Dressed-state electromagnetically induced transparency for light storage in uniform-phase spin waves

Šibalić, Nikola; Kondo, Jorge M.; Adams, Charles S.; Weatherill, Kevin J.

doi:10.1103/physreva.94.033840

Cited by 23 publications

(19 citation statements)

References 57 publications

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“…Time delay, thermal vapors [43] offer a reliable platform for quantum state engineering. The addition of external magnetic fields allows for selective excitation and observation of well-defined simple systems that can be completely and accurately modelled [19,20].…”

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confidence: 99%

Single-Photon Interference due to Motion in an Atomic Collective Excitation

et al. 2017

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We experimentally demonstrate the heralded generation of bichromatic single photons from an atomic collective spin excitation (CSE). The photon arrival times display collective quantum beats, a novel interference effect resulting from the relative motion of atoms in the CSE. A combination of velocity-selective excitation with strong laser dressing and the addition of a magnetic field allows for exquisite control of this collective beat phenomenon. The present experiment uses a diamond scheme with near-IR photons that can be extended to include telecommunications wavelengths or modified to allow storage and retrieval in an inverted-Y scheme.

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confidence: 99%

Single-Photon Interference due to Motion in an Atomic Collective Excitation

et al. 2017

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“…Experimental implementation of Doppler-free Rydberg state spectroscopy in warm vapors have not yet demonstrated significant benefits to our knowledge. One reason for this is that other broadening effects (such as transit broadening) can be equally limiting [36]. It is also worth noting that Dopplerfree excitation schemes are not equivalent to the zerovelocity treatment presented here, since a large distribution of single-photon detunings will remain.…”

Section: Discussionmentioning

confidence: 96%

Optimal Atomic Quantum Sensing using EIT Readout

Meyer,

O'Brien,

Fahey

et al. 2021

Preprint

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Quantum sensors offer the capability to reach unprecedented precision by utilizing large quantities of identical atoms and resolving signals down to the standard quantum limit (SQL) governed by individual wave-function collapse. The ability to achieve quantum-limited sensing depends on the interrogation method. We derive the optimum sensitivity of a three-level quantum sensor based on electromagnetically-induced transparency (EIT) or, more generally, coherent spectroscopy, and compare this to the SQL while allowing for strong probing fields, thermal broadening, and large optical depth. We derive the optimal laser intensities and optical depth, providing specific guidelines for sensitive operation under common experimental conditions. Clear boundaries of performance are established, revealing that ladder-EIT can not achieve the SQL due to unavoidable associated absorption loss. This work is particularly relevant for emerging electric-field sensors that rely on EIT spectroscopy of Rydberg states.

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“…This subsequently allows for a very large effective spin wave at the point of excitation. Experimentally, such schemes were implemented in the past 26 . These require the careful alignment and the suppression of aberrations in all three beams such that the effective k -vector is reduced to zero.…”

Section: Introductionmentioning

confidence: 99%

Two Step Excitation in Hot Atomic Sodium Vapor

Docters

Wrachtrup

Gerhardt

2017

Sci Rep

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A two step excitation scheme in hot atomic sodium vapor is experimentally investigated. The observed effects reflect a coupling between the 32S, 32P and the 32D states. We present the relative dependence on detuning of the two utilized lasers around λ = 589 nm and 819 nm. Unlike expected, we achieve a higher detuning dependence of the probe and the coupling laser by a factor of approximately three. The presented work aimed for a Rydberg excitation and quantum light storage. Such schemes are usually implemented with a red laser on the D-line transition and a coupling laser of shorter (typically blue) wavelength. Due to the fact that higher P-Rydberg states are approximately two times higher in energy than the 32D state, a two photon transition from the atomic excited 32P state to a Rydberg P state is feasible. This might circumvent laser frequency doubling whereby only two lasers might mediate a three photon process. The scheme of adding three k-vectors allows for electromagnetically induced transparency experiments in which the resulting k-vector can be effectively reduced to zero. By measurements utilizing electric fields and an analysis of the emission spectrum of the atomic vapor, we can exclude the excitation of the P-P two photon transition.

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Dressed-state electromagnetically induced transparency for light storage in uniform-phase spin waves

Cited by 23 publications

References 57 publications

Single-Photon Interference due to Motion in an Atomic Collective Excitation

Single-Photon Interference due to Motion in an Atomic Collective Excitation

Optimal Atomic Quantum Sensing using EIT Readout

Two Step Excitation in Hot Atomic Sodium Vapor

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