Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Poddubny, Alexander N"'
We numerically verify and analytically prove a winding number invariant that correctly predicts the number of edge states in one-dimensional, nearest-neighbour (between unit cells), two-band models with any complex couplings and open boundaries. Our
Externí odkaz:
http://arxiv.org/abs/2412.10526
We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. This motion can be implemented mechanically or simulated via the modulation of the couplings between the qubits and the waveguide. When the frequency
Externí odkaz:
http://arxiv.org/abs/2408.17365
Autor:
Mualem, Yuval, Poddubny, Alexander N.
We present a theoretical study of van der Waals interaction forces in disordered linear molecule chains. We demonstrate that the interaction energy strongly and nonmonotonously depends on the disorder correlation length. Semianalytical expressions fo
Externí odkaz:
http://arxiv.org/abs/2409.08288
Autor:
Poddubny, Alexander N., Winkler, Klemens, Stickler, Benjamin A., Delić, Uroš, Aspelmeyer, Markus, Zasedatelev, Anton V.
We present a protocol that maximizes unconditional entanglement generation between two masses interacting directly through $1/r^{n}$ potential. The protocol combines optimal quantum control of continuously measured masses with their non-equilibrium d
Externí odkaz:
http://arxiv.org/abs/2408.06251
Autor:
Shi, Jiaming, Poddubny, Alexander N.
We study theoretically the interplay of spontaneous emission and interactions for the multiple-excited quasistationary eigenstates in a finite periodic array of multilevel atoms coupled to the waveguide. We develop an analytical approach to calculate
Externí odkaz:
http://arxiv.org/abs/2406.12390
Quantum correlations between distant particles remain enigmatic since the birth of quantum mechanics. Here we predict a novel kind of bound quantum state in the simplest one-dimensional setup of two interacting particles in a box. Paradoxically, two
Externí odkaz:
http://arxiv.org/abs/2303.09854
We have theoretically studied the scattering of two-photon pulses from a spatially-separated array of two-level atoms coupled to the waveguide. A general analytical expression for the scattered pulse has been obtained. The contributions of various si
Externí odkaz:
http://arxiv.org/abs/2302.14167
Publikováno v:
Phys. Rev. A 108, 023715 (2023)
We have developed a theory of parametric photon generation in the waveguides coupled to arrays of quantum emitters with temporally modulated resonance frequencies. Such generation can be interpreted as a dynamical Casimir effect. We demonstrate numer
Externí odkaz:
http://arxiv.org/abs/2302.12792
Autor:
Poddubny, Alexander N.
We study theoretically quantum states of two repelling spinless particles in a one-dimensional tight-binding model with simple periodic lattice and open boundary conditions. We demonstrate, that when the particles are not identical, their interaction
Externí odkaz:
http://arxiv.org/abs/2211.06043
Autor:
Redchenko, Elena S., Poshakinskiy, Alexander V., Sett, Riya, Zemlicka, Martin, Poddubny, Alexander N., Fink, Johannes M.
Publikováno v:
Nat Commun 14, 2998 (2023)
The ability to control the direction of scattered light in integrated devices is crucial to provide the flexibility and scalability for a wide range of on-chip applications, such as integrated photonics, quantum information processing and nonlinear o
Externí odkaz:
http://arxiv.org/abs/2205.03293