



@article {1174,
	title = {Photon-Photon Interactions via Rydberg Blockade},
	journal = {Physical Review Letters},
	volume = {107},
	year = {2011},
	month = {2011/9/22},
	abstract = {  We develop the theory of light propagation under the conditions of
electromagnetically induced transparency (EIT) in systems involving strongly
interacting Rydberg states. Taking into account the quantum nature and the
spatial propagation of light, we analyze interactions involving few-photon
pulses. We demonstrate that this system can be used for the generation of
nonclassical states of light including trains of single photons with an avoided
volume between them, for implementing photon-photon quantum gates, as well as
for studying many-body phenomena with strongly correlated photons.
},
	doi = {10.1103/PhysRevLett.107.133602},
	url = {http://arxiv.org/abs/1103.3700v1},
	author = {Alexey V. Gorshkov and Johannes Otterbach and Michael Fleischhauer and Thomas Pohl and Mikhail D. Lukin}
}
@article {1170,
	title = {Photonic Phase Gate via an Exchange of Fermionic Spin Waves in a Spin  Chain
},
	journal = {Physical Review Letters},
	volume = {105},
	year = {2010},
	month = {2010/8/5},
	abstract = {  We propose a new protocol for implementing the two-qubit photonic phase gate.
In our approach, the pi phase is acquired by mapping two single photons into
atomic excitations with fermionic character and exchanging their positions. The
fermionic excitations are realized as spin waves in a spin chain, while photon
storage techniques provide the interface between the photons and the spin
waves. Possible imperfections and experimental systems suitable for
implementing the gate are discussed.
},
	doi = {10.1103/PhysRevLett.105.060502},
	url = {http://arxiv.org/abs/1001.0968v3},
	author = {Alexey V. Gorshkov and Johannes Otterbach and Eugene Demler and Michael Fleischhauer and Mikhail D. Lukin}
}
@article {1180,
	title = {Universal Approach to Optimal Photon Storage in Atomic Media},
	journal = {Physical Review Letters},
	volume = {98},
	year = {2007},
	month = {2007/3/19},
	abstract = {  We present a universal physical picture for describing storage and retrieval
of photon wave packets in a Lambda-type atomic medium. This physical picture
encompasses a variety of different approaches to pulse storage ranging from
adiabatic reduction of the photon group velocity and pulse-propagation control
via off-resonant Raman fields to photon-echo based techniques. Furthermore, we
derive an optimal control strategy for storage and retrieval of a photon wave
packet of any given shape. All these approaches, when optimized, yield
identical maximum efficiencies, which only depend on the optical depth of the
medium.
},
	doi = {10.1103/PhysRevLett.98.123601},
	url = {http://arxiv.org/abs/quant-ph/0604037v3},
	author = {Alexey V. Gorshkov and Axel Andre and Michael Fleischhauer and Anders S. Sorensen and Mikhail D. Lukin}
}
