Publication:
Signal detection without finite-energy limits to quantum resolution

Loading...
Thumbnail Image
Full text at PDC
Publication Date
2013-04
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Masson
Citations
Google Scholar
Research Projects
Organizational Units
Journal Issue
Abstract
We show that there are extremely simple signal detection schemes where the finiteness of energy resources places no limit on the resolution. On the contrary, larger resolution can be obtained with lower energy. To this end the generator of the signal-dependent transformation encoding the signal information on the probe state must be different from the energy. We show that the larger the deviation of the probe state from being the minimum-uncertainty state, the better the resolution.
Description
© 2012 Elsevier Inc. A.L. acknowledges Drs. A. Rivas and M.J.W. Hall for enlightening comments. This work was supported by Project No. FIS2008-01267 of the Spanish Direccion General de Investigacion del Ministerio de Ciencia e Innovacion, and from Project QUITEMAD S2009-ESP-1594 of the Consejeria de Educacion de la Comunidad de Madrid.
Keywords
Citation
[1] V. Giovannetti, S. Lloyd, L. Maccone, Science 306 (2004) 1330-1336. [2] A. Rivas, A. Luis, New J. Phys. 14 (2012) 093052. [3] V. Giovannetti, S. Lloyd, L. Maccone, Phys. Rev. Lett. 108 (2012) 260405. [4] M. J. W. Hall, D. W. Berry, M. Zwierz, H. M. Wiseman, Phys. Rev. A 85 (2012) 041802(R). [5] M. Tsang, Phys. Rev. Lett. 108 (2012) 230401. [6] V. Giovannetti, L. Maccone, Phys. Rev. Lett. 108 (2012) 210404. [7] M. J. W. Hall, H. M. Wiseman, New J. Phys. 14 (2012) 033040. [8] Y. Gao, H. Lee, J. Phys. A 45 (2012) 415306. [9] R. Nair, arXiv:1204.3761 [quant-ph]. [10] A. Luis, SPIE Reviews 1 (2010) 018006. [11] M. Napolitano, M. Koschorreck, B. Dubost, N. Behbood, R. J. Sewell, M. W. Mitchell, Nature 471 (2011) 486-489. [12] V. B. Braginsky, F.Ya. Khalili, Phys. Lett. A 147 (1990) 251-256. [13] V. B. Braginsky, F. Ya. Khalili, Rev. Mod. Phys. 68 (1996) 1-11. [14] A. Luis, Opt. Lett. 31 (2006) 3644-3646. [15] A. Luis, Phys. Rev. A 75 (2007) 052115. [16] S. Zozor, M. Portesi, C. Vignat, Physica A 387 (2008) 4800-4808. [17] S. L. Braunstein, Phys. Rev. Lett. 69 (1992) 3598-3601. [18] S. L. Braunstein, C. M. Caves, Phys. Rev. Lett. 72 (1994) 3439-3443. [19] D. Maldonado-Mundo, A. Luis, Phys. Rev. A 80 (2009) 063811. [20] R. Lynch, Phys. Rep. 256 (1995) 367-436.
Collections