Projective measurements can probe non-classical work extraction and time-correlations
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2022
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866929391311781888 |
|---|---|
| author | Hernández-Gómez, Santiago Gherardini, Stefano Belenchia, Alessio Lostaglio, Matteo Levy, Amikam Fabbri, Nicole |
| author_facet | Hernández-Gómez, Santiago Gherardini, Stefano Belenchia, Alessio Lostaglio, Matteo Levy, Amikam Fabbri, Nicole |
| contents | We demonstrate an experimental technique to characterize genuinely nonclassical multi-time correlations using projective measurements with no ancillae. We implement the scheme in a nitrogen-vacancy center in diamond undergoing a unitary quantum work protocol. We reconstruct quantum-mechanical time correlations encoded in the Margenau-Hills quasiprobabilities. We observe work extraction peaks five times those of sequential projective energy measurement schemes and in violation of newly-derived stochastic bounds. We interpret the phenomenon via anomalous energy exchanges due to the underlying negativity of the quasiprobability distribution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_12960 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Projective measurements can probe non-classical work extraction and time-correlations Hernández-Gómez, Santiago Gherardini, Stefano Belenchia, Alessio Lostaglio, Matteo Levy, Amikam Fabbri, Nicole Quantum Physics Statistical Mechanics We demonstrate an experimental technique to characterize genuinely nonclassical multi-time correlations using projective measurements with no ancillae. We implement the scheme in a nitrogen-vacancy center in diamond undergoing a unitary quantum work protocol. We reconstruct quantum-mechanical time correlations encoded in the Margenau-Hills quasiprobabilities. We observe work extraction peaks five times those of sequential projective energy measurement schemes and in violation of newly-derived stochastic bounds. We interpret the phenomenon via anomalous energy exchanges due to the underlying negativity of the quasiprobability distribution. |
| title | Projective measurements can probe non-classical work extraction and time-correlations |
| topic | Quantum Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2207.12960 |