•Objective:
Experimental realization of the scheme of Duan, Lukin, Cirac, and Zoller [DLCZ, Nature 414, 413 (2201)] for the implementation of scalable quantum networks, including for entanglement based quantum cryptography and teleportation
Experimental realization of the scheme of Duan, Lukin, Cirac, and Zoller [DLCZ, Nature 414, 413 (2201)] for the implementation of scalable quantum networks, including for entanglement based quantum cryptography and teleportation
•Investigation
of the potential of quantum measurement combined with conditional
quantum
evolution to accomplish objectives that otherwise
require much more complex (and still unattainable) protocols such as
entanglement
purification
•Exploration of the collective degrees of freedom of an
atomic
ensemble for diverse tasks in the field of quantum information,
including
for quantum memory and as a versatile source of single
photons and entangled fields
Approach:
Approach:
•Demonstrate
a fully controllable single photon source (including the temporal shape
of
the photon wave packets)
•Achieve
entanglement between two spatially separated atomic ensembles
(including
the characterization of decoherence for the quantum memory)
•Utilize
this entanglement to achieve a demonstration of entanglement-based
quantum
cryptography
•Employ
entanglement between atomic ensembles as a resource for investigations
of
quantum teleportation of the quantum states of matter.
|
Our new paper is now
available online : "Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks" C.W. Chou, J. Laurat, H. Deng, K.S. Choi, H.
de
Riedmatten, D. Felinto, H.J. Kimble, Science, Published online on April
5,
2007;
10.1126/science.1140300 [abstract pdf (without AAAS membership)] Caltech Press Release |
 Picture of the two first nodes of our elementary quantum network. Photo by Nara Cavalcanti |