Quantum computation with graphene nanoribbon
arXiv:0808.1618 · doi:10.1088/1367-2630/11/12/123005
Abstract
We propose a scalable scheme to implement quantum computation in graphene nanoribbon. It is shown that electron or hole can be naturally localized in each zigzag region for a graphene nanoribbon with a sequence of Z-shaped structure without exploiting any confined gate. An one-dimensional graphene quantum dots chain is formed in such graphene nanoribbon, where electron or hole spin can be encoded as qubits. The coupling interaction between neighboring graphene quantum dots is found to be always-on Heisenberg type. Applying the bang-bang control strategy and decoherence free subspaces encoding method, universal quantum computation is argued to be realizable with the present techniques.
10 pages, 4 figures
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Cited by in corpus (13)
- Spin Splitting of Dopant Edge States in Magnetic Zigzag Graphene Nanoribbons
- Towards edge engineering of two-dimensional layered transition-metal dichalcogenides by chemical vapor deposition
- Ab initio spin-flip conductance of hydrogenated graphene nanoribbons: Spin-orbit interaction and scattering with local impurity spins
- Gates controlled parallel-coupled double quantum dot on both single layer and bilayer graphene
- Probing local moments in nanographenes with electron tunneling spectroscopy
- Molecule States in a Gate Tunable Graphene Double Quantum Dot
- Quantum computation with two-dimensional graphene quantum dots
- Electric control of tunneling energy in graphene double dots
- Determining graphene's induced band gap with magnetic and electric emitters
- Universal Scaling of Electron Transmission for Nearly Ballistic and Quantum Dragon Nanodevices
- Tuning inter-dot tunnel coupling of an etched graphene double quantum dot by adjacent metal gates
- Kagome edge states under lattice termination, spin-orbit coupling, and magnetic order
- Two-and three-qubit room-temperature graphene quantum gates