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quant-ph2012★ 7 cited
Harmonic mixing in two coupled qubits: quantum synchronization via ac drives
S. E. Savel'ev, Z. Washington, A. M. Zagoskin +1
Simulating a system of two driven coupled qubits, we show that the time-averaged probability to find one driven qubit in its ground or excited state can be controlled by an ac driv…
quant-ph2012★ 15 cited
Two-qubit parametric amplifier: large amplification of weak signals
S. Savel'ev, A. M. Zagoskin, A. L. Rakhmanov +3
Using numerical simulations, we show that two coupled qubits can amplify a weak signal about hundredfold. This can be achieved if the two qubits are biased simultaneously by this w…