Strong tunable coupling between a superconducting charge and phase qubit
arXiv:0712.3970 · doi:10.1103/PhysRevLett.100.187003
Abstract
We have realized a tunable coupling over a large frequency range between an asymmetric Cooper pair transistor (charge qubit) and a dc SQUID (phase qubit). Our circuit enables the independent manipulation of the quantum states of each qubit as well as their entanglement. The measurements of the charge qubit's quantum states is performed by resonant read-out via the measurement of the quantum states of the SQUID. The measured coupling strength is in agreement with an analytic theory including a capacitive and a tunable Josephson coupling between the two qubits.
5 pages
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- RFSQUID-Mediated Coherent Tunable Coupling Between a Superconducting Phase Qubit and a Lumped Element Resonator
- Entanglement degradation in the solid state: interplay of adiabatic and quantum noise
- Experimental demonstration of Aharonov-Casher interference in a Josephson junction circuit
- Multiphoton transitions in Josephson-junction qubits (Review Article)
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- Decoherence times of universal two-qubit gates in the presence of broad-band noise
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- Quantum simulation of clustered photosynthetic light harvesting in a superconducting quantum circuit
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- Decay of nonlocality due to adiabatic and quantum noise in the solid state
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