Targeting molecular quantum memory with embedded error correction.

Autor: Lockyer SJ; Department of Chemistry and Photon Science Institute, The University of Manchester Oxford Road Manchester M13 9PL UK richard.winpenny@manchester.ac.uk., Chiesa A; Università di Parma, Dipartimento di Scienze Matematiche Fisiche e Informatiche I-43124 Parma Italy.; UdR Parma, INSTM I-43124 Parma Italy., Timco GA; Department of Chemistry and Photon Science Institute, The University of Manchester Oxford Road Manchester M13 9PL UK richard.winpenny@manchester.ac.uk., McInnes EJL; Department of Chemistry and Photon Science Institute, The University of Manchester Oxford Road Manchester M13 9PL UK richard.winpenny@manchester.ac.uk., Bennett TS; Department of Chemistry and Photon Science Institute, The University of Manchester Oxford Road Manchester M13 9PL UK richard.winpenny@manchester.ac.uk., Vitorica-Yrezebal IJ; Department of Chemistry and Photon Science Institute, The University of Manchester Oxford Road Manchester M13 9PL UK richard.winpenny@manchester.ac.uk., Carretta S; Università di Parma, Dipartimento di Scienze Matematiche Fisiche e Informatiche I-43124 Parma Italy.; UdR Parma, INSTM I-43124 Parma Italy., Winpenny REP; Department of Chemistry and Photon Science Institute, The University of Manchester Oxford Road Manchester M13 9PL UK richard.winpenny@manchester.ac.uk.
Jazyk: angličtina
Zdroj: Chemical science [Chem Sci] 2021 Jun 02; Vol. 12 (26), pp. 9104-9113. Date of Electronic Publication: 2021 Jun 02 (Print Publication: 2021).
DOI: 10.1039/d1sc01506k
Abstrakt: The implementation of a quantum computer requires both to protect information from environmental noise and to implement quantum operations efficiently. Achieving this by a fully fault-tolerant platform, in which quantum gates are implemented within quantum-error corrected units, poses stringent requirements on the coherence and control of such hardware. A more feasible architecture could consist of connected memories, that support error-correction by enhancing coherence, and processing units, that ensure fast manipulations. We present here a supramolecular {Cr 7 Ni}-Cu system which could form the elementary unit of this platform, where the electronic spin 1/2 of {Cr 7 Ni} provides the processor and the naturally isolated nuclear spin 3/2 of the Cu ion is used to encode a logical unit with embedded quantum error-correction. We demonstrate by realistic simulations that microwave pulses allow us to rapidly implement gates on the processor and to swap information between the processor and the quantum memory. By combining the storage into the Cu nuclear spin with quantum error correction, information can be protected for times much longer than the processor coherence.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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