Quantum cryptography without switching |
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| Authors: | Weedbrook Christian Lance Andrew M Bowen Warwick P Symul Thomas Ralph Timothy C Lam Ping Koy |
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| Institution: | Quantum Optics Group, Department of Physics, Faculty of Science, Australian National University, ACT 0200, Australia. |
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| Abstract: | We propose a new coherent state quantum key distribution protocol that eliminates the need to randomly switch between measurement bases. This protocol provides significantly higher secret key rates with increased bandwidths than previous schemes that only make single quadrature measurements. It also offers the further advantage of simplicity compared to all previous protocols which, to date, have relied on switching. |
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