Quantum Enhanced Cavity QED Interferometer with Partially Delocalized Atoms in Lattices

Chu, Anjun; He, Peiru; Thompson, James K.; Rey, Ana María

doi:10.1103/physrevlett.127.210401

Cited by 12 publications

(4 citation statements)

References 47 publications

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“…1(d) and Eq. ( 6)] and is competitive with the best sensitivities achievable with the paradigmatic approach of one-axis twisting when decoherence is properly accounted for [64][65][66].…”

Section: (A) the Final Pulse Converts The Rotation ûφ Into A Measurab...mentioning

confidence: 99%

Bosonic pair production and squeezing for optical phase measurements in long-lived dipoles coupled to a cavity

Sundar¹,

Barberena²,

Orioli³

et al. 2022

Preprint

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“…1(d) and Eq. ( 6)] and is competitive with the best sensitivities achievable with the paradigmatic approach of one-axis twisting when decoherence is properly accounted for [64][65][66].…”

Section: (A) the Final Pulse Converts The Rotation ûφ Into A Measurab...mentioning

confidence: 99%

Bosonic pair production and squeezing for optical phase measurements in long-lived dipoles coupled to a cavity

Sundar¹,

Barberena²,

Orioli³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

“…The rich ensuing dynamics in turn open up possibilities to use these systems to simulate fundamental solid-state physical systems and explore non-equilibrium many-body phenomena beyond the scope of conventional condensed matter systems [3]. Moreover, due to the presence of non-classical correlations and the feasibility of non-destructive monitoring of these systems through photons leaking from the cavity mirrors, they serve as an ideal platform for precise measurements of unknown physical parameters beyond the standard quantum limit [4][5][6][7][8][9][10][11][12]. Therefore, quantum-gas cavity quantum electrodynamics systems may lead to the development of new paradigms in quantum metrology.…”

Section: Introductionmentioning

confidence: 99%

Understanding and Improving Critical Metrology. Quenching Superradiant Light-Matter Systems Beyond the Critical Point

Gietka

Ruks

Busch

2022

Quantum

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We carefully examine critical metrology and present an improved critical quantum metrology protocol which relies on quenching a system exhibiting a superradiant quantum phase transition beyond its critical point. We show that this approach can lead to an exponential increase of the quantum Fisher information in time with respect to existing critical quantum metrology protocols relying on quenching close to the critical point and observing power law behaviour. We demonstrate that the Cramér-Rao bound can be saturated in our protocol through the standard homodyne detection scheme. We explicitly show its advantage using the archetypal setting of the Dicke model and explore a quantum gas coupled to a single-mode cavity field as a potential platform. In this case an additional exponential enhancement of the quantum Fisher information can in practice be observed with the number of atoms N in the cavity, even in the absence of N-body coupling terms.

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“…Quantum correlated squeezed and entangled states can be used for quantum enhanced measurements, which go beyond classical metrology [42,43]. In this context, squeezing and entanglement of the internal atomic degrees of freedom [44][45][46][47][48][49][50][51][52][53][54][55], but recently also the external ones [56][57][58][59][60], have been recognized as attractive tools for metrological applications.…”

mentioning

confidence: 99%

Generating Multiparticle Entangled States by Self-Organization of Driven Ultracold Atoms

Krešić,

Robb,

Oppo

et al. 2023

Phys. Rev. Lett.

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We describe a mechanism for guiding the dynamical evolution of ultracold atomic motional degrees of freedom toward multiparticle entangled Dicke-squeezed states, via nonlinear self-organization under external driving. Two examples of many-body models are investigated. In the first model, the external drive is a temporally oscillating magnetic field leading to self-organization by interatomic scattering. In the second model, the drive is a pump laser leading to transverse self-organization by photon-atom scattering in a ring cavity. We numerically demonstrate the generation of multiparticle entangled states of atomic motion and discuss prospective experimental realizations of the models. For the cavity case, the calculations with adiabatically eliminated photonic sidebands show significant momentum entanglement generation can occur even in the "bad cavity" regime. The results highlight the potential for using self-organization of atomic motion in quantum technological applications.

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Quantum Enhanced Cavity QED Interferometer with Partially Delocalized Atoms in Lattices

Cited by 12 publications

References 47 publications

Bosonic pair production and squeezing for optical phase measurements in long-lived dipoles coupled to a cavity

Bosonic pair production and squeezing for optical phase measurements in long-lived dipoles coupled to a cavity

Understanding and Improving Critical Metrology. Quenching Superradiant Light-Matter Systems Beyond the Critical Point

Generating Multiparticle Entangled States by Self-Organization of Driven Ultracold Atoms

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