Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Kopteva, N."'
Autor:
Evers, E., Kopteva, N. E., Nedelea, V., Kors, A., Kaur, R., Reithmaier, J. P., Benyoucef, M., Bayer, M., Greilich, A.
We report measurements of the longitudinal and transverse spin relaxation times of holes in an ensemble of self-assembled InAs/InAlGaAs quantum dots (QDs), emitting in the telecom spectral range. The spin coherence of a single carrier is determined u
Externí odkaz:
http://arxiv.org/abs/2311.03047
Crystals spontaneously break the continuous translation symmetry in space, despite the invariance of the underlying energy function. This has triggered suggestions of time crystals analogously lifting translational invariance in time. Originally sugg
Externí odkaz:
http://arxiv.org/abs/2303.15989
Autor:
Harkort, C., Kudlacik, D., Kopteva, N. E., Yakovlev, D. R., Karzel, M., Kirstein, E., Hordiichuk, O., Kovalenko, M., Bayer, M.
The class of Ruddlesden-Popper type (PEA)$_2$PbI$_4$ perovskites comprises two-dimensional (2D) structures whose optical properties are determined by excitons with a large binding energy of about 260 meV. It complements the family of other 2D semicon
Externí odkaz:
http://arxiv.org/abs/2302.02349
Autor:
Kopteva, N. E., Yakovlev, D. R., Kirstein, E., Zhukov, E. A., Kudlacik, D., Kalitukha, I. V., Sapega, V. F., Dirin, D. N., Kovalenko, M. V., Baumann, A., Höcker, J., Dyakonov, V., Crooker, S. A., Bayer, M.
The photovoltaic and optoelectronic properties of lead halide perovskite semiconductors are controlled by excitons, so that investigation of their fundamental properties is of critical importance. The exciton Land\'e or g-factor g_X is the key parame
Externí odkaz:
http://arxiv.org/abs/2301.12775
Autor:
Kirstein, E., Smirnov, D. S., Zhukov, E. A., Yakovlev, D. R., Kopteva, N. E., Dirin, D. N., Hordiichuk, O., Kovalenko, M. V., Bayer, M.
Coherent many-body states are highly promising for robust and scalable quantum information processing. While far-reaching theoretical predictions have been made for various implementations, direct experimental evidence of their appealing properties c
Externí odkaz:
http://arxiv.org/abs/2301.11460
Autor:
Kirstein, E., Kopteva, N. E., Yakovlev, D. R., Zhukov, E. A., Kolobkova, E. V., Kuznetsova, M. S., Belykh, V. V., Yugova, I. A., Glazov, M. M., Bayer, M., Greilich, A.
The spin physics of perovskite nanocrystals with confined electrons or holes is attracting increasing attention, both for fundamental studies and spintronic applications. Here, stable CsPb(Cl$_{0.5}$Br$_{0.5}$)$_3$ lead halide perovskite nanocrystals
Externí odkaz:
http://arxiv.org/abs/2206.13323
Autor:
Kirstein, E., Yakovlev, D. R., Glazov, M. M., Zhukov, E. A., Kudlacik, D., Kalitukha, I. V., Sapega, V. F., Dimitriev, G. S., Semina, M. A., Nestoklon, M. O., Ivchenko, E. L., Kopteva, N. E., Dirin, D. N., Nazarenko, O., Kovalenko, M. V., Baumann, A., Höcker, J., Dyakonov, V., Bayer, M.
Publikováno v:
Nat Commun 13, 3062 (2022)
The Land\'e or $g$-factors of charge carriers are decisive for the spin-dependent phenomena in solids and provide also information about the underlying electronic band structure. We present a comprehensive set of experimental data for values and anis
Externí odkaz:
http://arxiv.org/abs/2112.15384
Autor:
Kopteva, N. E., Kudlacik, D., Yakovlev, D. R., Eremin, M. V., Nurmukhametov, A. R., Bayer, M., Pisarev, R. V.
The optical spectra of antiferromagnetic copper metaborate CuB$_2$O$_4$ are characterized by an exceptionally rich structure of narrow absorption lines due to electronic transitions within the magnetic Cu$^{2+}$ ions, but their unambiguous identifica
Externí odkaz:
http://arxiv.org/abs/2111.02271
Publikováno v:
Phys. Rev. B 104, 075302 (2021)
The dynamics of the coupled electron-nuclear spin system is studied in an ensemble of singly-charged (In,Ga)As/GaAs quantum dots (QDs) using periodic optical excitation at 1 GHz repetition rate. In combination with the electron-nuclei interaction, th
Externí odkaz:
http://arxiv.org/abs/2101.04469
Autor:
Evers, E., Kopteva, N. E., Yugova, I. A., Yakovlev, D. R., Reuter, D., Wieck, A. D., Bayer, M., Greilich, A.
Publikováno v:
npj Quantum Inf. 7, 60 (2021)
The coherent electron spin dynamics of an ensemble of singly charged (In,Ga)As/GaAs quantum dots in a transverse magnetic field is driven by periodic optical excitation at 1 GHz repetition frequency. Despite the strong inhomogeneity of the electron $
Externí odkaz:
http://arxiv.org/abs/2011.06869