Zobrazeno 1 - 10
of 1 233
pro vyhledávání: '"SHAPIRO, P. S."'
We investigate quantum phase transitions in a topological Josephson junction with an embedded ferromagnetic layer, revealing a rich landscape of critical phenomena. The low-energy excitations comprise Majorana fermions propagating along the junction,
Externí odkaz:
http://arxiv.org/abs/2410.22514
Publikováno v:
Phys. Rev. B 107, 125404 (2023)
We study charge transport in a single-electron transistor implemented as an interferometer such that the Coulomb blockaded middle island contains a circular chiral Majorana or Dirac edge mode. We concentrate on the regime of small conductance and pro
Externí odkaz:
http://arxiv.org/abs/2301.05312
Publikováno v:
Phys. Rev. B 107, 174312 (2023)
The use of dissipation for the controlled creation of nontrivial quantum many-body correlated states is of much fundamental and practical interest. What is the result of imposing number conservation, which, in closed system, gives rise to diffusive s
Externí odkaz:
http://arxiv.org/abs/2301.05258
Autor:
Shapiro, D. S., Remizov, S. V., Lebedev, A. V., Babukhin, D. V., Akzyanov, R. S., Zhukov, A. A., Bork, L. V.
Publikováno v:
Phys. Rev. A 105, 023321 (2022)
A dimerized fermion chain, described by Su-Schrieffer-Heeger (SSH) model, is a well-known example of 1D system with a non-trivial band topology. An interplay of disorder and topological ordering in the SSH model is of a great interest owing to experi
Externí odkaz:
http://arxiv.org/abs/2111.15500
Autor:
Mazhorin, Grigoriy S., Moskalenko, Ilya N., Besedin, Ilya S., Shapiro, Dmitriy S., Remizov, Sergey V., Pogosov, Walter V., Moskalev, Dmitry O., Pishchimova, Anastasia A., Dobronosova, Alina A., Rodionov, I. A., Ustinov, Alexey V.
Publikováno v:
Phys. Rev. A 105, 033519 (2022)
We explore experimentally a quantum metamaterial based on a superconducting chip with 25 frequency-tunable transmon qubits coupled to a common coplanar resonator. The collective bright and dark modes are probed via the microwave response, i.e., by me
Externí odkaz:
http://arxiv.org/abs/2107.01420
Publikováno v:
Phys. Rev. B 104, 035434 (2021)
We consider an interferometer based on artificially induced topological superconductivity and chiral 1D Majorana fermions. The (non-topological) superconducting island inducing the superconducting correlations in the topological substrate is assumed
Externí odkaz:
http://arxiv.org/abs/2102.03220
Autor:
Fedorov, G. P., Remizov, S. V., Shapiro, D. S., Pogosov, W. V., Egorova, E., Tsitsilin, I., Andronik, M., Dobronosova, A. A., Rodionov, I. A., Astafiev, O. V., Ustinov, A. V.
Publikováno v:
Phys. Rev. Lett. 126, 180503 (2021)
We demonstrate non-equilibrium steady-state photon transport through a chain of five coupled artificial atoms simulating the driven-dissipative Bose-Hubbard model. Using transmission spectroscopy, we show that the system retains many-particle coheren
Externí odkaz:
http://arxiv.org/abs/2011.11454
Autor:
Shapiro, Dmitriy S.
Publikováno v:
Sci. Rep. 11, 8328 (2021)
Under nonequilibrium conditions, quantum optical systems reveal unusual properties that might be distinct from those in condensed matter. The fundamental reason is that photonic eigenstates can have arbitrary occupation numbers, whereas in electronic
Externí odkaz:
http://arxiv.org/abs/2009.09373
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Publikováno v:
Phys. Rev. Lett. 124, 196801 (2020)
The mesoscopic Stoner instability is an intriguing manifestation of symmetry breaking in isolated metallic quantum dots, underlined by the competition between single-particle energy and Heisenberg exchange interaction. Here we study this phenomenon i
Externí odkaz:
http://arxiv.org/abs/1910.11581