For a dimerized XY chain used as a quantum battery, the asymptotic stored energy rises, then slowly increases, then falls as charging parameters cross the two quantum critical lines.
Globally driven superconducting quantum computing architecture
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We propose a platform for implementing a universal, globally driven quantum computer based on a 2D ladder hosting three different species of superconducting qubits. In stark contrast with the existing literature, our scheme exploits the always-on longitudinal ZZ coupling. The latter, combined with specific driving frequencies, enables the reach of a blockade regime, which plays a pivotal role in the computing scheme.
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Charging a Dimerized Quantum XY Chain
For a dimerized XY chain used as a quantum battery, the asymptotic stored energy rises, then slowly increases, then falls as charging parameters cross the two quantum critical lines.