Switchable ultrastrong coupling in circuit QED.
نویسندگان
چکیده
We propose different designs of switchable coupling between a superconducting flux qubit and a microwave transmission line. They are based on two or more loops of Josephson junctions which are directly connected to a closed (cavity) or open transmission line. In both cases the circuit induces a coupling that can be modulated in strength, reaching the so-called ultrastrong coupling regime in which the coupling is comparable to the qubit and photon frequencies. Furthermore, we suggest a wide set of applications for the introduced architectures.
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عنوان ژورنال:
- Physical review letters
دوره 105 2 شماره
صفحات -
تاریخ انتشار 2010