Journal
PHYSICAL REVIEW A
Volume 79, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.032303
Keywords
Faraday effect; information theory; quantum computing; quantum electrodynamics; quantum entanglement; quantum optics
Categories
Funding
- NUS Research [R-144-000-189-305]
- NNSF of China [10604025, 10774163]
- Fundamental Research Fund for Physics and Mathematics of Lanzhou University [Lzu05-02]
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Both cavity quantum electrodynamics and photons are promising candidates for quantum information processing. We consider a combination of both candidates with a single photon going through spatially separate cavities to entangle the atomic qubits, based on the input-output process of the cavities. We present a general expression for the input-output process regarding the low-Q cavity confining a single atom, which works in a wide range of parameters. Focusing on low-Q cavity case, we propose some schemes for quantum information processing with Faraday rotation using single photons, which is much different from the high-Q cavity and strong-coupling cases.
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