Unambiguous atomic Bell measurement assisted by multiphoton states

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 postselec...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2016-05, Vol.122 (5), p.1-11, Article 117
Main Authors: Torres, Juan Mauricio, Bernád, József Zsolt, Alber, Gernot
Format: Article
Language:English
Subjects:
Bells
Coherence
Electromagnetic fields
Engineering
Holes
Lasers
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Proposals
Quantum Optics
Quantum Repeaters: From Components to Strategies
Qubits (quantum computing)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-016-6382-3