Title :
Entanglement-enhanced measurement of a completely unknown phase
Author :
Berry, D.W. ; Xiang, G.Y. ; Higgins, B.L. ; Wiseman, H.M. ; Pryde, G.J.
Author_Institution :
Inst. for Quantum Comput., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
We demonstrate a method for achieving phase measurements with accuracy beyond the standard quantum limit using entangled states. A sophisticated feedback scheme means that no initial estimate of the phase is required.
Keywords :
Metrology; Optical feedback; Optical fiber polarization; Optical interferometry; Phase detection; Phase estimation; Phase measurement; Phase shifting interferometry; Quantum computing; Quantum entanglement;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA, USA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
