publication . Preprint . Article . 2016

Phase estimation with squeezed single photons

Maria Popovic;
Open Access English
  • Published: 01 Jan 2016
  • Country: Italy
We address the performance of an interferometric setup in which a squeezed single photon interferes at a beam splitter with a coherent state. Our analysis in based on both the quantum Fisher information and the sensitivity when a Mach-Zehnder setup is considered and the difference photocurrent is detected at the output. We compare our results with those obtained feeding the interferometer with a squeezed vacuum (with the same squeezing parameter of the squeezed single photon) and a coherent state in order to have the same total number of photons circulating in the interferometer. We find that for fixed squeezing parameter and total number of photons there is a t...
arXiv: Physics::OpticsCondensed Matter::Quantum Gases
free text keywords: Quantum Physics, interferometry, squeezing, quantum estimation, Technology, T, interferometry; squeezing; quantum estimation, Settore FIS/03 - Fisica della Materia, Photocurrent, Quantum mechanics, Beam splitter, law.invention, law, Quantum efficiency, Physics, Photon, Coherent states, Amplitude, Quantum fisher information
Funded by
Quantum Probes for Complex Systems
  • Funder: European Commission (EC)
  • Project Code: 641277
  • Funding stream: H2020 | RIA
FET H2020FET PROACT: Quantum simulation
FET H2020FET PROACT: Quantum Probes for Complex Systems
31 references, page 1 of 3

QuProCS (Grant Agreement No. 641277), and by UniMI

through H2020 Transition Grant No. 14-6-3008000-625. [1] M. Kacprowicz, R. Demkowicz-Dobrzanski, W. Wasilewski,

enhanced estimation of a lossy phase shift”, Nature Phot. 4, 357

(2010). [2] J. Abadie, et al. (the LIGO Scientific Collaboration), A gravi-

noise limit, Nat. Phys. 7, 962 (2011). [3] R. Demkowicz-Dobrzan´ski, K. Banaszek, and R. Schnabel,

light-enhanced gravitational wave detector GEO 600”, Phys.

Rev. A 88, 041802(R) (2013). [4] I. Ruo Berchera, I. P. Degiovanni, S. Olivares, and M. Gen-

gravity tests”, Phys. Rev. Lett. 110, 213601 (2013). [5] I. Ruo-Berchera, I. P. Degiovanni, S. Olivares, N. Samantaray,

light in correlated interferometry”, Phys. Rev. A 92, 053821

(2015). [6] M. G. A. Paris, “Small amount of squeezing in high-sensitive

realistic interferometry”, Phys. Lett A 201, 132 (1995) [7] L. Pezze´, and A. Smerzi, “Mach-Zehnder Interferometry at the

Phys. Rev. Lett. 100, 073601 (2008). [8] S. Olivares, and M. G. A. Paris, “Optimized Interferometry with

Gaussian States”, Optics Spectr. 103, 231 (2007). [9] M. D. Lang, and C. M. Caves, “Optimal Quantum-Enhanced

111, 173601 (2013). [10] M. D. Lang, and C. M. Caves, “Optimal quantum-enhanced in-

terferometry”, Phys. Rev. A 90, 025802 (2014). [11] C. Sparaciari, S. Olivares, and M. G. A. Paris, “Bounds to pre-

31 references, page 1 of 3
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