DocumentCode
521108
Title
Reversing the weak quantum measurement for a photonic qubit
Author
Kim, Yong-Su ; Cho, Young-Wook ; Ra, Young-Sik ; Kim, Yoon-Ho
Author_Institution
Dept. of Phys., Pohang Univ. of Sci. & Technol. (POSTECH), Pohang, South Korea
fYear
2010
fDate
16-21 May 2010
Firstpage
1
Lastpage
2
Abstract
We demonstrate the conditional reversal of a weak quantum measurement on a photonic qubit. The state recovery fidelity, determined by quantum process tomography, is shown to be over 94% for partial-collapse strength up to 0.9. We also experimentally study information gain due to the weak measurement and discuss the role of the reversing operation as an information erasure.
Keywords
Code standards; Communication standards; Detectors; Gain measurement; Measurement standards; Photonics; Physics; Quantum computing; Quantum mechanics; Tomography;
fLanguage
English
Publisher
ieee
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
Type
conf
Filename
5500717
Link To Document