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Heralded state preparation in a superconducting qubit
Heralded state preparation superconducting qubit quantum non-demolition
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2012/2/27
We demonstrate high-fidelity, quantum non-demolition, single shot readout of a superconducting flux qubit in which the pointer state histograms can be resolved to below one part in 1000. In the weak e...
Semiconductor quantum ring as a solid-state spin qubit
Semiconductor quantum ring solid-state spin qubit
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2010/11/19
The implementation of a spin qubit in a quantum ring occupied by one or a few electrons is proposed. Quantum bit involves the Zeeman sublevels of the highest occupied orbital. Such a qubit can be init...
A superconducting qubit with Purcell protection and tunable coupling
superconducting qubit Purcell protection tunable coupling
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2010/10/27
We present a superconducting qubit for the circuit quantum electrodynamics architecture that has a tunable coupling strength g. We show that this coupling strength can be tuned from zero to values tha...