Quantum Noise Filtering via Cross-Correlations

Boaz Tamir; Eliahu Cohen

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arXiv · 1308.5614

Quantum Noise Filtering via Cross-Correlations

Boaz Tamir·Eliahu Cohen

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Abstract

Motivated by successful classical models for noise reduction, we suggest a quantum technique for filtering noise out of quantum states. The purpose of this paper is twofold: presenting a simple construction of quantum cross-correlations between two wave-functions, and presenting a scheme for a quantum noise filtering. We follow a well-known scheme in classical communication theory that attenuates random noise, and show that one can build a quantum analog by using non-trace-preserving operators. By this we introduce a classically motivated signal processing scheme to quantum information theory, which can help reducing quantum noise, and particularly, phase flip noise.

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Boaz Tamir, Eliahu Cohen. 2015-04-04. Quantum Noise Filtering via Cross-Correlations. https://arxiv.org/abs/1308.5614

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