Universal Quantum Computing with Twist-Free and Temporally Encoded Lattice Surgery

Universal teleportation with a twist

We give a transfer theorem for teleportation based on twisting the entanglement measurement. This allows one to say what local unitary operation must be performed to complete the teleportation in any situation, generalizing the scheme to include overcomplete measurements, non-Abelian groups of local unitary operations (e.g., angular momentum teleportation), and the effect of nonmaximally entang...

Lattice-Plasmon Quantum Features

in this work, some of the lattice plasmon quantum features are examined. Initially, the interaction of the far-field photonic mode and the nanoparticle plasmon mode is investigated. We probe the optical properties of the array plasmon that are dramatically affected by the array geometry. It is notable to mention that the original goal of this work is to examine the quantum feature of the array ...

On Universal and Fault-Tolerant Quantum Computing

Universal quantum computing with spin and valley states

We investigate a two-electron double quantum dot with both spin and valley degrees of freedom as they occur in graphene, carbon nanotubes or silicon and regard the 16-dimensional space with one electron per dot as a four-qubit logic space. In the spin-only case, it is well known that the exchange coupling between the dots combined with arbitrary single-qubit operations is sufficient for univers...

Quantum Dot Cluster State Computing with Encoded Qubits

Cluster state or one-way quantum computation [1] is a measurement based scheme for universal quantum computation formally equivalent to the traditional circuit method [2]. The basis of the scheme is the cluster state [3], a highly entangled state on which measurements alone can perform universal quantum computation. To create the cluster state one rotates all qubits in a lattice of at least two...