
Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/1706
Title: | Coherence-assisted non-Gaussian measurement-device-independent quantum key distribution |
Authors: | Kumar, Chandan Singh, Jaskaran Bose, S. Arvind |
Keywords: | Continuous-variable Quantum key distribution Measurement-device-independent |
Issue Date: | 2019 |
Publisher: | APS Physics |
Abstract: | Non-Gaussian operations on two-mode squeezed vacuum states in continuous-variable (CV) measurement-device-independent (MDI) quantum key distribution (QKD) protocols have been shown to effectively increase the total transmission distances drastically. In this paper we show that photon subtraction on a two-mode squeezed coherent (PSTMSC) state can further improve the transmission distances remarkably. To that end we also provide a generalized covariance matrix corresponding to the PSTMSC state. We show that coherence, defined as the amount of displacement of the vacuum state, along with non-Gaussianity can help improve the performance of prevalent CV MDI QKD protocols. Furthermore, since we use realistic parameters, our technique is experimentally feasible and can be readily implemented. |
URI: | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.100.052329 http://hdl.handle.net/123456789/1706 |
Appears in Collections: | Research Articles |
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