Quantum computation with superconducting rings

Superconducting rings with exactly $Φ_0/2$ magnetic flux threading are analogous of Ising spins having two degenerate states which can be used to store binary information. When brought close these rings interact by means of magnetic coupling. If the interactions are properly tailored, a system of such superconducting rings can accomplish static quantum logic in the sense that the states of the rings interpreted as Boolean variables satisfy the desired logic relations when and only when the whole system is in the ground state. Such static logic is essential to carry out the static quantum computation [1,2].Superconducting rings with exactly $Φ_0/2$ magnetic flux threading are analogous of Ising spins having two degenerate states which can be used to store binary information. When brought close these rings interact by means of magnetic coupling. If the interactions are properly tailored, a system of such superconducting rings can accomplish static quantum logic in the sense that the states of the rings interpreted as Boolean variables satisfy the desired logic relations when and only when the whole system is in the ground state. Such static logic is essential to carry out the static quantum computation [1,2].

arXiv:quant-ph/9702041Feb 20, 19972 citations

Superconducting quantum computation

Emily Pritchett

Aug 1, 20100 citations

Quantum computation with superconducting qubits

Abhinav Kandala

International Conference on Solid State Devices and Materials (SSDM)Sep 29, 20200 citations

Analog Computer Simulation of Weakly Connected Superconducting Rings

M. B. Simmonds, William H. Parker

A system comprising a weakly connected superconducting ring inductively coupled to a resonant L-C circuit has been studied using an analog computer. The weak link was characterized either by a current-phase relation of the form I = Ic sinφ or by ``supercurrent breakdown,'' and the results were compared. The effects of a normal resistance shunting the junction were investigated, as well as the effects of thermal current noise in the ring. Some criteria for achieving optimum coupling to the superconducting ring are discussed.A system comprising a weakly connected superconducting ring inductively coupled to a resonant L-C circuit has been studied using an analog computer. The weak link was characterized either by a current-phase relation of the form I = Ic sinφ or by ``supercurrent breakdown,'' and the results were compared. The effects of a normal resistance shunting the junction were investigated, as well as the effects of thermal current noise in the ring. Some criteria for achieving optimum coupling to the superconducting ring are discussed.

Journal of Applied PhysicsJan 1, 197146 citations

Superconducting circuits for quantum computation

Leszek Jaroszynski

PRZEGLĄD ELEKTROTECHNICZNYJan 1, 20090 citations

Superconducting rings with exactly

Φ_0/2

magnetic flux threading are analogous of Ising spins having two degenerate states which can be used to store binary information. When brought close these rings interact by means of magnetic coupling. If the interactions are properly tailored, a system of such superconducting rings can accomplish static quantum logic in the sense that the states of the rings interpreted as Boolean variables satisfy the desired logic relations when and only when the whole system is in the ground state. Such static logic is essential to carry out the static quantum computation [1,2].