The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
Entanglement-enhanced probing of a delicate material system
Open accessAbstract
Quantum metrology1 uses entanglement2,3,4,5 and other quantum effects6 to improve the sensitivity of demanding measurements7,8,9. Probing of delicate systems demands high sensitivity from limited probe energy and has motivated the field's key benchmark—the standard quantum limit10. Here we report the first entanglement-enhanced measurement of a delicate material system. We non-destructively probe an atomic spin ensemble by means of near-resonant Faraday rotation, a measurement that is limited by probe-induced scattering in quantum-memory and spin-squeezing applications6,11,12,13. We use narrowband, atom-resonant NOON states to beat the standard quantum limit of sensitivity by more than five standard deviations, both on a per-photon and per-damage basis. This demonstrates quantum enhancement with fully realistic loss and noise, including variable-loss effects14,15,16. The experiment opens the way to ultra-gentle probing of single atoms17, single molecules18, quantum gases19 and living cells20. Researchers report the entanglement-enhanced measurement of a delicate material system, in which they non-destructively probe an 85Rb atomic spin ensemble by near-resonant Faraday rotation. They use narrowband, atom-resonant ‘NOON’ states to beat the standard quantum limit of sensitivity by more than five standard deviations, both on a per-photon and a per-damage basis.
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Cites
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A gravitational wave observatory operating beyond the quantum shot-noise limit
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Super-resolving phase measurements with a multiphoton entangled state
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Self-citationCounting near-infrared single-photons with 95% efficiency
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Optimal Quantum Phase Estimation
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Interaction-based quantum metrology showing scaling beyond the Heisenberg limit
Napolitano, M., Koschorreck, M., Dubost, B., Behbood, N., Sewell, R. J., & Mitchell, M. W. (2011) · Nature · doi:10.1038/nature09778 · Cited by 245
Self-citationHeralding Two-Photon and Four-Photon Path Entanglement on a Chip
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Cited by
The quantum technologies roadmap: a European community view
Acín, A., Bloch, I., Buhrman, H., Calarco, T., Eichler, C., Eisert, J., Esteve, D., Gisin, N., Glaser, S. J., Jelezko, F., et al. (2018) · New Journal of Physics · doi:10.1088/1367-2630/aad1ea · Cited by 657
An entanglement-enhanced microscope
Ono, T., Okamoto, R., & Takeuchi, S. (2013) · Nature Communications · doi:10.1038/ncomms3426 · Cited by 323
Multiparameter Estimation in Networked Quantum Sensors
Proctor, T. J., Knott, P. A., & Dunningham, J. A. (2018) · Physical Review Letters · doi:10.1103/physrevlett.120.080501 · Cited by 318
“spin ensembles [55], biological systems [56, 57], atoms [58, 59] and single molecules [60]).”
BackgroundUnconditional violation of the shot-noise limit in photonic quantum metrology
Slussarenko, S., Weston, M. M., Chrzanowski, H. M., Shalm, L. K., Verma, V. B., Nam, S. W., & Pryde, G. J. (2017) · Nature Photonics · doi:10.1038/s41566-017-0011-5 · Cited by 239
Experimental phase estimation enhanced by machine learning
Lumino, A., Polino, E., Rab, A. S., Milani, G., Spagnolo, N., Wiebe, N., & Sciarrino, F. (2018) · Physical Review Applied · doi:10.1103/physrevapplied.10.044033 · Cited by 97
Metadata
- Authors
- Wolfgramm, F., Vitelli, C., Beduini, F. A., Godbout, N., & Mitchell, M. W.
- Venue
- Nature Photonics
- Published
- 2012-12-16
- Volume
- 7
- Issue
- 1
- Pages
- 28-32
- ISSN
- 1749-4885 (ISSN-L)
- 1749-4893
- OpenAlex
- W2072653652
- Cited by
- 171
- References
- 9
- FWCI
- 10.13
- Type
- journal article
- Language
- en
- Open access
- green
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