Title :
Quantum-enhanced precision in unitary process tomography
Author :
Whittaker, Rebecca ; Xiao-Qi Zhou ; Cable, Hugo ; Shadbolt, Peter ; O´Brien, Jeremy L. ; Matthews, Jonathan C. F.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Bristol, Bristol, UK
Abstract :
A novel scheme for unitary quantum process tomography (QPT) is theoretically presented and implemented experimentally. Multi-photon input states are used to obtain quantum-enhanced precision for the unitary estimation. Our results are compared to standard QPT.
Keywords :
multiphoton processes; optical tomography; quantum optics; QPT; multiphoton input states; quantum-enhanced precision; unitary quantum process tomography; Optical interferometry; Optical sensors; Photonics; Quantum computing; Quantum mechanics; Standards; Tomography;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
