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Continuous variable quantum key distribution in non-Markovian channels
non-Markovian variable quantum
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2010/11/8
We address continuous variable quantum key distribution (QKD) in non-Markovian lossy channels and show how the non-Markovian features may be exploited to enhance security and/or to detect the presence...
Would one rather store squeezing or entanglement in continuous variable quantum memories?
rather store squeezing entanglement continuous variable
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2010/11/5
Given two quantum memories for continuous variables (e.g., the collective pseudo-spin of two atomic ensembles) and the possibility to perform passive optical operations (typically beam-splitters) on t...
How to decompose continuous-variable quantum logic gates
continuous-variable quantum logic gates
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2010/10/29
We present a general and relatively efficient method for decomposing an arbitrary exponential operator of bosonic mode operators into a set of universal logic gates. Our work is mainly oriented toward...
Entanglement evolution of continuous variable quantum states
Entanglement evolution continuous variable quantum states
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2010/3/10
We show when one of the modes of a initially bipartite Gaussian pure state interacts with a Gaussian noisy channel $\uppercase\expandafter{\romannumeral1}\otimes \$$, the evolution of entanglement can...
Efficient reconciliation protocol for discrete-variable quantum key distribution
Efficient reconciliation protocol discrete-variable quantum key distribution
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2010/4/13
Reconciliation is an essential part of any secret-key agreement protocol and hence of a Quantum Key Distribution (QKD) protocol, where two legitimate parties are given correlated data and want to agre...