Quantum beats observed in time resolved X-ray interference experiments

Rode, G.; Jex, H.

doi:10.1016/s0375-9601(98)00899-8

Cited by 5 publications

(8 citation statements)

References 13 publications

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“…The phase shifter was made of 100 mm thick plastic foil the X-ray beams inside the interferometer. The geometrical dimensions are given in paper [13]. We achieved an interference contrast of about 75% in the direct beam and in the Laue beam as well.…”

Section: Methodsmentioning

confidence: 83%

“…A first contribution in this field using an LLL-interferometer and X-rays interacting with one sound wave was published by Follath and Jex [12] in time resolved interferometry. The first quantum beat patterns from two sound waves with different frequency in an interferometer were presented by Rode and Jex [13]. It is the aim of the present article to elucidate the quantum beat pattern in more detail.…”

Section: Introductionmentioning

confidence: 87%

“…The experimental set-up has been described in our previous paper [13]. Therefore, we summarise and repeat here only relevant details and special modifications.…”

Section: Methodsmentioning

confidence: 99%

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Quantum Beats in Time Resolved X-Ray Interference Experiments

Rode

Jex

2000

phys. stat. sol. (b)

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We have employed LLL-type X-ray interferometers with a splitted mirror crystal and quartz crystals attached aside each mirror. Ultrasound waves of different frequencies f 1 and f 2 around 10 MHz are fed into these mirrors. The ultrasound modulations of the coherently splitted X-ray beams inside the interferometer are analysed in time resolved interference experiments correlating the phase of the phonons with the registration time of the photons. In the interference intensity we observe quantum beat frequencies down to Df = 96 mHz (in energy scale DE = h Df = 397 atto-eV) as well as the two ultrasound frequencies and their overtones mf 1 and nf 2 (m, n = 1, 2, 3) and the sum frequency Sf = f 1 + f 2 .

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Section: Methodsmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 87%

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Quantum Beats in Time Resolved X-Ray Interference Experiments

Rode

Jex

2000

phys. stat. sol. (b)

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“…We have constructed and operated Mach-Zehnder LLL-type X-ray interferometers made from a single crystal block of silicon by spark erosion and etching. The geometrical dimensions are given in paper [13]. Figure 1 presents the relevant geometry of our set-up including 392 G. Rode and H. Jex Fig.…”

Section: Methodsmentioning

confidence: 99%

“…However, when doing the experiment, we realised that the Fourier transformed beat pattern yields a Fourier amplitude at 96 mHz that means an offset of 4 mHz. In our previous paper [13] we spent the same total measuring time for only one MCS-scan of 259 201 channels with a dwell time of 1.0107 s in order to achieve a very high energy sensitivity of dE = 15.6 zepto-eV (1.56 Â 10 ±20 eV) in the Fourier coordinate. 3.…”

Section: Methodsmentioning

confidence: 99%

Quantum Beats in Time Resolved X-Ray Interference Experiments

Rode

Jex

2000

phys. stat. sol. (b)

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We have employed LLL‐type X‐ray interferometers with a splitted mirror crystal and quartz crystals attached aside each mirror. Ultrasound waves of different frequencies f1 and f2 around 10 MHz are fed into these mirrors. The ultrasound modulations of the coherently splitted X‐ray beams inside the interferometer are analysed in time resolved interference experiments correlating the phase of the phonons with the registration time of the photons. In the interference intensity we observe quantum beat frequencies down to Δf = 96 mHz (in energy scale ΔE = h Δf = 397 atto‐eV) as well as the two ultrasound frequencies and their overtones mf1 and nf2 (m, n = 1, 2, 3) and the sum frequency Σf = f1 + f2.

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A continuously scanning separate-crystal single-photon x-ray interferometer

Andreas

Kuetgens

2020

Meas. Sci. Technol.

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The feasibility of a new design and measurement concept of a combined optical and x-ray interferometer (COXI) is demonstrated here. Mechanical noise in the x-ray interferometer can be cancelled efficiently with fast and synchronous detection of the optical interferometer phase and x-ray counts. The scan-length requirement of the decadic step method of conventional COXI setups is reduced by more than one order of magnitude due to the correlation between single-photon interference events. The actual scan length of the shown setup is limited to 4 µm. It is estimated that a future update will enable us to measure the lattice parameter of 28Si, at least with the targeted relative statistical reproducibility of 3 × 10−9.

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Quantum beats observed in time resolved X-ray interference experiments

Cited by 5 publications

References 13 publications

Quantum Beats in Time Resolved X-Ray Interference Experiments

Quantum Beats in Time Resolved X-Ray Interference Experiments

Quantum Beats in Time Resolved X-Ray Interference Experiments

A continuously scanning separate-crystal single-photon x-ray interferometer

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