On-chip past-future quantum correlations

Physics – Quantum Physics

Scientific paper

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5 pages, 2 figures

Scientific paper

We propose a realistic circuit QED experiment to test the extraction of past-future vacuum quantum correlations to a pair of superconducting qubits. The qubit P interacts with the quantum field along an open transmission line for an interval T_on and then, after a time-lapse T_off, the qubit F starts interacting for a time T_on in a symmetric fashion. After that, past-future quantum correlations of the vacuum will have transferred to the qubits, even if the qubits do not coexist at the same time. We show that this experiment can be realized with current technology and discuss its utility as a possible implementation of a quantum memory.

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