Title:
MAJORANA PAIR BASED QUBITS FOR FAULT TOLERANT QUANTUM COMPUTING ARCHITECTURE USING SUPERCONDUCTING GOLD SURFACE STATES
Document Type and Number:
WIPO Patent Application WO/2020/227338
Kind Code:
A3
Abstract:
Under certain conditions, a fermion in a superconductor can separate in space into two parts known as Majorana zero modes, which are immune to decoherence from local noise sources and are attractive building blocks for quantum computers. Here we disclose a metal-based heterostructure platform to produce these Majorana zero modes which utilizes the surface states of certain metals in combination with a ferromagnetic insulator and a superconductor. This platform has the advantage of having a robust energy scale and the possibility of realizing complex circuit designs using lithographic methods. The Majorana zero modes are interrogated using planar tunnel junctions and electrostatic gates to selectively tunnel into designated pairs of Majorana zero modes. We give example of qubit designs and circuits that are particularly suitable for the metal-based heterostructures.
Inventors:
MOODERA JAGADEESH (US)
LEE PATRICK (US)
WEI PENG (US)
MANNA SUJIT (IN)
LEE PATRICK (US)
WEI PENG (US)
MANNA SUJIT (IN)
Application Number:
PCT/US2020/031559
Publication Date:
January 07, 2021
Filing Date:
May 06, 2020
Export Citation:
Assignee:
MASSACHUSETTS INST TECHNOLOGY (US)
MOODERA JAGADEESH S (US)
LEE PATRICK A (US)
WEI PENG (US)
MANNA SUJIT (IN)
MOODERA JAGADEESH S (US)
LEE PATRICK A (US)
WEI PENG (US)
MANNA SUJIT (IN)
International Classes:
H01L39/02; H01L27/18; H01L39/16; H01L39/22
Domestic Patent References:
| WO2019074557A1 | 2019-04-18 |
Foreign References:
| US20190013457A1 | 2019-01-10 | |||
| US20130299783A1 | 2013-11-14 | |||
| US20200027971A1 | 2020-01-23 | |||
| US20200227636A1 | 2020-07-16 |
Other References:
DAS ET AL.: "Zero-bias peaks and splitting in an AI-lnAs nanowire topological superconductor as a signature of Majorana fermions", NATURE PHYSICS, vol. 8, 11 November 2012 (2012-11-11), pages 887 - 895, XP055735577, DOI: 10.1038/nphys2479
MAO ET AL.: "Robustness of Majorana modes and minigaps in a spin-orbit-coupled semiconductor -superconductor heterostructure", PHYSICAL REVIEW B, vol. 82, no. 174506, 2010, pages 1 - 11, XP080488874
MAO ET AL.: "Robustness of Majorana modes and minigaps in a spin-orbit-coupled semiconductor -superconductor heterostructure", PHYSICAL REVIEW B, vol. 82, no. 174506, 2010, pages 1 - 11, XP080488874
Attorney, Agent or Firm:
COLICE, Christopher, Max et al. (US)
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