TY - JOUR

T1 - Generation of vortex particles via generalized measurements

AU - Karlovets, D. V.

AU - Baturin, S. S.

AU - Geloni, G.

AU - Sizykh, G. K.

AU - Serbo, V. G.

N1 - Funding Information: We are grateful to A. Di Piazza, A. Tishchenko, A. Surzhykov, A. Pupasov-Maksimov, and A. Volotka for fruitful discussions and criticism. The studies on the measurement schemes to generate twisted photons are supported by the Russian Science Foundation (Project No. 21-42-04412) and by the Deutsche Forschungsgemeinschaft (Project No. SU 658/5-1). The studies on the Compton scattering and undulator radiation are supported by the Ministry of Science and Higher Education of the Russian Federation (agreement no. 075-15-2021-1349). The studies on heavy particles are supported by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program. The work on the evolved states of particles (by D. Karlovets and G. Sizykh) was supported by the Foundation for the Advancement of Theoretical Physics and Mathematics “BASIS”. Publisher Copyright: © 2022, The Author(s).

PY - 2022/11

Y1 - 2022/11

N2 - The hard X-ray twisted photons and relativistic massive particles with orbital angular momentum – vortex electrons, muons, protons, etc. – have many potential applications in high-energy and nuclear physics. However, such states can be obtained so far mainly via diffraction techniques, not applicable for relativistic energies. Here we show that the vortex states of different particles, including hadrons, ions, and nuclei, can be generated in a large class of processes with two final particles simply by altering a postselection protocol. Thanks to entanglement and to the uncertainty relations, an evolved state of a final particle becomes twisted if the momentum azimuthal angle of the other particle is measured with a large uncertainty. We give several examples, including Cherenkov and undulator radiation, particle collisions with intense laser beams, eμ→ eμ, ep→ ep. This technique can be adapted for ultrarelativistic lepton and hadron beams of linear colliders, and it can also facilitate the development of sources of X-ray and γ-range twisted photons at storage rings and free-electron lasers.

AB - The hard X-ray twisted photons and relativistic massive particles with orbital angular momentum – vortex electrons, muons, protons, etc. – have many potential applications in high-energy and nuclear physics. However, such states can be obtained so far mainly via diffraction techniques, not applicable for relativistic energies. Here we show that the vortex states of different particles, including hadrons, ions, and nuclei, can be generated in a large class of processes with two final particles simply by altering a postselection protocol. Thanks to entanglement and to the uncertainty relations, an evolved state of a final particle becomes twisted if the momentum azimuthal angle of the other particle is measured with a large uncertainty. We give several examples, including Cherenkov and undulator radiation, particle collisions with intense laser beams, eμ→ eμ, ep→ ep. This technique can be adapted for ultrarelativistic lepton and hadron beams of linear colliders, and it can also facilitate the development of sources of X-ray and γ-range twisted photons at storage rings and free-electron lasers.

UR - http://www.scopus.com/inward/record.url?scp=85141604890&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/93ff90dc-54e7-3db0-b324-a07ca630acdb/

U2 - 10.1140/epjc/s10052-022-10991-w

DO - 10.1140/epjc/s10052-022-10991-w

M3 - Article

AN - SCOPUS:85141604890

VL - 82

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 11

M1 - 1008

ER -