Driven quadrature and spin squeezing in a cavity-coupled ensemble of two-level states
El-Ella, Haitham A.R. LU
(2021)
In Physical Review A
103(2).
- Abstract
The generated magnitude of quadrature squeezing in a cavity-coupled ensemble, which is continuously driven using a coherent off-axis field, is theoretically explored. Using a truncated set of equations of motion derived from a Dicke Hamiltonian, steady-state quadrature squeezing of the cavity field is numerically calculated to approach a limit of -3dB, while frequency-modulated quadrature squeezing approaches a limit of -14dB, in the absence of pure dephasing and as a function of the ensemble's size and detuning. The impact of pure dephasing on steady-state quadrature squeezing is shown to be mitigated by increased detuning of the driving field, while frequency-modulated squeezing is only shielded in a regime where the cumulative... (More)
The generated magnitude of quadrature squeezing in a cavity-coupled ensemble, which is continuously driven using a coherent off-axis field, is theoretically explored. Using a truncated set of equations of motion derived from a Dicke Hamiltonian, steady-state quadrature squeezing of the cavity field is numerically calculated to approach a limit of -3dB, while frequency-modulated quadrature squeezing approaches a limit of -14dB, in the absence of pure dephasing and as a function of the ensemble's size and detuning. The impact of pure dephasing on steady-state quadrature squeezing is shown to be mitigated by increased detuning of the driving field, while frequency-modulated squeezing is only shielded in a regime where the cumulative coupling and driving rates are in excess of the pure-dephasing rate. Spin-squeezed entanglement is also calculated to occur simultaneously with weakly driven frequency-modulated quadrature squeezing.
(Less)
- author
- El-Ella, Haitham A.R.
LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review A
- volume
- 103
- issue
- 2
- article number
- 023701
- publisher
- American Physical Society
- external identifiers
-
- scopus:85100963432
- ISSN
- 2469-9926
- DOI
- 10.1103/PhysRevA.103.023701
- language
- English
- LU publication?
- yes
- id
- af635d07-37e7-4832-ad07-0c60811671c2
- date added to LUP
- 2021-03-02 08:00:21
- date last changed
- 2025-04-04 14:06:59
@article{af635d07-37e7-4832-ad07-0c60811671c2,
abstract = {{<p>The generated magnitude of quadrature squeezing in a cavity-coupled ensemble, which is continuously driven using a coherent off-axis field, is theoretically explored. Using a truncated set of equations of motion derived from a Dicke Hamiltonian, steady-state quadrature squeezing of the cavity field is numerically calculated to approach a limit of -3dB, while frequency-modulated quadrature squeezing approaches a limit of -14dB, in the absence of pure dephasing and as a function of the ensemble's size and detuning. The impact of pure dephasing on steady-state quadrature squeezing is shown to be mitigated by increased detuning of the driving field, while frequency-modulated squeezing is only shielded in a regime where the cumulative coupling and driving rates are in excess of the pure-dephasing rate. Spin-squeezed entanglement is also calculated to occur simultaneously with weakly driven frequency-modulated quadrature squeezing.</p>}},
author = {{El-Ella, Haitham A.R.}},
issn = {{2469-9926}},
language = {{eng}},
number = {{2}},
publisher = {{American Physical Society}},
series = {{Physical Review A}},
title = {{Driven quadrature and spin squeezing in a cavity-coupled ensemble of two-level states}},
url = {{http://dx.doi.org/10.1103/PhysRevA.103.023701}},
doi = {{10.1103/PhysRevA.103.023701}},
volume = {{103}},
year = {{2021}},
}