of collisional spin-mixing based interferometers. Such shorter timescales should enable not only faster measurement cycles, but also lower atomic losses from the trap during measurement, which may lead to significant quantum metrological gain of matter wave interferometry in state of the art cavity setups.

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“…This chapter describes an experiment and its operation aimed at quantum sensing, as cited in Chapter 1, specifically applied to gravimetry, and outlines the procedures for implementing the pulses of Ramsey-Bordé interferometer (Section 3.5 and Section 4.2). For more details on the experimental description, please refer to (53,54,(69)(70)(71).…”

Section: Methodsmentioning

confidence: 99%

Matter-wave interferometry for quantum sensing

Pessoa Junior

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This dissertation reports on advancements in the construction of a quantum sensor for gravimetry based on matter interferometry. Ultra-cold strontium atoms (in the order of 1 µK) within a ring cavity in the bad cavity regime constitute the experimental setup and two distinct approaches were adopted for the comprehension of the system's operation. The first involved simulations of Ramsey-Bordé pulse sequence, specifically the π/2-π-π/2-spin echo sequence using the 689 nm transition of strontium. The sequence is commonly employed in matter interferometers and the simulations provided insights for future measurements. The expected precision of our system is within ∆g/g < 10 −8 , showcasing its potential accuracy. The second approach focused on monitoring Bloch oscillations resulting from the interaction between atoms and cavity light, which induces a frequency proportional to the external force, in our case, gravity. Efforts were made during the experiment towards confirming the system's regime, leading to a significant observation of nonlinear Normal-mode splitting due to high saturation in the strong coupling regime, exhibiting a bi-stable behaviour.

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High-resolution laser spectrometer for matter wave interferometric inertial sensing with non-destructive monitoring of Bloch oscillations

Cited by 4 publications

References 31 publications

Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime

Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime

Quantum enhanced SU(1,1) matter-wave interferometry in a ring cavity

Matter-wave interferometry for quantum sensing

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