Bends In Nanotubes Allow Electric Spin Control and Coupling

Abstract

We investigate combined effects of spin-orbit coupling and magnetic field in carbon nanotubes containing one or more bends along their length. We show how bends can be used to provide electrical control of confined spins, while spins confined in straight segments remain insensitive to electric fields. Device geometries that allow general rotation of single spins are presented and analyzed. In addition, capacitive coupling along bends provides coherent spin-spin interaction, including between otherwise disconnected nanotubes, completing a universal set of one- and two-qubit gates.

6 pages, 5 figures

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Cited by in corpus (69)

• Quantum transport in carbon nanotubes
• Spin-orbit coupling, quantum dots, and qubits in monolayer transition metal dichalcogenides
• A valley-spin qubit in a carbon nanotube
• Large spin-orbit coupling in carbon nanotubes
• Valley-spin blockade and spin resonance in carbon nanotubes
• Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator
• Carbon nanotubes in electric and magnetic fields
• Long-distance spin-spin coupling via floating gates
• Helical modes in carbon nanotubes generated by strong electric fields
• Disorder-mediated electron valley resonance in carbon nanotube quantum dots
• Ground-state cooling of a carbon nanomechanical resonator by spin-polarized current
• Coupling spin qubits via superconductors
• Spin-valley blockade in carbon nanotube double quantum dots
• Impurity-assisted electric control of spin-valley qubits in monolayer MoS${}_2$
• Spin-Orbit Effects in Carbon-Nanotube Double Quantum Dots
• Readout of carbon nanotube vibrations based on spin-phonon coupling
• Rashba splitting of Cooper pairs
• Inter-valley scattering induced by Coulomb interaction and disorder in carbon-nanotube quantum dots
• Maximal Rabi frequency of an electrically driven spin in a disordered magnetic field
• Spin-Degenerate Regimes for Single Quantum Dots in Transition Metal Dichalcogenide Monolayers
• Spin-Valley Protected Kramers Pair in Bilayer Graphene
• Hyperfine and spin-orbit coupling effects on decay of spin-valley states in a carbon nanotube
• Suspended nanowires as mechanically-controlled Rashba spin-splitters
• Coherent electrical rotations of valley states in Si quantum dots using the phase of the valley-orbit coupling
• Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot
• Probing individual split Cooper-pairs using the spin qubit toolkit
• Control of vibrational states by spin-polarized transport in a carbon nanotube resonator
• Tight-binding simulations of electrically driven spin-valley transitions in carbon nanotube quantum dots
• Mechanically induced two-qubit gates and maximally entangled states for single electron spins in a carbon nanotube
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• Enhancing qubit readout through dissipative sub-Poissonian dynamics
• Geometry -- dependent effects in Majorana nanowires
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• Electrically driven spin resonance in a bent disordered carbon nanotube
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• Dephasing and Hyperfine Interaction in Carbon Nanotubes Double Quantum Dots: The Clean Limit
• Non-collinear spin-orbit magnetic fields in a carbon nanotube double quantum dot
• Mechanically induced spin resonance in a carbon nanotube
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• Electric and Magnetic Gating of Rashba-Active Weak Links
• Sub-gap spectroscopy of thermally excited quasiparticles in a Nb contacted carbon nanotube quantum dot
• Shape-sensitive Pauli blockade in a bent carbon nanotube
• DC spin generation by junctions with AC driven spin-orbit interaction
• Spin-mediated photomechanical coupling of a nanoelectromechanical shuttle
• Nanoscale magnetic resonance spectroscopy using a carbon nanotube double quantum dot
• Intra- and inter-shell Kondo effects in carbon nanotube quantum dots
• Current hot spot in the spin-valley blockade in carbon nanotubes
• Effects of magnetic fields on the Datta-Das spin field-effect transistor
• g-Tensor Control in Bent Carbon Nanotube Quantum Dots
• Effects of different lead magnetizations on the Datta-Das spin field-effect transistor
• Tunable RKKY interaction in a double quantum dot nanoelectromechanical device
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• Rashba spin-splitting of single electrons and Cooper pairs
• Spin-orbit interaction in bent carbon nanotubes: resonant spin transitions
• Orbital hyperfine interaction and qubit dephasing in carbon nanotube quantum dots
• Two-electron n-p double quantum dots in carbon nanotubes
• Spin-valley dynamics of electrically driven ambipolar carbon-nanotube quantum dots
• Spin precession in spin-orbit coupled weak links: Coulomb repulsion and Pauli quenching
• Nanotube Double Quantum Dot Spin Transducer for Scalable Quantum Information Processing
• Spin-orbit coupling and the static polarizability of single-wall carbon nanotubes
• Electronic structure of (1e,1h) states of carbon nanotube quantum dots
• Photo-spintronics of spin-orbit active electric weak links
• Spin-polarized dynamic transport in tubular two-dimensional electron gases
• Correlated insulating states in carbon nanotubes controlled by magnetic field
• Coupling of shells in a carbon nanotube quantum dot
• Acoustic phonons, spin-phonon coupling and spin relaxation via the lattice reorientation mechanism in hexagonal germanium nanowires
• Rashba proximity states in superconducting tunnel junctions
• Electrically tunable quantum interfaces between photons and spin qubits in carbon nanotube quantum dots
• Gate-dependent spin-orbit coupling in multi-electron carbon nanotubes