Recovery of qubit coherence by noise-eater technique

Miroslav Gavenda; Lucie Čelechovská; Miloslav Dušek; Radim Filip

doi:10.1117/12.2052419

1 May 2014 Recovery of qubit coherence by noise-eater technique

Miroslav Gavenda, Lucie Čelechovská, Miloslav Dušek, Radim Filip

Proceedings Volume 9136, Nonlinear Optics and Its Applications VIII; and Quantum Optics III; 91362E (2014) https://doi.org/10.1117/12.2052419
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

We propose a quantum noise eater for a single qubit and experimentally verify its performance for recovery of a superposition carried by a dual-rail photonic qubit. We consider a case when only one of the rails (e.g., one of interferometric arms) is vulnerable to noise. A coherent but randomly arriving photon penetrating into this single rail causes a change of its state, which results in an error in a subsequent quantum information processing. We theoretically prove and experimentally demonstrate a conditional full recovery of the superposition by this quantum noise eater.

Citation Download Citation

Miroslav Gavenda, Lucie Čelechovská, Miloslav Dušek, and Radim Filip "Recovery of qubit coherence by noise-eater technique", Proc. SPIE 9136, Nonlinear Optics and Its Applications VIII; and Quantum Optics III, 91362E (1 May 2014); https://doi.org/10.1117/12.2052419

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