Trade-offs between unitary and measurement induced spin squeezing in cavity QED
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2023
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866917745261543424 |
|---|---|
| author | Barberena, Diego Chu, Anjun Thompson, James K. Rey, Ana Maria |
| author_facet | Barberena, Diego Chu, Anjun Thompson, James K. Rey, Ana Maria |
| contents | We study the combined effects of measurements and unitary evolution on the preparation of spin squeezing in an ensemble of atoms interacting with a single electromagnetic field mode inside a cavity. We derive simple criteria that determine the conditions at which measurement based entanglement generation overperforms unitary protocols. We include all relevant sources of decoherence and study both their effect on the optimal spin squeezing and the overall size of the measurement noise, which limits the dynamical range of quantum-enhanced phase measurements. Our conclusions are relevant for state-of-the-art atomic clocks that aim to operate below the standard quantum limit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_15353 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Trade-offs between unitary and measurement induced spin squeezing in cavity QED Barberena, Diego Chu, Anjun Thompson, James K. Rey, Ana Maria Quantum Physics We study the combined effects of measurements and unitary evolution on the preparation of spin squeezing in an ensemble of atoms interacting with a single electromagnetic field mode inside a cavity. We derive simple criteria that determine the conditions at which measurement based entanglement generation overperforms unitary protocols. We include all relevant sources of decoherence and study both their effect on the optimal spin squeezing and the overall size of the measurement noise, which limits the dynamical range of quantum-enhanced phase measurements. Our conclusions are relevant for state-of-the-art atomic clocks that aim to operate below the standard quantum limit. |
| title | Trade-offs between unitary and measurement induced spin squeezing in cavity QED |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2309.15353 |