Zobrazeno 1 - 10
of 743
pro vyhledávání: '"Agarwal, G. S."'
Autor:
Roy, Dibyendu, Agarwal, G. S.
We show nonreciprocal light propagation for single-photon inputs due to quantum noise in coupled optical systems with gain and loss. We consider two parity-time ($\mathcal{PT}$) symmetric linear optical systems consisting of either two directly coupl
Externí odkaz:
http://arxiv.org/abs/2407.00758
Autor:
Miao, Qingtian, Agarwal, G. S.
Nonlinearity induced nonreciprocity is studied in a system comprising two resonators coupled to a one-dimensional waveguide when the linear system does not exhibit nonreciprocity. The analysis is based on the Hamiltonian of the coupled system and inc
Externí odkaz:
http://arxiv.org/abs/2404.17510
Autor:
Agarwal, G. S.
Publikováno v:
Phys. Rev. Res. 6, L012050 (2024)
We examine the possible control of the celebrated Purcell effect in cavity quantum electrodynamics. We demonstrate that the presence of an unexcited atom can significantly alter the Purcell decay depending on the strength of coupling of the unexcited
Externí odkaz:
http://arxiv.org/abs/2311.10884
Cavity-electromechanical systems are extensively used for sensing and controlling the vibrations of mechanical resonators down to their quantum limit. The nonlinear radiation-pressure interaction in these systems could result in an unstable response
Externí odkaz:
http://arxiv.org/abs/2309.06765
Publikováno v:
Phys. Rev. A 108, 042201 (2023)
We study the heat transfer between N coupled quantum resonators with applied synthetic electric and magnetic fields realized by changing the resonators parameters by external drivings. To this end we develop two general methods, based on the quantum
Externí odkaz:
http://arxiv.org/abs/2305.18066
Autor:
Biehs, S. -A., Agarwal, G. S.
The nonreciprocal propagation of light typically requires use of materials like ferrites or magneto-optical media with a strong magnetic bias or methods based on material nonlinearities which require use of strong electromagnetic fields. A simpler po
Externí odkaz:
http://arxiv.org/abs/2305.14945
Autor:
Miao, Qingtian, Agarwal, G. S.
The ultrastrong coupling between the elementary excitations of matter and microcavity modes is studied in a fully analytical quantum-mechanical theoretical framework. The elementary excitation could be phonons, excitons, plasmons, etc. From the diago
Externí odkaz:
http://arxiv.org/abs/2304.00680
Autor:
Agarwal, G. S.
We discuss the possibility of converting a simple pole in the radiative decay of a state into a pole of higher order by using resonant electromagnetic fields. This process of creation of higher order pole is controllable by the intensity of the laser
Externí odkaz:
http://arxiv.org/abs/2301.05179
Autor:
Biehs, S. -A., Agarwal, G. S.
In recent times the possibility of non-reciprocity in heat transfer between two bodies has been extensively studied. In particular the role of strong magnetic fields has been investigated. A much simpler approach with considerable flexibility would b
Externí odkaz:
http://arxiv.org/abs/2210.13049
Cavity-mediated magnon-magnon coupling can lead to a transfer of spin-wave excitations between two spatially separated magnetic samples. We enunciate how the application of a two-photon parametric drive to the cavity can lead to stark amplification i
Externí odkaz:
http://arxiv.org/abs/2210.05898