Experimental Demonstration of a Cheap and Accurate Phase Estimation

Rudinger, Kenneth; Kimmel, Shelby; Lobser, Daniel; Maunz, Peter

doi:10.1103/PhysRevLett.118.190502

Title: Experimental Demonstration of a Cheap and Accurate Phase Estimation

Journal Article · Thu May 11 00:00:00 EDT 2017 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.118.190502· OSTI ID:1361649

Rudinger, Kenneth ^[1]; Kimmel, Shelby ^[2]; Lobser, Daniel ^[3]; Maunz, Peter ^[3]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Computing Research
Univ. of Maryland, College Park, MD (United States). Joint Center for Quantum Information and Computer Science (QuICS)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We demonstrate an experimental implementation of robust phase estimation (RPE) to learn the phase of a single-qubit rotation on a trapped Yb⁺ ion qubit. Here, we show this phase can be estimated with an uncertainty below 4 × 10^-4 rad using as few as 176 total experimental samples, and our estimates exhibit Heisenberg scaling. Unlike standard phase estimation protocols, RPE neither assumes perfect state preparation and measurement, nor requires access to ancillae. We crossvalidate the results of RPE with the more resource-intensive protocol of gate set tomography.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: US Army Research Office (ARO); USDOE National Nuclear Security Administration (NNSA); USDOD

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1361649

Alternate ID(s):: OSTI ID: 1356741

Report Number(s):: SAND-2017-0108J; PRLTAO; 650211; TRN: US1702740

Journal Information:: Physical Review Letters, Vol. 118, Issue 19; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 19 works

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Experimental quantum verification in the presence of temporally correlated noise Mavadia, S.; Edmunds, C. L.; Hempel, C. npj Quantum Information, Vol. 4, Issue 1 https://doi.org/10.1038/s41534-017-0052-0	journal	February 2018
Real-time calibration with spectator qubits Majumder, Swarnadeep; Andreta de Castro, Leonardo; Brown, Kenneth R. npj Quantum Information, Vol. 6, Issue 1 https://doi.org/10.1038/s41534-020-0251-y	journal	February 2020
Trapped-ion quantum computing: Progress and challenges Bruzewicz, Colin D.; Chiaverini, John; McConnell, Robert Applied Physics Reviews, Vol. 6, Issue 2 https://doi.org/10.1063/1.5088164	journal	June 2019
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Calibration of Quantum Sensors by Neural Networks Cimini, Valeria; Gianani, Ilaria; Spagnolo, Nicolò Physical Review Letters, Vol. 123, Issue 23 https://doi.org/10.1103/physrevlett.123.230502	journal	December 2019
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Heisenberg-Scaling Measurement Protocol for Analytic Functions with Quantum Sensor Networks Qian, Kevin; Eldredge, Zachary; Ge, Wenchao arXiv https://doi.org/10.48550/arxiv.1901.09042	text	January 2019
Real-time calibration with spectator qubits Majumder, Swarnadeep; de Castro, Leonardo Andreta; Brown, Kenneth R. arXiv https://doi.org/10.48550/arxiv.1907.03864	text	January 2019

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