Local and nonlocal observables in quantum optics
It is pointed out that there exists an unambiguous definition of locality that enables one to distinguish local and nonlocal quantities. Observables of both types coexist in quantum optics, but one must be very careful when attempting to measure them. A nonlocal observable that formally depends on t...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/16/11/113056 |
| _version_ | 1797751536244228096 |
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| author | Iwo Bialynicki-Birula |
| author_facet | Iwo Bialynicki-Birula |
| author_sort | Iwo Bialynicki-Birula |
| collection | DOAJ |
| description | It is pointed out that there exists an unambiguous definition of locality that enables one to distinguish local and nonlocal quantities. Observables of both types coexist in quantum optics, but one must be very careful when attempting to measure them. A nonlocal observable that formally depends on the spatial position ${\boldsymbol{r}} $ cannot be locally measured without disturbing the measurements of this observable at all other positions. |
| first_indexed | 2024-03-12T16:50:58Z |
| format | Article |
| id | doaj.art-c03a4535eefb4aeb913c53054995de8b |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:50:58Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-c03a4535eefb4aeb913c53054995de8b2023-08-08T11:21:53ZengIOP PublishingNew Journal of Physics1367-26302014-01-01161111305610.1088/1367-2630/16/11/113056Local and nonlocal observables in quantum opticsIwo Bialynicki-Birula0Center for Theoretical Physics, Polish Academy of Sciences , Al. Lotników 32/46, 02-668 Warsaw, PolandIt is pointed out that there exists an unambiguous definition of locality that enables one to distinguish local and nonlocal quantities. Observables of both types coexist in quantum optics, but one must be very careful when attempting to measure them. A nonlocal observable that formally depends on the spatial position ${\boldsymbol{r}} $ cannot be locally measured without disturbing the measurements of this observable at all other positions.https://doi.org/10.1088/1367-2630/16/11/113056local observablesquantum opticsangular momentum42.50.-p42.50.Tx03.50.De |
| spellingShingle | Iwo Bialynicki-Birula Local and nonlocal observables in quantum optics New Journal of Physics local observables quantum optics angular momentum 42.50.-p 42.50.Tx 03.50.De |
| title | Local and nonlocal observables in quantum optics |
| title_full | Local and nonlocal observables in quantum optics |
| title_fullStr | Local and nonlocal observables in quantum optics |
| title_full_unstemmed | Local and nonlocal observables in quantum optics |
| title_short | Local and nonlocal observables in quantum optics |
| title_sort | local and nonlocal observables in quantum optics |
| topic | local observables quantum optics angular momentum 42.50.-p 42.50.Tx 03.50.De |
| url | https://doi.org/10.1088/1367-2630/16/11/113056 |
| work_keys_str_mv | AT iwobialynickibirula localandnonlocalobservablesinquantumoptics |