International year of quantum science and technology. Reviews of topical problems

S.A. Moiseev, M.M. Minnegaliev, K.I. Gerasimov, E.S. Moiseev, A.D. Deev, Yu.Yu. Balega “Optical quantum memory in atomic ensembles: physical principles, experiments, and potential of application in a quantum repeater” Phys. Usp. 68 (5) (2025)

Reviews of topical problems

G.N. Makarov “Laser separation of boron isotopes: research results and options for technological implementation” Phys. Usp. 68 (5) (2025)

Physics of our days

V.V. Brazhkin “Spectra of collective excitations of particles in normal and superfluid liquids” Phys. Usp. 68 (5) (2025)

Instruments and methods of investigation

M.V. Dorokhin, M.V. Ved’, P.B. Demina, Yu.M. Kuznetsov, A.V. Kudrin, A.V. Zdoroveyshchev, D.A. Zdoroveyshchev, N.V. Baidus, I.L. Kalentyeva “Magnetically controlled spin light-emitting diode” Phys. Usp. 68 (5) (2025)

Methodological notes

P.P. Vasil’ev “Superradiant quantum phase transition in a semiconductor at room temperature: myth or reality?” Phys. Usp. 68 (5) (2025)

Personalia

N.A. Vinokurov, M.V. Danilov, A.S. Kuz’min, E.B. Levichev, P.V. Logachev, A.I. Mil’shtein, V.V. Parkhomchuk, P.N. Pakhlov, A.N. Skrinskii, Yu.A. Tikhonov, M.P. Fedoruk, B.A. Shvarts “Aleksandr Evgen'evich Bondar' (on his 70th birthday)” Phys. Usp. 68 (5) (2025)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet: May 2025” Phys. Usp. 68 (5) (2025)