Dynamical low-noise microwave source for cold atom experiments

Meyer, Bernd; Idel, Alexander; Anders, Fabian; Peise, J.; Klempt, Carsten

doi:10.48550/arxiv.2003.10989

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Selection Of a Subensemble In A Specific Spin State1

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2023

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“…Between the optical removals, short waiting times on the order of 10 ms have been implemented to guarantee that the mechanical shutters open and close reliably. The transfer of atoms to the level |1, 0 from the initially prepared level |2, 2 is carried out by a low-noise microwave source [33]. The quantization axis is given by a magnetic field of 0.78 G, which is actively stabilized to a magnetic field sensor, yielding a magnetic field noise of 170 µG.…”

Section: Selection Of a Subensemble In A Specific Spin Statementioning

confidence: 99%

Rapid generation and number-resolved detection of spinor rubidium Bose-Einstein condensates

et al. 2023

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Section: Selection Of a Subensemble In A Specific Spin Statementioning

confidence: 99%

Rapid generation and number-resolved detection of spinor rubidium Bose-Einstein condensates

et al. 2023

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Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates

Pür¹,

Hetzel²,

Martin³

et al. 2023

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High data acquisition rates and low-noise detection of ultracold neutral atoms present important challenges for the state tomography and interferometric application of entangled quantum states in Bose-Einstein condensates. In this article, we present a high-flux source of 87 Rb Bose-Einstein condensates combined with a number-resolving detection. We create Bose-Einstein condensates of 2 × 10 5 atoms with no discernible thermal fraction within 3.3 s using a hybrid evaporation approach in a magnetic/optical trap. For the high-fidelity tomography of many-body quantum states in the spin degree of freedom [1], it is desirable to select a single mode for a number-resolving detection. We demonstrate the low-noise selection of subsamples of up to 16 atoms and their subsequent detection with a counting noise below 0.2 atoms. The presented techniques offer an exciting path towards the creation and analysis of mesoscopic quantum states with unprecedented fidelities, and their exploitation for fundamental and metrological applications. I. HIGH-FLUX SOURCES OF BOSE-EINSTEIN CONDENSATES

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Dynamical low-noise microwave source for cold atom experiments

Cited by 2 publications

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Rapid generation and number-resolved detection of spinor rubidium Bose-Einstein condensates

Rapid generation and number-resolved detection of spinor rubidium Bose-Einstein condensates

Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates

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