Zobrazeno 1 - 10
of 252
pro vyhledávání: '"Zagoskin, A M"'
By consistently applying the formalism of quantum electrodynamics we developed a comprehensive theoretical framework describing the interaction of single microwave photons with an array of superconducting transmon qubits in a wave guide cavity resona
Externí odkaz:
http://arxiv.org/abs/2205.14490
Publikováno v:
Phys. Rev. B 103, 064503 (2021)
Using an analytically solvable model, we show that a qubit array-based detector allows to achieve the fundamental Heisenberg limit in detecting single photons. In case of superconducting qubits, this opens new opportunities for quantum sensing and co
Externí odkaz:
http://arxiv.org/abs/2009.11271
Emergence and Control of Complex Behaviours in Driven Systems of Interacting Qubits with Dissipation
Autor:
Andreev, A. V., Balanov, A. G., Fromhold, T. M., Greenaway, M. T., Hramov, A. E., Li, W., Makarov, V. V., Zagoskin, A. M.
Progress in the creation of large scale, artificial quantum coherent structures demands the investigation of their nonequilibrium dynamics when strong interactions, even between remote parts, are non-perturbative. Analysis of multiparticle quantum co
Externí odkaz:
http://arxiv.org/abs/1907.03602
Autor:
Sowa, A. P., Zagoskin, A. M.
The key difficulty in the modelling of large quantum coherent structures lies in keeping track of nonlocal, multipoint quantum correlations between their constituent parts. Here we consider a special case of such a system, a fractal quantum metamater
Externí odkaz:
http://arxiv.org/abs/1902.05324
Autor:
Qureshi, Mumnuna A., Zhong, Johnny, Mason, Peter, Betouras, Joseph J., Zagoskin, Alexandre M.
Publikováno v:
Phys. Rev. A 98, 012128 (2018)
Quantum systems are prone to decoherence due to both intrinsic interactions as well as random fluctuations from the environment. Using the Pechukas-Yukawa formalism, we investigate the influence of noise on the dynamics of an adiabatically evolving H
Externí odkaz:
http://arxiv.org/abs/1803.05034
Autor:
Qureshi, Mumnuna A, Zhong, Johnny, Qureshi, Zihad, Mason, Peter, Betouras, Joseph J, Zagoskin, Alexandre M
Publikováno v:
Phys. Rev. A 97, 032117 (2018)
We consider the evolution of a quantum state of a Hamiltonian which is parametrically perturbed via a term proportional to the adiabatic parameter \lambda (t). Starting with the Pechukas-Yukawa mapping of the energy eigenvalues evolution on a general
Externí odkaz:
http://arxiv.org/abs/1706.05243
Publikováno v:
Phys. Rev. A 95, 032126 (2017)
Theoretical description and simulation of large quantum coherent systems out of equilibrium remains a daunting task. Here we are developing a new approach to it based on the Pechukas-Yukawa formalism, which is especially convenient in case of an adia
Externí odkaz:
http://arxiv.org/abs/1610.02380
Autor:
Duffus, S. N. A., Bjergstrøm, K. N., Dwyer, V. M., Samson, J. H., Spiller, T. P., Zagoskin, A. M., Munro, W. J., Nemoto, Kae, Everitt, M. J.
Publikováno v:
Phys. Rev. B 94, 064518 (2016)
In this paper we consider the modelling and simulation of open quantum systems from a device engineering perspective. We derive master equations at different levels of approximation for a Superconducting Quantum Interference Device (SQUID) ring coupl
Externí odkaz:
http://arxiv.org/abs/1605.06268
Strong interaction of a system of quantum emitters (e.g., two-level atoms) with electromagnetic field induces specific correlations in the system accompanied by a drastic insrease of emitted radiation (superradiation or superfluorescence). Despite th
Externí odkaz:
http://arxiv.org/abs/1605.04929
Quantum metamaterials generalize the concept of metamaterials (artificial optical media) to the case when their optical properties are determined by the interplay of quantum effects in the constituent 'artificial atoms' with the electromagnetic field
Externí odkaz:
http://arxiv.org/abs/1601.06587