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Remote creation of hybrid entanglement between particle-like and wave-like optical qubits
- Source :
- Nature Photonics
- Publication Year :
- 2014
-
Abstract
- The wave-particle duality of light has led to two different encodings for optical quantum information processing. Several approaches have emerged based either on particle-like discrete-variable states, e.g. finite-dimensional quantum systems, or on wave-like continuous-variable states, e.g. infinite-dimensional systems. Here, we demonstrate the first measurement-induced generation of entanglement between optical qubits of these different types, located at distant places and connected by a lossy channel. Such hybrid entanglement, which is a key resource for a variety of recently proposed schemes, including quantum cryptography and computing, enables to convert information from one Hilbert space to the other via teleportation and therefore connect remote quantum processors based upon different encodings. Beyond its fundamental significance for the exploration of entanglement and its possible instantiations, our optical circuit opens the promises for heterogeneous network implementations, where discrete and continuous-variable operations and techniques can be efficiently combined.
- Subjects :
- Physics
Quantum Physics
FOS: Physical sciences
Quantum entanglement
Squashed entanglement
Teleportation
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]
Qubit
Quantum mechanics
Quantum information
W state
Quantum Physics (quant-ph)
Entanglement witness
[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
No-communication theorem
Subjects
Details
- Language :
- English
- ISSN :
- 17494885
- Database :
- OpenAIRE
- Journal :
- Nature Photonics
- Accession number :
- edsair.doi.dedup.....dd80ae90841b512bd8559b08f13997e3
- Full Text :
- https://doi.org/10.1038/nphoton.2014.137