Atom-Based Vector Microwave Electrometry Using Rubidium Rydberg Atoms in a Vapor Cell

Sedlacek, Jonathon; Schwettmann, Arne; Kübler, Harald; Shaffer, James P.

doi:10.1103/physrevlett.111.063001

Cited by 280 publications

(191 citation statements)

References 39 publications

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“…Quantum metrology has been used for ultra precise gravitational wave searches [4,5], frequency calibration in atomic spectroscopy [6], sub-classical quantum lithography [7,8] and entanglement-assisted magnetometry [9] and electrometry [10] to name a few.…”

Section: Introductionmentioning

confidence: 99%

Gravitational parameter estimation in a waveguide

et al. 2014

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We investigate the intrinsic uncertainty in the accuracy to which a static spacetime can be measured from scattering experiments. In particular, we focus on the Schwarzschild black hole and a spatially kinked metric that has some mathematical resemblance to an expanding universe. Under selected conditions we find that the scattering problem can be framed in terms of a lossy bosonic channel, which allows us to identify shot-noise scaling as the ultimate scaling-limit to the estimation of the spacetimes. Fock state probes with particle counting measurements attain this ultimate scaling limit and the scaling constants for each spacetime are computed and compared to the practical strategies of coherent state probes with heterodyne and homodyne measurements. A promising avenue to analyze the quantum-limit of the analogue spacetimes in optical waveguides is suggested.

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Section: Introductionmentioning

confidence: 99%

Gravitational parameter estimation in a waveguide

et al. 2014

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“…Consequently, the modified optical response of a Rydberg EIT medium [23] also provides a powerful tool to probe and image both DC electric [24][25][26][27] and microwave fields [28][29][30][31][32]. The application of external fields can also be used to enhance the effective photon interactions by introducing resonant dipole interactions: microwaves can directly couple to adjacent Rydberg states [13,33], while the Stark shift resulting from a DC electric field can tune the interactions at a Förster resonance [34].…”

Section: Introductionmentioning

confidence: 99%

A high repetition rate experimental setup for quantum non-linear optics with cold Rydberg atoms

Busche

Ball

Huillery

2016

Eur. Phys. J. Spec. Top.

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Abstract. Using electromagnetically induced transparency and photon storage, the strong dipolar interactions between Rydberg atoms and the resulting dipole blockade can be mapped onto light fields to realise optical non-linearities and interactions at the single photon level. We report on the realisation of an experimental apparatus designed to study interactions between single photons stored as Rydberg excitations in optically trapped microscopic ensembles of ultracold 87 Rb atoms. A pair of in-vacuum high numerical aperture lenses focus excitation and trapping beams down to 1 μm, well below the Rydberg blockade. Thanks to efficient magneto-optical trap (MOT) loading from an atomic beam generated by a 2D MOT and the ability to recycle the microscopic ensembles more than 20000 times without significant atom loss, we achieve effective repetition rates exceeding 110 kHz to obtain good photon counting statistics on reasonable time scales. To demonstrate the functionality of the setup, we present evidence of strong photon interactions including saturation of photon storage and the retrieval of non-classical light. Using in-vacuum antennae operating at up to 40 GHz, we perform microwave spectroscopy on photons stored as Rydberg excitations and observe an interaction induced change in lineshape depending on the number of stored photons.

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“…The resulting rich behavior of Rydberg atoms in electric fields has been exploited for a wide range of experiments. Recently, Rydberg atoms have been developed as sensors to measure microwave electric fields with results superior to traditional methods [1,2]. The Rydberg electron wave function is easily perturbed by the image charge produced in a nearby metal surface and hence Rydberg atoms have been used as a sensitive probe of atomsurface interactions [3] and to measure electric fields near the surface of atom chips [4].…”

Section: Introductionmentioning

confidence: 99%

Quantum interference in the field ionization of Rydberg atoms

et al. 2015

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We excite ultracold rubidium atoms in a magneto-optical trap to a coherent superposition of the three |m j | sublevels of the 37d 5/2 Rydberg state. After some delay, during which the relative phases of the superposition components can evolve, we apply an electric field pulse to ionize the Rydberg electron and send it to a detector. The electron traverses many avoided crossings in the Stark levels as it ionizes. The net effect of the transitions at these crossings is to mix the amplitudes of the initial superposition into the same final states at ionization. Similar to a Mach-Zehnder interferometer, the three initial superposition components have multiple paths by which they can arrive at ionization and, since the phases of those paths differ, we observe quantum beats as a function of the delay time between excitation and initiation of the ionization pulse. We present a fully quantum-mechanical calculation of the electron's path to ionization and the resulting interference pattern.

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Atom-Based Vector Microwave Electrometry Using Rubidium Rydberg Atoms in a Vapor Cell

Cited by 280 publications

References 39 publications

Gravitational parameter estimation in a waveguide

Gravitational parameter estimation in a waveguide

A high repetition rate experimental setup for quantum non-linear optics with cold Rydberg atoms

Quantum interference in the field ionization of Rydberg atoms

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