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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.
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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
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[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
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