Journal
PHYSICAL REVIEW A
Volume 92, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.92.063830
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Funding
- RIKEN iTHES Project
- MURI Center for Dynamic Magneto-Optics via the AFOSR Grant [FA9550-14-1-0040]
- MPACT program of JST
- MPNS COST Action MP1403 Nanoscale Quantum Optics
- JSPS Postdoctoral Fellowship for Overseas Researchers
- Grants-in-Aid for Scientific Research [15F15750, 15H02118] Funding Source: KAKEN
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When an atom is strongly coupled to a cavity, the two systems can exchange a single photon through a coherent Rabi oscillation. This process enables precise quantum-state engineering and manipulation of atoms and photons in a cavity, which play a central role in quantum information and measurement. Recently, a new regime of cavity QED was reached experimentally where the strength of the interaction between light and artificial atoms (qubits) becomes comparable to the atomic transition frequency or the resonance frequency of the cavity mode. Here we show that this regime can strongly modify the concept of vacuum Rabi oscillations, enabling multiphoton exchanges between the qubit and the resonator. We find that experimental state-of-the-art circuit-QED systems can undergo two- and three-photon vacuum Rabi oscillations. These anomalous Rabi oscillations can be exploited for the realization of efficient Fock-state sources of light and complex entangled states of qubits.
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