Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Arthur Matveev is active.

Publication


Featured researches published by Arthur Matveev.


Physical Review Letters | 2011

Improved Measurement of the Hydrogen 1S - 2S Transition Frequency

Christian G. Parthey; Arthur Matveev; Janis Alnis; Birgitta Bernhardt; Axel Beyer; Ronald Holzwarth; Aliaksei Maistrou; Randolf Pohl; Katharina Predehl; Thomas Udem; Tobias Wilken; Nikolai Kolachevsky; Michel Abgrall; Daniele Rovera; Christophe Salomon; Philippe Laurent; T. W. Hänsch

We have measured the 1S-2S transition frequency in atomic hydrogen via two-photon spectroscopy on a 5.8 K atomic beam. We obtain f(1S-2S) = 2,466,061,413,187,035 (10)  Hz for the hyperfine centroid, in agreement with, but 3.3 times better than the previous result [M. Fischer et al., Phys. Rev. Lett. 92, 230802 (2004)]. The improvement to a fractional frequency uncertainty of 4.2 × 10(-15) arises mainly from an improved stability of the spectroscopy laser, and a better determination of the main systematic uncertainties, namely, the second order Doppler and ac and dc Stark shifts. The probe laser frequency was phase coherently linked to the mobile cesium fountain clock FOM via a frequency comb.


Science | 2017

The Rydberg constant and proton size from atomic hydrogen

Axel Beyer; Lothar Maisenbacher; Arthur Matveev; Randolf Pohl; Ksenia Khabarova; Alexey Grinin; Tobias Lamour; Dylan C. Yost; T. W. Hänsch; Nikolai N. Kolachevsky; Thomas Udem

How big is the proton? The discrepancy between the size of the proton extracted from the spectroscopy of muonic hydrogen and the value obtained by averaging previous results for “regular” hydrogen has puzzled physicists for the past 7 years. Now, Beyer et al. shed light on this puzzle (see the Perspective by Vassen). The authors obtained the size of the proton using very accurate spectroscopic measurements of regular hydrogen. Unexpectedly, this value was inconsistent with the average value of previous measurements of the same type. Also unexpectedly, it was consistent with the size extracted from the muonic hydrogen experiments. Resolving the puzzle must now include trying to understand how the old results relate to the new, as well as reexamining the sources of systematic errors in all experiments. Science, this issue p. 79; see also p. 39 The proton radius from hydrogen spectroscopy is consistent with the value from muonic hydrogen spectroscopy. At the core of the “proton radius puzzle” is a four–standard deviation discrepancy between the proton root-mean-square charge radii (rp) determined from the regular hydrogen (H) and the muonic hydrogen (µp) atoms. Using a cryogenic beam of H atoms, we measured the 2S-4P transition frequency in H, yielding the values of the Rydberg constant R∞ = 10973731.568076(96) per meterand rp = 0.8335(95) femtometer. Our rp value is 3.3 combined standard deviations smaller than the previous H world data, but in good agreement with the µp value. We motivate an asymmetric fit function, which eliminates line shifts from quantum interference of neighboring atomic resonances.


21st International Conference on Laser Spectroscopy - ICOLS 2013 | 2013

Precision Spectroscopy of Atomic Hydrogen

Axel Beyer; Christian G. Parthey; Nikolai N. Kolachevsky; Janis Alnis; Ksenia Khabarova; Randolf Pohl; Elisabeth Peters; Dylan C. Yost; Arthur Matveev; Katharina Predehl; Stefan Droste; Tobias Wilken; Ronald Holzwarth; T. W. Hänsch; M. Abgrall; Daniele Rovera; C. Salomon; Philippe Laurent; Thomas Udem

Precise determinations of transition frequencies of simple atomic systems are required for a number of fundamental applications such as tests of quantum electrodynamics (QED), the determination of fundamental constants and nuclear charge radii. The sharpest transition in atomic hydrogen occurs between the metastable 2S state and the 1S ground state. Its transition frequency has now been measured with almost 15 digits accuracy using an optical frequency comb and a cesium atomic clock as a reference [1]. A recent measurement of the 2S ? 2P3/2 transition frequency in muonic hydrogen is in significant contradiction to the hydrogen data if QED calculations are assumed to be correct [2, 3]. We hope to contribute to this so-called proton size puzzle by providing additional experimental input from hydrogen spectroscopy.


Physical Review Letters | 2009

Measurement of the 2S hyperfine interval in atomic hydrogen.

Nikolai Kolachevsky; Arthur Matveev; Janis Alnis; Christian G. Parthey; Savely G. Karshenboim; T. W. Hänsch

An optical measurement of the 2S hyperfine interval in atomic hydrogen using two-photon spectroscopy of the 1S-2S transition gives a value of 177 556 834.3(6.7) Hz. The uncertainty is 2.4 times smaller than achieved by our group in 2003 and more than 4 times smaller than for any independent radio-frequency measurement. The specific combination of the 2S and 1S hyperfine intervals predicted by QED theory 8fHFS(2S)-fHFS(1S)=48 953(3) Hz is in good agreement with the value of 48 923(54) Hz obtained from this experiment.


Metrologia | 2017

Deuteron charge radius and Rydberg constant from spectroscopy data in atomic deuterium

Randolf Pohl; F. Nez; Thomas Udem; Aldo Antognini; Axel Beyer; Hélène Fleurbaey; Alexey Grinin; T. W. Hänsch; L. Julien; F. Kottmann; Julian J. Krauth; Lothar Maisenbacher; Arthur Matveev; F. Biraben

We give a pedagogical description of the method to extract the charge radii and Rydberg constant from laser spectroscopy in regular hydrogen (H) and deuterium (D) atoms, that is part of the CODATA least-squares adjustment (LSA) of the fundamental physical constants. We give a deuteron charge radius Rd from D spectroscopy alone of 2.1415(45) fm. This value is independent of the measurements that lead to the proton charge radius, and five times more accurate than the value found in the CODATA Adjustment 10. The improvement is due to the use of a value for the 1S->2S transition in atomic deuterium which can be inferred from published data or found in a PhD thesis.


New Journal of Physics | 2015

Characterization of a 450 km baseline GPS carrier-phase link using an optical fiber link

Stefan Droste; Christian Grebing; Julia Leute; Sebastian Raupach; Arthur Matveev; T. W. Hänsch; Andreas Bauch; Ronald Holzwarth; Gesine Grosche

Frequency transfer via a GPS carrier-phase link is characterized by comparing two hydrogen masers over the distance of 450 km via GPS and via a 920 km fiber link simultaneously. The contributions from the masers cancel in the difference between GPS and fiber link.


Optics Letters | 2011

Low phase noise diode laser oscillator for 1S–2S spectroscopy in atomic hydrogen

Nikolai Kolachevsky; Janis Alnis; Christian G. Parthey; Arthur Matveev; R. Landig; T. W. Hänsch

We report on a low-noise diode laser oscillator at 972 nm actively stabilized to an ultra-stable vibrationallyand thermally compensated reference cavity. To increase the fraction of laser power in the carrier we designed a 20 cm long external cavity diode laser with an intra-cavity electro-optical modulator. The fractional power in the carrier reaches 99.9% which corresponds to a rms phase noise of φ2rms = 1mrad 2 in 10MHz bandwidth. Using this oscillator we recorded 1S – 2S spectra in atomic hydrogen and have not observed any significant loss of the excitation efficiency due to phase noise multiplication in the three consecutive 2-photon processes. c


Physical Review A | 2017

Long-range interactions of hydrogen atoms in excited states. I. 2S-1S interactions and Dirac-δ perturbations

C. M. Adhikari; Vincent Debierre; Arthur Matveev; Nikolai N. Kolachevsky; Ulrich D. Jentschura

The theory of the long-range interaction of metastable excited atomic states with ground-state atoms is analyzed. We show that the long-range interaction is essentially modified when quasi-degenerate states are available for virtual transitions. A discrepancy in the literature regarding the van der Waals coefficient C_6(2S;1S) describing the interaction of metastable atomic hydrogen (2S state) with a ground-state hydrogen atom is resolved. In the the van der Waals range a_0 > hbar c/L, we find an oscillatory tail with a negligible interaction energy below 10^(-36) Hz. Dirac-delta perturbations to the interaction are also evaluated and results are given for all asymptotic distance ranges; these effects describe the hyperfine modification of the interaction, or, expressed differently, the shift of the hydrogen 2S hyperfine frequency due to interactions with neighboring 1S atoms. The 2S hyperfine frequency has recently been measured very accurately in atomic beam experiments.


Optics Express | 2016

Active fiber-based retroreflector providing phase-retracing anti-parallel laser beams for precision spectroscopy.

Axel Beyer; Lothar Maisenbacher; Arthur Matveev; Randolf Pohl; Ksenia Khabarova; Yue Chang; Alexey Grinin; Tobias Lamour; Tao Shi; Dylan C. Yost; Thomas Udem; T. W. Hänsch; Nikolai N. Kolachevsky

We present an active fiber-based retroreflector providing high quality phase-retracing anti-parallel Gaussian laser beams for precision spectroscopy of Doppler sensitive transitions. Our design is well-suited for a number of applications where implementing optical cavities is technically challenging and corner cubes fail to match the demanded requirements, most importantly retracing wavefronts and preservation of the laser polarization. To illustrate the performance of the system, we use it for spectroscopy of the 2S-4P transition in atomic hydrogen and demonstrate an average suppression of the first order Doppler shift to 4 parts in 106 of the full collinear shift. This high degree of cancellation combined with our cryogenic source of hydrogen atoms in the metastable 2S state is sufficient to enable determinations of the Rydberg constant and the proton charge radius with competitive uncertainties. Advantages over the usual Doppler cancellation based on corner cube type retroreflectors are discussed as well as an alternative method using a high finesse cavity.


Physical Review A | 2017

Long-range interactions of hydrogen atoms in excited states. II. Hyperfine-resolved 2S-2S systems

Ulrich D. Jentschura; Vincent Debierre; C. M. Adhikari; Arthur Matveev; Nikolai N. Kolachevsky

The interaction of two excited hydrogen atoms in metastable states constitutes a theoretically interesting problem because of the quasi-degenerate 2P_{1/2} levels which are removed from the 2S states only by the Lamb shift. The total Hamiltonian of the system is composed of the van der Waals Hamiltonian, the Lamb shift and the hyperfine effects. The van der Waals shift becomes commensurate with the 2S-2P_{3/2} fine-structure splitting only for close approach (R < 100 a_0, where a_0 is the Bohr radius) and one may thus restrict the discussion to the levels with n=2 and J=1/2 to good approximation. Because each S or P state splits into an F=1 triplet and an F=0 hyperfine singlet (eight states for each atom), the Hamiltonian matrix {\em a priori} is of dimension 64. A careful analysis of symmetries the problem allows one to reduce the dimensionality of the most involved irreducible submatrix to 12. We determine the Hamiltonian matrices and the leading-order van der Waals shifts for states which are degenerate under the action of the unperturbed Hamiltonian (Lamb shift plus hyperfine structure). The leading first- and second-order van der Waals shifts lead to interaction energies proportional to 1/R^3 and 1/R^6 and are evaluated within the hyperfine manifolds. When both atoms are metastable 2S states, we find an interaction energy of order E_h chi (a_0/R)^6, where E_h and L are the Hartree and Lamb shift energies, respectively, and chi = E_h/L ~ 6.22 \times 10^6 is their ratio.

Collaboration


Dive into the Arthur Matveev's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge