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Demetrios Kalamidas

Publications and source records attributed to Demetrios Kalamidas.

4 recordsLinked to original sources
arXiv2006

Linear optical scheme for error-free entanglement distribution and a quantum repeater

We present a linear optical scheme for error-free distribution of two-photon polarization entangled Bell states over noisy channels. The scheme can be applied to an elementary quantum repeater protocol with potentially significant improvements in efficiency and system complexity. The scheme is based on the use of polarization and time-bin encoding of photons and can perform single-pair, single-step purification with currently available technology.

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arXiv2005

Possibly novel demonstration of nonlocality for two maximally entangled particles

We present, at the gedanken level, a possibly novel non-statistical demonstration of nonlocality for two maximally entangled particles. The argument requires only two alternative experimental contexts, only one and the same single-particle observable, and leads to a contradiction with a constrained form of local realism in 50% of experimental runs. However, the argument is based on a 'plausible' but not definitive notion of locality.

quant-ph↗
arXiv2005

Single-photon quantum error rejection and correction with linear optics

We present single-photon schemes for quantum error rejection and correction with linear optics. In stark contrast to other known proposals, our schemes do not require multi-photon entangled states, are not probabilistic, and their application is not restricted to single bit-flip errors.

quant-ph↗