Zobrazeno 1 - 10
of 211
pro vyhledávání: '"G S, Agarwal"'
Autor:
G. S. Agarwal
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 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:
https://doaj.org/article/401b86a907b34deb90a720e3f3325d57
Autor:
Qingtian Miao, G. S. Agarwal
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033020 (2024)
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:
https://doaj.org/article/ecb84f7e3c6b42e1801cd64aa60aecca
Autor:
Qingtian Miao, G. S. Agarwal
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033136 (2023)
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:
https://doaj.org/article/8cbe8441dfdf424a94c7ad0d3303c5ff
Autor:
G. S. Agarwal, L. Davidovich
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p L012014 (2022)
We present a unified framework, based on quantum metrology concepts, for defining and quantifying deterministic noiseless quantum amplification of parameter-dependent processes, which plays an important role in increasing the precision of quantum sen
Externí odkaz:
https://doaj.org/article/7eabf22c7a0d420b972fed674b47c18a
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p 013127 (2023)
Understanding the mechanism through which an open quantum system exchanges information with an environment is central to the creation and stabilization of quantum states. This theme has been explored recently, with attention mostly focused on system
Externí odkaz:
https://doaj.org/article/8dda4ffc558644a0963c46a43d2c75d0
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013131 (2022)
The efficient sensing of weak environmental perturbations via special degeneracies called exceptional points in non-Hermitian systems has attracted enormous attention in the last few decades. However, in contrast to the extensive literature on parity
Externí odkaz:
https://doaj.org/article/986371376f7748c0a1c7362e303edbc7
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013014 (2022)
We present a paradigm in the field of cavity QED by bringing out remarkable features associated with the avoided crossing of the dressed-state levels of the Jaynes-Cummings model. We demonstrate how the parametric couplings, realized by a second orde
Externí odkaz:
https://doaj.org/article/5d6e919adfdb436caf63b19bbb082a72
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033389 (2020)
We determine quantum precision limits for estimation of damping constants and temperature of lossy bosonic channels. A direct application would be the use of light for estimation of the absorption and the temperature of a transparent slab. Analytic l
Externí odkaz:
https://doaj.org/article/5b03c2a562d0466c8bc091fddded26fc
Autor:
X.-F. Qian, G. S. Agarwal
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 012031 (2020)
Usual quantitative studies of quantum wave-particle duality employ Young's double-slit context and treat the slits approximately as ideal point sources, i.e., neglecting practical nonperfections such as slit finite width, roughness, etc. Here, we inv
Externí odkaz:
https://doaj.org/article/5defe7e184b74e328421afb451cfeb4c
Publikováno v:
Physical Review A. 106
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::935a3f62c1f9bcd6f6f5ebacd271272e
https://doi.org/10.1103/physreva.106.063713
https://doi.org/10.1103/physreva.106.063713