Reduced and projected two-particle entanglement at finite temperatures.
(2009) In Physical Review Letters 102(10).- Abstract
- We present a theory for two-particle entanglement production and detection in mesoscopic conductors at finite temperature. The entanglement of the density matrix projected out of the emitted many-body state differs from the entanglement of the reduced density matrix, detectable by current correlation measurements. Under general conditions reduced entanglement constitutes a witness for projected entanglement. Applied to the recent experiment [Neder et al., Nature (London) 448, 333 (2007)10.1038/nature05955] on a fermionic Hanbury Brown Twiss two-particle interferometer we find that despite an appreciable entanglement production in the experiment, the detectable entanglement is close to zero.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1391861
- author
- Samuelsson, Peter LU ; Neder, I and Büttiker, M
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 102
- issue
- 10
- article number
- 106804
- publisher
- American Physical Society
- external identifiers
-
- wos:000264139500053
- pmid:19392143
- scopus:63249136249
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.102.106804
- language
- English
- LU publication?
- yes
- id
- ff32468c-f1eb-4a5e-84e8-4d9ffd0429b3 (old id 1391861)
- date added to LUP
- 2016-04-01 12:32:09
- date last changed
- 2022-03-21 05:38:21
@article{ff32468c-f1eb-4a5e-84e8-4d9ffd0429b3, abstract = {{We present a theory for two-particle entanglement production and detection in mesoscopic conductors at finite temperature. The entanglement of the density matrix projected out of the emitted many-body state differs from the entanglement of the reduced density matrix, detectable by current correlation measurements. Under general conditions reduced entanglement constitutes a witness for projected entanglement. Applied to the recent experiment [Neder et al., Nature (London) 448, 333 (2007)10.1038/nature05955] on a fermionic Hanbury Brown Twiss two-particle interferometer we find that despite an appreciable entanglement production in the experiment, the detectable entanglement is close to zero.}}, author = {{Samuelsson, Peter and Neder, I and Büttiker, M}}, issn = {{1079-7114}}, language = {{eng}}, number = {{10}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Reduced and projected two-particle entanglement at finite temperatures.}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.102.106804}}, doi = {{10.1103/PhysRevLett.102.106804}}, volume = {{102}}, year = {{2009}}, }