-
基于Fabry-Perot (FP)腔的量子密钥分配系统在相位编码的量子密钥分配应用方面具有优势, 把FP腔锁定在携带密钥信息的单光子光学频率上决定着密钥的实用安全. 提出利用单光子调制解调的方法锁定FP腔.使用工作于盖革模式的单光子探测器探测单光子 (平均光子数为0.1),对离散的单光子响应脉冲累计锁定放大,获得的鉴频信号信噪比达112, 锁定后FP腔透射光频率起伏为2 MHz.
-
关键词:
- 单光子 /
- Fabry-Perot腔 /
- 频率锁定
Fabry-Peort (FP) cavity-based quantum key distribution has some advantages in the phase-coded quantum key distribution (QKD). Locking the frequency of the FP cavity transmission to the frequency of single photon carrying the key information determines the security of QKD. In this paper, we propose an FP cavity locked to a single photon (the mean photon number is about 0.1) frequency using single-photon modulation/demodulation method. The single photon detector working in the Geiger mode is used to detect modulated single photons then direactly demodulated by the lock-in amplifier. The discrete single photon response pulses accumulated fulfills the phase sensitive detection, and the signal-to-noise ratio of signal frequency discrimination is up to 112. The transmission frequency fluctuation of the locked FP is limited to 2 MHz.-
Keywords:
- single photon /
- Fabry-Perot cavity /
- frequency lock-in
[1] Piro N, Rohde F, Eschner J 2011 Nat. Phys. 7 17
[2] Nicolas G, Gre'goire R, Wolfgang T, Hugo Z 2002 Rev. Mod. Phys. 74 145
[3] Gui Y Z, Han Z F, Guo G C 2002 Prog. Phys. 22 371
[4] Xavier G B, Weid J P 2011 Opt. Lett. 36 1764
[5] Zhang L J, Wang Y G, Yin Z Q, Chen W, Yang Y, Zhang T, Huang D J, Wang S, Li F Y, Han Z F 2011 Chin. Sci. Bull. 56 2305
[6] Wei Z J, Wan W, Wang J D, Liao C J, Liu S H 2011 Acta Phys. Sin. 60 094216 (in Chinese) [魏正军, 万伟, 王金东, 廖常俊, 刘颂豪 2011 60 094216]
[7] Wang J D, Wei Z J, Zhang H, Zhang H N, Chen S, Qin X J, Guo J P, Liao C J, Liu S H 2010 Acta Phys. Sin. 59 5514 (in Chinese) [王金东, 魏正军, 张辉, 张东妮, 陈帅, 秦晓娟, 郭建平, 廖常俊, 刘颂豪 2010 59 5514]
[8] Merolla J M, Mazurenko Y, Goedgebuer J P, Porte H, Rhodes W 1999 Phys. Rev. Lett. 82 1656
[9] Merolla J M, Mazurenko Y, Goedgebuer J P, Duraffourg, Porte H, Rhodes W 1999 Phys. Rev. A 60 1899
[10] Wang J J, He B, Wang X B, Xiao L T, Jia S T 2011 Chin. Opt. Lett. 9 091404
[11] Pulford D, Robillard C, Huntington E 2005 Rev. Sci. Instrum. 76 063114
[12] Bateman J E, Murray R L D, Freegarde T 2010 J. Opt. Soc. Am. B 27 1530
[13] Huang T, Dong S L, Guo X J, Xiao L T, Jia S T 2006 Appl. Phys. Lett. 89 061102
[14] Wang X B, Wang J J, Zhang G F, Xiao L T, Jia S T 2011 Chin. Phys. B 20 064204
[15] Celebrano M, Kukura P, Renn A, Sandoghdar V 2011 Nat. Phot. 5 95
-
[1] Piro N, Rohde F, Eschner J 2011 Nat. Phys. 7 17
[2] Nicolas G, Gre'goire R, Wolfgang T, Hugo Z 2002 Rev. Mod. Phys. 74 145
[3] Gui Y Z, Han Z F, Guo G C 2002 Prog. Phys. 22 371
[4] Xavier G B, Weid J P 2011 Opt. Lett. 36 1764
[5] Zhang L J, Wang Y G, Yin Z Q, Chen W, Yang Y, Zhang T, Huang D J, Wang S, Li F Y, Han Z F 2011 Chin. Sci. Bull. 56 2305
[6] Wei Z J, Wan W, Wang J D, Liao C J, Liu S H 2011 Acta Phys. Sin. 60 094216 (in Chinese) [魏正军, 万伟, 王金东, 廖常俊, 刘颂豪 2011 60 094216]
[7] Wang J D, Wei Z J, Zhang H, Zhang H N, Chen S, Qin X J, Guo J P, Liao C J, Liu S H 2010 Acta Phys. Sin. 59 5514 (in Chinese) [王金东, 魏正军, 张辉, 张东妮, 陈帅, 秦晓娟, 郭建平, 廖常俊, 刘颂豪 2010 59 5514]
[8] Merolla J M, Mazurenko Y, Goedgebuer J P, Porte H, Rhodes W 1999 Phys. Rev. Lett. 82 1656
[9] Merolla J M, Mazurenko Y, Goedgebuer J P, Duraffourg, Porte H, Rhodes W 1999 Phys. Rev. A 60 1899
[10] Wang J J, He B, Wang X B, Xiao L T, Jia S T 2011 Chin. Opt. Lett. 9 091404
[11] Pulford D, Robillard C, Huntington E 2005 Rev. Sci. Instrum. 76 063114
[12] Bateman J E, Murray R L D, Freegarde T 2010 J. Opt. Soc. Am. B 27 1530
[13] Huang T, Dong S L, Guo X J, Xiao L T, Jia S T 2006 Appl. Phys. Lett. 89 061102
[14] Wang X B, Wang J J, Zhang G F, Xiao L T, Jia S T 2011 Chin. Phys. B 20 064204
[15] Celebrano M, Kukura P, Renn A, Sandoghdar V 2011 Nat. Phot. 5 95
计量
- 文章访问数: 7355
- PDF下载量: 536
- 被引次数: 0