Quantum teleportation and entanglement swapping of matter qubits with coherent multiphoton states

Abstract

Protocols for probabilistic entanglement-assisted quantum teleportation and for entanglement swapping of material qubits are presented. They are based on a protocol for postselective Bell-state projection which is capable of projecting two material qubits onto a Bell state with the help of ancillary coherent multiphoton states and postselection by balanced homodyne photodetection. Provided this photonic postselection is successful we explore the theoretical possibilities of realizing unit fidelity quantum teleportation and entanglement swapping with $25\%$ success probability. This photon-assisted Bell projection is generated by coupling almost resonantly the two material qubits to single modes of the radiation field in two separate cavities in a Ramsey-type interaction sequence and by measuring the emerged field states in a balanced homodyne detection scenario. As these quantum protocols require basic tools of quantum state engineering of coherent multiphoton states and balanced homodyne photodetection they may offer interesting perspectives in particular for current quantum optical applications in quantum information processing.

16 pages, 9 figures

References in corpus (10)

• The Quantum Internet
• Experimental quantum teleportation
• Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
• Quantum teleportation using active feed-forward between two Canary Islands
• Quantum teleportation and entanglement distribution over 100-kilometre free-space channels
• Entangling Independent Photons by Time Measurement
• Efficient Teleportation between Remote Single-Atom Quantum Memories
• Heralded entanglement of two ions in an optical cavity
• High-fidelity entanglement purification using chains of atoms and optical cavities
• Entanglement of superconducting charge qubits by homodyne measurement

Cited by in corpus (11)

• Effective discrimination of chiral molecules in a cavity
• Entanglement transfer in a noisy cavity network with parity-deformed radiation fields
• Atomic Bell measurement via two-photon interactions
• Measurement-induced chaos and quantum state discrimination in an iterated Tavis-Cummings scheme
• Unambiguous atomic Bell measurement assisted by multiphoton states
• Multiphoton-state-assisted entanglement purification of material qubits
• Probabilistic resumable quantum teleportation in high dimensions
• Hybrid quantum repeater based on resonant qubit-field interactions
• Entangling operations in nonlinear two-atom Tavis-Cummings models
• Significance of Fidelity Deviation in Continuous Variable Teleportation
• Local-available quantum correlation swapping in one-parameter X states