Superconducting pi qubit with a ferromagnetic Josephson junction

Abstract

Solid-state qubits have the potential for the large-scale integration and for the flexibility of layout for quantum computing. However, their short decoherence time due to the coupling to the environment remains an important problem to be overcome. We propose a new superconducting qubit which incorporates a spin-electronic device: the qubit consists of a superconducting ring with a ferromagnetic pi junction which has a metallic contact and a normal Josephson junction with an insulating barrier. Thus, a quantum coherent two-level state is formed without an external magnetic field. This feature and the simple structure of the qubit make it possible to reduce its size leading to a long decoherence time.

4 pages, 3 figures

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Cited by in corpus (86)

• Semiconductor Spintronics
• Controllable 0-pi Josephson junctions containing a ferromagnetic spin valve
• 0-pi Josephson tunnel junctions with ferromagnetic barrier
• Spin-dependent boundary conditions for isotropic superconducting Green's functions
• Cubic spin-orbit coupling and anomalous Josephson effect in planar junctions
• Josephson Diode Effect Induced by Valley Polarization in Twisted Bilayer Graphene
• Static and dynamic properties of 0, pi, and 0-pi ferromagnetic tunnel Josephson Junctions
• 0-pi transitions in Josephson junctions with antiferromagnetic interlayers
• Orientation-dependent Josephson effect in spin-singlet superconductor/altermagnet/spin-triplet superconductor junctions
• Josephson effect and spin-triplet pairing correlations in SF1F2S junctions
• Long-Range Superharmonic Josephson Current
• Josephson pi-state in a ferromagnetic insulator
• Macroscopic quantum dynamics of pi-junctions with ferromagnetic insulators
• Imaging spontaneous currents in superconducting arrays of pi-junctions
• Tuning of Magnetic Activity in Spin-Filter Josephson Junctions Towards Spin-Triplet Transport
• Method for reliable realization of a varphi Josephson junction
• Josephson current in a superconductor-ferromagnet junction with two non-collinear magnetic domains
• Ferromagnetic Materials for Josephson π Junctions
• Phase Control in a Spin-Triplet SQUID
• Superconducting pi qubit with three Josephson junctions
• Spectroscopy and critical temperature of diffusive superconducting/ferromagnetic hybrid structures with spin-active interfaces
• Phase Controllable Josephson Junctions for Cryogenic Memory
• Electrical and Thermal Transport in Antiferromagnet-Superconductor Junctions
• Van der Waals pi Josephson junctions
• Magnetoanisotropic Josephson effect due to interfacial spin-orbit fields in superconductor/ferromagnet/superconductor junctions
• Josephson effect in S/F/S junctions: spin bandwidth asymmetry vs. Stoner exchange
• Visualizing supercurrents in ferromagnetic Josephson junctions with various arrangements of 0 and πsegments
• Josephson Coupling and Fiske Dynamics in Ferromagnetic Tunnel Junctions
• 0-pi oscillations in nanostructured Nb/Fe/Nb Josephson junctions
• Critical Current Oscillations of Elliptical Josephson Junctions with Single-Domain Ferromagnetic Layers
• ${\phi }_0$-Josephson junction in twisted bilayer graphene induced by a valley-polarized state
• Perspective: Heusler interfaces -- opportunities beyond spintronics?
• Tunable planar Josephson junctions driven by time-dependent spin-orbit coupling
• Superconducting flux qubit with ferromagnetic Josephson $\pi$-junction operating at zero magnetic field
• Mesoscale phase separation of skyrmion-vortex matter in chiral magnet-superconductor heterostructures
• Long-range spin current driven by superconducting phase difference in a Josephson junction with double layer ferromagnets
• Role of magnetic scattering in 0-pi transitions in a superconductor/ferromagnetic metal/superconductor junction
• FMR induced Josephson Current in a Superconductor/Ferromagnet/Superconductor Junction
• Superconducting triplet pairings and anisotropic magnetoresistance effects in ferromagnet/superconductor/ferromagnet double-barrier junctions
• Proximity effect in atomic-scaled hybrid superconductor/ferromagnet structures: crucial role of electron spectra
• Magnetization induced by odd-frequency spin-triplet Cooper pairs in a Josephson junction with metallic trilayers
• Connection between zero-energy Yu-Shiba-Rusinov states and 0-$\pi$ transitions in magnetic Josephson junctions
• Pulsed Laser Deposition of High-Quality Thin Films of the Insulating Ferromagnet EuS
• Ferromagnetic 0-pi Josephson junctions
• Half-integer Shapiro Steps in Strong Ferromagnetic Josephson Junctions
• Controllable pi junction with magnetic nanostructures
• Proximity-induced superconducting gap in the intrinsic magnetic topological insulator MnBi2Te4
• Superconducting/ferromagnetic diffusive bilayer with a spin-active interface: a numerical study
• Josephson tunnel junctions with ferromagnetic $\Fe_{0.75}\Co_{0.25}$ barriers
• Theory of fractional vortex escape in a 0-kappa long Josephson junction
• Resonant tunneling in short Josephson SFS junctions
• First order phase transitions in Ferromagnet/Superconductor layered structures
• Current-phase relation in Josephson junction coupled with a magnetic dot
• Signatures of superconducting triplet pairing in Ni--Ga-bilayer junctions
• $\pi$-junction qubit in monolayer graphene
• Controllable supercurrent in mesoscopic superconductor-normal metal-ferromagnet crosslike Josephson structures
• Combined Zeeman and orbital effect on the Josephson effect in rippled graphene
• Oscillatory superconducting transition temperature in superconductor/antiferromagnet heterostructures
• A superconducting circuit realization of combinatorial gauge symmetry
• Supercurrent-induced long-range triplet correlations and controllable Josephson effect in superconductor/ferromagnet hybrids with extrinsic SOC
• Gate-tunable nonlocal Josephson effect through magnetic van der Waals bilayers
• Theory of quantum transport in Josephson junctions with a ferromagnetic insulator
• Phase jumps in Josephson junctions with time-dependent spin-orbit coupling
• Time dilation of a bound half-fluxon pair in a long Josephson junction with a ferromagnetic insulator
• Phase-controlled spin and charge currents in superconductor-ferromagnet hybrids
• Andreev spin-noise detector
• Strain designed Josephson $\pi$ junction qubits with topological insulators
• Quantum tunneling of a single semifluxon in a 0-pi Josephson junction
• Quasiparticle conductance in Spin Valve Josephson Structures
• Neel proximity effect in superconductor/antiferromagnet heterostructures
• Width of the $0-\pi$ phase transition in diffusive magnetic Josephson junctions
• Voltage-driven dynamics of ${\phi }_0$-S/F/S Josephson junctions chains
• Reduced decay in Josephson coupling across ferromagnetic junctions with spin-orbit coupling layers
• Superconductor-ferromagnet junction phase qubit
• Effect of interfaces on supercurrent through ferromagnetic materials
• Sign reversal of ac Josephson current in a ferromagnetic Josephson junction
• Half-integer Shapiro-steps in superconducting qubit with a $\pi$-Josephson junction
• Magnetic field-controlled 0-$\pi$ transitions and their experimental signatures in superconductor-ferromagnet-superconductor junctions
• Numerical study of pi-junction using spin filtering barriers
• Universal Anomaly of Dynamics at Phase Transition Points Induced by Pancharatnam-Berry Phase
• Comparison of NiFeCr and NiFe in ferromagnetic Josephson junctions
• Engineering Ponderomotive Potential for Realizing $\pi$ and $\pi /2$ Bosonic Josephson Junctions
• 0-$\pi$ transition driven by magnetic proximity effect in a Josephson junction
• Giant oscillatory Gilbert damping in superconductor/ferromagnet/superconductor junctions
• Enhancement of supercurrent through ferromagnetic materials by interface engineering
• Anomalous phase shift and superconducting diode effect in Josephson junctions via thin films of rare-earth intermetallic magnets