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Proposal for Coherent Coupling of Majorana Zero Modes and Superconducting Qubits Using the 4π Josephson Effect

Pekker, David and Hou, Chang-Yu and Manucharyan, Vladimir E. and Demler, Eugene (2013) Proposal for Coherent Coupling of Majorana Zero Modes and Superconducting Qubits Using the 4π Josephson Effect. Physical Review Letters, 111 (10). Art. No. 107007. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20131010-151748398

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Abstract

We propose to use an ancilla fluxonium qubit to interact with a Majorana qubit hosted by a topological one-dimensional wire. The coupling is obtained using the Majorana qubit-controlled 4π Josephson effect to flux bias the fluxonium qubit. We demonstrate how this coupling can be used to sensitively identify topological superconductivity, to measure the state of the Majorana qubit, to construct 2-qubit operations, and to implement quantum memories with topological protection.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.111.107007 DOIArticle
http://link.aps.org/doi/10.1103/PhysRevLett.111.107007PublisherArticle
Additional Information:© 2013 American Physical Society. Received 28 January 2013; published 5 September 2013. It is our pleasure to thank J. Sau, D. Abanin, C. Marcus, and A. Akhmerov for useful discussions. We would like to thank the KITP for its hospitality. D. P. thanks the Lee A. DuBridge fellowship and the IQIM, C.-Y.H. thanks the DARPA-QuEST program, and E. D. thanks the Harvard-MIT CUA, NSF Grant No. DMR-07-05472, ARO-MURI on Atomtronics, and ARO MURI Quism program.
Group:IQIM, Institute for Quantum Information and Matter
Funders:
Funding AgencyGrant Number
Lee A. DuBridge FellowshipUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
DARPA-QuEST ProgramUNSPECIFIED
Harvard-MIT CUA UNSPECIFIED
NSFDMR-07-05472
ARO-MURI Atomtronics ProgramUNSPECIFIED
ARO-MURI Quism ProgramUNSPECIFIED
Classification Code:PACS: 74.81.Fa, 73.63.Nm, 74.20.Mn, 74.50.+r
Record Number:CaltechAUTHORS:20131010-151748398
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131010-151748398
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41878
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:10 Oct 2013 22:28
Last Modified:10 Oct 2013 22:28

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