Plug-and-play dual-phase-modulated continuous-variable quantum key distribution with photon subtraction

Plug-and-play dual-phase-modulated continuous-variable quantum key distribution (CVQKD) protocol can effectively solve the security loopholes associated with transmitting local oscillator (LO). However, this protocol has larger excess noise compared with one-way Gaussian-modulated coherent-states scheme, which limits the maximal transmission distance to a certain degree. In this paper, we show a reliable solution for this problem by employing non-Gaussian operation, especially, photon subtraction operation, which provides a way to improve the performance of plug-and-play dual-phase-modulated CVQKD protocol. The photon subtraction operation shows experimental feasibility in the plug-andplay configuration since it can be implemented under current technology. Security results indicate that the photon subtraction operation can evidently enhance the maximal transmission distance of the plug-and-play dual-phase-modulated CVQKD protocol, which effectively makes up the drawback of the original one. Furthermore, we achieve the tighter bound of the transmission distance by considering the finite-size effect, which is more practical compared with that achieved in the asymptotic limit.

[1]  P. Grangier,et al.  Finite-size analysis of a continuous-variable quantum key distribution , 2010, 1005.0339.

[2]  Peng Huang,et al.  Performance improvement of continuous-variable quantum key distribution via photon subtraction , 2013 .

[3]  G. Guo,et al.  Quantum hacking of a continuous-variable quantum-key-distribution system using a wavelength attack , 2013, 1302.0090.

[4]  Kan Wang,et al.  Two-qubit entangled state teleportation via optimal POVM and partially entangled GHZ state , 2018 .

[5]  P. Grangier,et al.  Continuous variable quantum cryptography using coherent states. , 2001, Physical review letters.

[6]  Tao Wang,et al.  Continuous-variable quantum key distribution based on a plug-and-play dual-phase-modulated coherent-states protocol , 2016 .

[7]  Leif Katsuo Oxenløwe,et al.  High-dimensional quantum key distribution based on multicore fiber using silicon photonic integrated circuits , 2016, npj Quantum Information.

[8]  Guang-Can Guo,et al.  Continuous-variable-entanglement distillation with photon addition , 2013 .

[9]  Eleni Diamanti,et al.  Experimental demonstration of long-distance continuous-variable quantum key distribution , 2012, Nature Photonics.

[10]  Peng Huang,et al.  High-speed continuous-variable quantum key distribution without sending a local oscillator. , 2015, Optics letters.

[11]  S. McLaughlin,et al.  Quantum key distribution over 25 km with an all-fiber continuous-variable system , 2007, 0706.4255.

[12]  Peng Huang,et al.  Long-distance continuous-variable quantum key distribution by controlling excess noise , 2016, Scientific Reports.

[13]  Hao Qin,et al.  Polarization attack on continuous-variable quantum key distribution system , 2013, Security + Defence.

[14]  Peng Huang,et al.  Multichannel parallel continuous-variable quantum key distribution with Gaussian modulation , 2013, 1310.2405.

[15]  V. Scarani,et al.  The security of practical quantum key distribution , 2008, 0802.4155.

[16]  A. Acín,et al.  Security bounds for continuous variables quantum key distribution. , 2004, Physical review letters.

[17]  Manuel Gessner,et al.  Efficient entanglement criteria for discrete, continuous, and hybrid variables , 2016, 1608.02421.

[18]  Seth Lloyd,et al.  Gaussian quantum information , 2011, 1110.3234.

[19]  Peng Huang,et al.  State-discrimination attack on discretely modulated continuous-variable quantum key distribution , 2014 .

[20]  H. Weinfurter,et al.  Free-Space distribution of entanglement and single photons over 144 km , 2006, quant-ph/0607182.

[21]  H. Bechmann-Pasquinucci,et al.  Quantum cryptography , 2001, quant-ph/0101098.

[22]  Bingjie Xu,et al.  Non-Gaussian postselection and virtual photon subtraction in continuous-variable quantum key distribution , 2016, 1601.02799.

[23]  M. Curty,et al.  Secure quantum key distribution , 2014, Nature Photonics.

[24]  Anthony Leverrier,et al.  Composable security proof for continuous-variable quantum key distribution with coherent States. , 2014, Physical review letters.

[25]  J Fan,et al.  Invited review article: Single-photon sources and detectors. , 2011, The Review of scientific instruments.

[26]  Nicolas Gisin,et al.  Implementation of continuous variable quantum cryptography in optical fibres using a go-&-return configuration , 2006, Quantum Inf. Comput..

[27]  H. Lo,et al.  Experimental study on the Gaussian-modulated coherent-state quantum key distribution over standard telecommunication fibers , 2007, 0709.3666.

[28]  Anthony Leverrier,et al.  Unconditional security proof of long-distance continuous-variable quantum key distribution with discrete modulation. , 2008, Physical review letters.

[29]  N. Gisin,et al.  Trojan-horse attacks on quantum-key-distribution systems (6 pages) , 2005, quant-ph/0507063.

[30]  Ji-suo Wang,et al.  Evolution of a two-mode squeezed vacuum for amplitude decay via continuous-variable entangled state approach , 2018, Frontiers of Physics.

[31]  Matteo G. A. Paris,et al.  Noisy quantum phase communication channels , 2015 .

[32]  H. Weinfurter,et al.  Entanglement-based quantum communication over 144km , 2007 .

[33]  S. Olivares,et al.  Quantum phase communication channels in the presence of static and dynamical phase diffusion , 2015, 1505.03160.

[34]  R Laflamme,et al.  Entangled quantum key distribution over two free-space optical links. , 2008, Optics express.

[35]  Yijun Wang,et al.  Performance improvement of continuous-variable quantum key distribution with an entangled source in the middle via photon subtraction , 2017 .

[36]  A. Furusawa,et al.  Entanglement swapping between discrete and continuous variables. , 2014, Physical review letters.

[37]  Masahide Sasaki,et al.  Entanglement evaluation of non-Gaussian states generated by photon subtraction from squeezed states , 2005, quant-ph/0512069.

[38]  P. Grangier,et al.  Continuous-variable quantum-key-distribution protocols with a non-Gaussian modulation , 2011, Physical Review A.

[39]  W. Wootters,et al.  A single quantum cannot be cloned , 1982, Nature.

[40]  Zheshen Zhang,et al.  A 24 km fiber-based discretely signaled continuous variable quantum key distribution system. , 2009, Optics express.

[41]  G. Vidal,et al.  Computable measure of entanglement , 2001, quant-ph/0102117.

[42]  Tao Wang,et al.  Field demonstration of a continuous-variable quantum key distribution network. , 2016, Optics letters.

[43]  L. Liang,et al.  Local oscillator fluctuation opens a loophole for Eve in practical continuous-variable quantum-key-distribution systems , 2013, 1303.6043.

[44]  Frédéric Grosshans.  Collective attacks and unconditional security in continuous variable quantum key distribution. , 2005, Physical review letters.

[45]  Lo,et al.  Unconditional security of quantum key distribution over arbitrarily long distances , 1999, Science.

[46]  Mu-Sheng Jiang,et al.  Wavelength attack on practical continuous-variable quantum-key-distribution system with a heterodyne protocol , 2013 .

[47]  Stefano Pirandola,et al.  High-rate measurement-device-independent quantum cryptography , 2013, Nature Photonics.

[48]  Gerd Leuchs,et al.  Trojan-horse attacks threaten the security of practical quantum cryptography , 2014, 1406.5813.

[49]  Mario Berta,et al.  Continuous variable quantum key distribution: finite-key analysis of composable security against coherent attacks. , 2012 .

[50]  Yu-Bo Sheng,et al.  Heralded amplification of single-photon entanglement with polarization feature , 2018, Frontiers of Physics.

[51]  Weidong Zhou,et al.  Entanglement of coherent superposition of photon-subtraction squeezed vacuum , 2017 .

[52]  Duan Huang,et al.  Balancing four-state continuous-variable quantum key distribution with linear optics cloning machine , 2017 .

[53]  Xiang Peng,et al.  Continuous-variable quantum key distribution with Gaussian source noise , 2011, 1101.0871.

[54]  Peng Huang,et al.  Continuous-variable quantum key distribution with 1 Mbps secure key rate. , 2015, Optics express.

[55]  N. Cerf,et al.  Unconditional optimality of Gaussian attacks against continuous-variable quantum key distribution. , 2006, Physical Review Letters.