Flux qubit on mesoscopic nonsuperconducting ring
arXiv:cond-mat/0609134 · doi:10.1103/PhysRevB.74.125426
Abstract
The possibility of making a flux qubit on nonsuperconducting mesoscopic ballistic quasi 1D ring is discussed. We showed that such ring can be effectively reduced to a two-state system with two external control parameters. The two states carry opposite persistent currents and are coupled by tunneling which leads to a quantum superposition of states. The qubit states can be manipulated by resonant microwave pulses. The flux state of the sample can be measured by a SQUID magnetometer. Two or more qubits can be coupled by the flux the circulating currents generate. The problem of decoherence is also discussed.
Phys. Rev. B. (accepted)
References in corpus (2)
Cited by in corpus (5)
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- Magnetic flux in mesoscopic rings: Quantum Smoluchowski regime