Physics – Condensed Matter – Superconductivity
Scientific paper
2009-12-17
Phys. Rev. Lett. 105, 023601 (2010)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevLett.105.023601
Superconducting quantum circuits possess the ingredients for quantum information processing and for developing on-chip microwave quantum optics. From the initial manipulation of few-level superconducting systems (qubits) to their strong coupling to microwave resonators, the time has come to consider the generation and characterization of propagating quantum microwaves. In this paper, we design a key ingredient that will prove essential in the general frame: a swtichable coupling between qubit(s) and transmission line(s) that can work in the ultrastrong coupling regime, where the coupling strength approaches the qubit transition frequency. We propose several setups where two or more loops of Josephson junctions are directly connected to a closed (cavity) or open transmission line. We demonstrate that the circuit induces a coupling that can be modulated in strength and type. Given recent studies showing the accessibility to the ultrastrong regime, we expect our ideas to have an immediate impact in ongoing experiments.
Forn-Díaz Pol
Garcia-Ripoll Juan Jose
Peropadre Borja
Solano Enrique
No associations
LandOfFree
Switchable ultrastrong coupling in circuit QED does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Switchable ultrastrong coupling in circuit QED, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switchable ultrastrong coupling in circuit QED will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-686038