Evidence map›Paper›PMID 38395978›Full record

ArticleNature communications2024

Real-time two-axis control of a spin qubit.

Fabrizio Berritta, Torbjørn Rasmussen, Jan A Krzywda, Joost van der Heijden, Federico Fedele, Saeed Fallahi, Geoffrey C Gardner, Michael J Manfra, Evert van Nieuwenburg, Jeroen Danon and 2 more

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
5.6field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 16 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 4 countries.

Fabrizio BerrittaCenter for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100, Copenhagen, Denmark. fabrizio.berritta@nbi.ku.dk.ORCID http://orcid.org/0000-0002-7452-9017
Torbjørn RasmussenCenter for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100, Copenhagen, Denmark.ORCID http://orcid.org/0000-0001-6592-507X
Jan A KrzywdaLorentz Institute and Leiden Institute of Advanced Computer Science, Leiden University, P.O. Box 9506, 2300 RA, Leiden, The Netherlands.
Joost van der HeijdenQDevil, Quantum Machines, 2750, Ballerup, Denmark.
Federico FedeleCenter for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100, Copenhagen, Denmark.ORCID http://orcid.org/0000-0003-4466-5576
Saeed FallahiDepartment of Physics and Astronomy, Purdue University, West Lafayette, IN, 47907, USA.
Geoffrey C GardnerBirck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA.ORCID http://orcid.org/0000-0001-5469-9257
Michael J ManfraDepartment of Physics and Astronomy, Purdue University, West Lafayette, IN, 47907, USA.ORCID http://orcid.org/0000-0002-2049-8438
Evert van NieuwenburgLorentz Institute and Leiden Institute of Advanced Computer Science, Leiden University, P.O. Box 9506, 2300 RA, Leiden, The Netherlands.
Jeroen DanonDepartment of Physics, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway.ORCID http://orcid.org/0000-0001-8088-8772
Anasua ChatterjeeCenter for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100, Copenhagen, Denmark. anasua.chatterjee@nbi.ku.dk.ORCID http://orcid.org/0000-0002-7060-178X
Ferdinand KuemmethCenter for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100, Copenhagen, Denmark. kuemmeth@nbi.dk.ORCID http://orcid.org/0000-0003-3675-7331
University of Copenhagen · DKPurdue University West Lafayette · USLeiden University · NLNorwegian University of Science and Technology · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Optimal control of qubits requires the ability to adapt continuously to their ever-changing environment. We demonstrate a real-time control protocol for a two-electron singlet-triplet qubit with two fluctuating Hamiltonian parameters. Our approach leverages single-shot readout classification and dynamic waveform generation, allowing full Hamiltonian estimation to dynamically stabilize and optimize the qubit performance. Powered by a field-programmable gate array (FPGA), the quantum control electronics estimates the Overhauser field gradient between the two electrons in real time, enabling controlled Overhauser-driven spin rotations and thus bypassing the need for micromagnets or nuclear polarization protocols. It also estimates the exchange interaction between the two electrons and adjusts their detuning, resulting in extended coherence of Hadamard rotations when correcting for fluctuations of both qubit axes. Our study highlights the role of feedback in enhancing the performance and stability of quantum devices affected by quasistatic noise.

Identifiers

PMID38395978
PMCPMC10891052
OpenAlexW4392111483

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.