Journal article
Loss-tolerant state engineering for quantum-enhanced metrology via the reverse Hong-Ou-Mandel effect
- Abstract:
- Highly entangled quantum states, shared by remote parties, are vital for quantum communications and metrology. Particularly promising are the N00N states-entangled N-photon wavepackets delocalized between two different locations-which outperform coherent states in measurement sensitivity. However, these states are notoriously vulnerable to losses, making them difficult to both share them between remote locations and recombine in order to exploit interference effects. Here we address this challenge by utilizing the reverse Hong-Ou-Mandel effect to prepare a high-fidelity two-photon N00N state shared between two parties connected by a lossy optical medium. We measure the prepared state by two-mode homodyne tomography, thereby demonstrating that the enhanced phase sensitivity can be exploited without recombining the two parts of the N00N state. Finally, we demonstrate the application of our method to remotely prepare superpositions of coherent states, known as Schrödinger's cat states.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 974.1KB, Terms of use)
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- Publisher copy:
- 10.1038/ncomms11925
Authors
- Publisher:
- Springer Nature
- Journal:
- Nature Communications More from this journal
- Volume:
- 7
- Issue:
- 1
- Article number:
- 11925
- Place of publication:
- England
- Publication date:
- 2016-06-21
- Acceptance date:
- 2016-05-11
- DOI:
- EISSN:
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2041-1723
- Pmid:
-
27324115
- Language:
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English
- Keywords:
- Pubs id:
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917333
- Local pid:
-
pubs:917333
- Deposit date:
-
2020-10-21
Terms of use
- Copyright holder:
- Ulanov et al.
- Copyright date:
- 2016
- Rights statement:
- ©2016, The Author(s)
- Notes:
- This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
- Licence:
- CC Attribution (CC BY)
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