Volume 87, Number 5, September 2009
|Number of page(s)||5|
|Published online||24 September 2009|
Quantum gate operations using atomic qubits through cavity input-output process
School of Physics and Optoelectronic Technology, Dalian University of Technology - Dalian 116024, China
2 Department of Physics, Fuzhou University - Fuzhou 350002, China
Accepted: 26 August 2009
We propose two deterministic schemes to implement quantum swap gate and Fredkin gate encoded by atomic qubits through the input-output process of the cavity. We show that these schemes can be extended to realize multi-qubit gate operations. By numerical calculation, the fidelity and photon loss probability for implementing quantum swap gate between photon and atom are also discussed.
PACS: 03.67.Hk – Quantum communication / 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.)
© EPLA, 2009
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