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. doi:10.1103/PhysRevLett.111.107007. https://resolver.caltech.edu/CaltechAUTHORS:20130128-092139092

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Abstract

We propose to use an ancilla fluxonium qubit to interact with a Majorana qubit hosted by a topological 1D 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:

URL	URL Type	Description
https://doi.org/10.1103/PhysRevLett.111.107007	DOI	Article
https://arxiv.org/abs/1301.3161	arXiv	Discussion Paper

Alternate Title:

Proposal for coherent coupling of Majorana and fluxonium qubits

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:

Institute for Quantum Information and Matter

Funders:

Funding Agency	Grant Number
Lee A. DuBridge Fellowship	UNSPECIFIED
Institute for Quantum Information and Matter (IQIM)	UNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)	UNSPECIFIED
Harvard-MIT Center for Ultracold Atoms	UNSPECIFIED
NSF	DMR-07-05472
Army Research Office (ARO)	UNSPECIFIED

Issue or Number:

Classification Code:

PACS: 74.81.Fa, 73.63.Nm, 74.20.Mn, 74.50.+r

DOI:

10.1103/PhysRevLett.111.107007

Record Number:

CaltechAUTHORS:20130128-092139092

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20130128-092139092

Usage Policy:

No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

36611

Collection:

CaltechAUTHORS

Deposited By:

Ruth Sustaita

Deposited On:

28 Jan 2013 17:39

Last Modified:

09 Nov 2021 23:23

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