Unambiguous atomic Bell measurement assisted by multiphoton states
arXiv:1506.04076 · doi:10.1007/s00340-016-6382-3
Abstract
We propose and theoretically investigate an unambiguous Bell measurement of atomic qubits assisted by multiphoton states. The atoms interact resonantly with the electromagnetic field inside two spatially separated optical cavities in a Ramsey-type interaction sequence. The qubit states are postselected by measuring the photonic states inside the resonators. We show that if one is able to project the photonic field onto two coherent states on opposite sites of phase space, an unambiguous Bell measurement can be implemented. Thus our proposal may provide a core element for future components of quantum information technology such as a quantum repeater based on coherent multiphoton states, atomic qubits and matter-field interaction.
11 pages, 6 figures
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- Optimized single-shot laser ablation of concave mirror templates on optical fibers
- Hybrid quantum repeater based on resonant qubit-field interactions
- Entangling operations in nonlinear two-atom Tavis-Cummings models
- Perfect revivals of Rabi oscillations and hybrid Bell states in a trapped ion