Experimental estimation of one-parameter qubit gates in the presence of phase diffusion

Davide Brivio; Simone Cialdi; Stefano Vezzoli; Berihu Teklu Gebrehiwot; Marco G. Genoni; Stefano Olivares; Matteo G.A. Paris

doi:10.1103/PhysRevA.81.012305

Experimental estimation of one-parameter qubit gates in the presence of phase diffusion

Davide Brivio
, Simone Cialdi
, Stefano Vezzoli
, Berihu Teklu Gebrehiwot
, Marco G. Genoni
, Stefano Olivares
, Matteo G.A. Paris

Mathematics

Dipartimento di Fisica dell'Università
Sezione di Milano
Università degli Studi di Milano
Institute for Scientific Interchange Foundation

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

95 Scopus citations

Abstract

We address estimation of one-parameter qubit gates in the presence of phase diffusion. We evaluate the ultimate quantum limits to precision, seek optimal probes and measurements, and demonstrate an optimal estimation scheme for polarization encoded optical qubits. An adaptive method to achieve optimal estimation in any working regime is also analyzed in detail and experimentally implemented.

Original language	British English
Article number	012305
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	81
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevA.81.012305
State	Published - 2010

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title = "Experimental estimation of one-parameter qubit gates in the presence of phase diffusion",

abstract = "We address estimation of one-parameter qubit gates in the presence of phase diffusion. We evaluate the ultimate quantum limits to precision, seek optimal probes and measurements, and demonstrate an optimal estimation scheme for polarization encoded optical qubits. An adaptive method to achieve optimal estimation in any working regime is also analyzed in detail and experimentally implemented.",

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AU - Brivio, Davide

AU - Cialdi, Simone

AU - Vezzoli, Stefano

AU - Gebrehiwot, Berihu Teklu

AU - Genoni, Marco G.

AU - Olivares, Stefano

AU - Paris, Matteo G.A.

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N2 - We address estimation of one-parameter qubit gates in the presence of phase diffusion. We evaluate the ultimate quantum limits to precision, seek optimal probes and measurements, and demonstrate an optimal estimation scheme for polarization encoded optical qubits. An adaptive method to achieve optimal estimation in any working regime is also analyzed in detail and experimentally implemented.

AB - We address estimation of one-parameter qubit gates in the presence of phase diffusion. We evaluate the ultimate quantum limits to precision, seek optimal probes and measurements, and demonstrate an optimal estimation scheme for polarization encoded optical qubits. An adaptive method to achieve optimal estimation in any working regime is also analyzed in detail and experimentally implemented.

UR - https://www.scopus.com/pages/publications/74549155021

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DO - 10.1103/PhysRevA.81.012305

M3 - Article

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Experimental estimation of one-parameter qubit gates in the presence of phase diffusion

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