| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
|
|
|
|
A 300-MHz Bandwidth Balanced Homodyne Detector for Continuous Variable Quantum Key Distribution |
| HUANG Duan, FANG Jian, WANG Chao, HUANG Peng**, ZENG Gui-Hua** |
State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiaotong University, Shanghai 200240
|
|
| Cite this article: |
|
HUANG Duan, FANG Jian, WANG Chao et al 2013 Chin. Phys. Lett. 30 114209 |
|
|
|
|
Abstract In Gaussian-modulated coherent-state quantum key distribution, the measurement of quadratures of coherent states is performed by using a homodyne detector. However, conventional detectors usually suffer from narrow bands. We present a method to design a high-speed shot-noise-limited balanced homodyne detector. A 300-MHz bandwidth detector is experimentally tested and the level of shot noise is 14 dB higher than the electronic noise. The results show that a detector with this method is potential to design a GHz bandwidth detector for continuous variable quantum key distribution at a low level of ratio of shot noise to electronic noise.
|
|
|
Received: 02 July 2013
Published: 30 November 2013
|
|
| PACS: |
42.50.Dv
|
(Quantum state engineering and measurements)
|
| |
03.67.Hk
|
(Quantum communication)
|
|
|
|
|
|
[1] Grosshans F and Grangier P 2002 Phys. Rev. Lett. 88 057902
[2] Grosshans F, Assche G V, Wenger J, Brouri R, Cerf N J and Grangier P 2003 Nat. Photon. 421 438
[3] Weedbrook C, Pirandola S, García-Patrón R, Cerf N J, Ralph T C, Shapiro J H and Lloyd S 2012 Rev. Mod. Phys. 84 621
[4] Qi B, Zhao Y, Ma X F, Lo H K and Qian L 2007 Phys. Rev. A 76 052323
[5] Jouguet P, Jacques S K, Leverrier A, Grangier P, Diamanti E 2013 Nat. Photon. 7 378
[6] Appel J, Hoffman D, Figueroa E and Lvovsky A I 2007 Phys. Rev. A 75 035802
[7] Yoshino K I, Aoki T and Furusawaa A 2007 Appl. Phys. Lett. 90 041111
[8] Kumar R, Barrios E, MacRae A, Cairns E, Huntington E H, Lvovsky A I 2012 Opt. Commun. 285 5259
[9] Okubo R, Hirano M, Zhang Y and Hirano T 2008 Opt. Lett. 33 001458
[10] Chi Y M, Qi B, Zhu W, Qian L, Lo H K, Youn S H, A I Lvovsky and Tian L 2011 New J. Phys. 13 013003
[11] Hirano T, Yamanaka H, Ashikaga M, Konishi T and Namiki R 2003 Phys. Rev. A 68 042331
[12] Hansen H, Aichele T, Hettich C, Lodahl P, Lvovsky A I, Mlynek J and Schiller S 2001 Opt. Lett. 26 1430
[13] Wang X Y, Bai Z L, Du P Y, Li Y M and Peng K C 2012 Chin. Phys. Lett. 29 124202
[14] Qi B, Zhao Y, Ma X F, Lo H K and Qian L 2007 Phys. Rev. A 75 052304
[15] Patrón R G and Cerf N J 2006 Phys. Rev. Lett. 97 190503
[16] Navascués M, Grosshans F and Acín A 2006 Phys. Rev. Lett. 97 190502
[17] Roumpos G and Cundiff S T 2013 J. Opt. Soc. Am. B 30 1303 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
