Detecting ground state qubit self-excitations in circuit QED: slow quantum anti-Zeno effect

Details Detecting ground state qubit self-excitations in circuit QED: slow quantum anti-Zeno effect Detecting ground state qubit self-excitations in circuit QED: slow quantum anti-Zeno effect

2010-11-30

arxiv.org/abs/1011.6613v2

Phys. Rev. B 84, 024516 (2011)

Physics

Quantum Physics

6 pages, 6 figures. v2: extended published version

Scientific paper

10.1103/PhysRevB.84.024516

In this work we study an ultrastrong coupled qubit-cavity system subjected to slow repeated measurements. We demonstrate that even under a few imperfect measurements it is possible to detect transitions of the qubit from its free ground state to the excited state. The excitation probability grows exponentially fast in analogy with the quantum anti-Zeno effect. The dynamics and physics described in this paper is accessible to current superconducting circuit technology.

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