Loss resilience for two-qubit state transmission using distributed phase sensitive amplification

James M. Dailey; Anjali Agarwal; Paul Toliver; Nicholas A. Peters

doi:10.1038/srep16296

Loss resilience for two-qubit state transmission using distributed phase sensitive amplification

James M. Dailey, Anjali Agarwal, Paul Toliver, Nicholas A. Peters

Computational Sciences & Engineering Div

Applied Communication Sciences

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

We transmit phase-encoded non-orthogonal quantum states through a 5-km long fibre-based distributed optical phase-sensitive amplifier (OPSA) using telecom-wavelength photonic qubit pairs. The gain is set to equal the transmission loss to probabilistically preserve input states during transmission. While neither state is optimally aligned to the OPSA, each input state is equally amplified with no measurable degradation in state quality. These results promise a new approach to reduce the effects of loss by encoding quantum information in a two-qubit Hilbert space which is designed to benefit from transmission through an OPSA.

Original language	English
Article number	16296
Journal	Scientific Reports
Volume	5
DOIs	https://doi.org/10.1038/srep16296
State	Published - Nov 2015

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© 2015, Nature Publishing Group. All rights reserved.

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Loss resilience for two-qubit state transmission using distributed phase sensitive amplification

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