Quantum phase magnification

O. Hosten, R. Krishnakumar, N. Engelsen, M. Kasevich, Science 352 (2016) 1552–1555.

Journal Article | Published
Hosten, OnurIST Austria ; Krishnakumar, Rajiv; Engelsen, Nils J; Kasevich, Mark A
Quantum metrology exploits entangled states of particles to improve sensing precision beyond the limit achievable with uncorrelated particles. All previous methods required detection noise levels below this standard quantum limit to realize the benefits of the intrinsic sensitivity provided by these states.We experimentally demonstrate a widely applicable method for entanglement-enhanced measurements without low-noise detection. The method involves an intermediate quantum phase magnification step that eases implementation complexity. We used it to perform squeezed-state metrology 8 decibels below the standard quantum limit with a detection system that has a noise floor 10 decibels above the standard quantum limit.
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1552 - 1555

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Hosten O, Krishnakumar R, Engelsen N, Kasevich M. Quantum phase magnification. Science. 2016;352(6293):1552-1555. doi:10.1126/science.aaf3397
Hosten, O., Krishnakumar, R., Engelsen, N., & Kasevich, M. (2016). Quantum phase magnification. Science, 352(6293), 1552–1555. https://doi.org/10.1126/science.aaf3397
Hosten, Onur, Rajiv Krishnakumar, Nils Engelsen, and Mark Kasevich. “Quantum Phase Magnification.” Science 352, no. 6293 (2016): 1552–55. https://doi.org/10.1126/science.aaf3397.
O. Hosten, R. Krishnakumar, N. Engelsen, and M. Kasevich, “Quantum phase magnification,” Science, vol. 352, no. 6293, pp. 1552–1555, 2016.
Hosten O, Krishnakumar R, Engelsen N, Kasevich M. 2016. Quantum phase magnification. Science. 352(6293), 1552–1555.
Hosten, Onur, et al. “Quantum Phase Magnification.” Science, vol. 352, no. 6293, American Association for the Advancement of Science, 2016, pp. 1552–55, doi:10.1126/science.aaf3397.
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