N. V. Semenin, A. S. Borisenko, I. V. Zalivako, I. A. Semerikov, K. Yu. Khabarova, N. N. Kolachevsky, “Optimization of the readout fidelity of the quantum state of an optical qubit in the 171yb+ ion”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2021, Volume 114, Issue 8,Pages <nobr>553

This article is cited in 13 papers

QUANTUM INFORMATION SCIENCE

Optimization of the readout fidelity of the quantum state of an optical qubit in the 171yb+ ion

N. V. Semenin^ab, A. S. Borisenko^ab, I. V. Zalivako^b, I. A. Semerikov^b, K. Yu. Khabarova^bca, N. N. Kolachevsky^bc

^a Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region
^b P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
^c Russian Quantum Center, Skolkovo, Moscow

Abstract: A scheme based on a laser cooling system has been proposed to detect the state of an optical qubit in the 171Yb+ ion. Analytical expressions have been derived for the readout fidelity including the dark photon counts and background. The parameters of the experiment have been numerically optimized to minimize the readout infidelity. The upper bound on the fidelity associated with a transient process at the beginning of the measurement procedure has been determined as 99.4

Received: 20.09.2021
Revised: 21.09.2021
Accepted: 22.09.2021

DOI: 10.31857/S123456782120009X