Journal
PHYSICAL REVIEW A
Volume 85, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.010301
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Funding
- Australian Research Council [CE110001027, DP0984863]
- National Research Foundation
- Ministry of Education, Singapore
- CNPq
- FAPERJ
- INCT-Informacao Quantica
- Australian Research Council [DP0984863] Funding Source: Australian Research Council
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We analyze the security and feasibility of a protocol for quantum key distribution (QKD) in a context where only one of the two parties trusts his measurement apparatus. This scenario lies naturally between standard QKD, where both parties trust their measurement apparatuses, and device-independent QKD (DI-QKD), where neither do, and can be a natural assumption in some practical situations. We show that the requirements for obtaining secure keys are much easier to meet than for DI-QKD, which opens promising experimental opportunities. We clarify the link between the security of this one-sided DI-QKD scenario and the demonstration of quantum steering, in analogy to the link between DI-QKD and the violation of Bell inequalities.
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