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Atomic entanglement purification using photonic Faraday rotation
[article]
2012
arXiv
pre-print
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We describe an entanglement purification protocol (EPP) for atomic entangled pair using photonic Faraday rotation. ...
As the photonic Faraday rotation works on the low-Q cavities, this EPP is useful in both quantum communication and computation. ...
In conclusion, we have presented an EPP for atomic entanglement with photonic Faraday rotation. ...
arXiv:1209.6530v1
fatcat:4sftjfo2lzbdtmbovtnixvdrti
Atomic and photonic entanglement concentration via photonic Faraday rotation
2012
Physical Review A. Atomic, Molecular, and Optical Physics
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We propose two alternative entanglement concentration protocols (ECPs) using the Faraday rotation of photonic polarization. ...
The distinct feature of our protocols is that we can concentrate both atomic and photonic entangled states via photonic Faraday rotation, and thus they may be universal and useful for entanglement concentration ...
We propose two alternative entanglement concentration protocols (ECPs) using the Faraday rotation of photonic polarization. ...
doi:10.1103/physreva.86.034305
fatcat:j3f5e32lubff5garhhe2wzsf2u
Entanglement swapping of atomic states through the photonic Faraday rotation
[article]
2010
arXiv
pre-print
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We propose an entanglement swapping of atomic states confined by cavities QED using a photonic Faraday rotation. ...
After interacting with an atom trapped inside the cavity the system evolves to an entangled atom-photon state. ...
swapping of atomic states confined in cavities QED using photonic Faraday rotation. ...
arXiv:1005.1189v1
fatcat:meh5mdpvufee7omubp5powx43m
Multipartite entanglement purification for three-level trapped atom systems
[article]
2012
arXiv
pre-print
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We describe an entanglement purification protocol (EPP) for multipartite three-level atomic entangled pair using photonic Faraday rotation. ...
This protocol resorts to the photonic Faraday rotation to realize the function of the controlled-Not (CNOT) gate. ...
In conclusion, we have presented an MEPP for purifying multipartite atomic entanglement using photonic Faraday rotation. ...
arXiv:1210.7077v1
fatcat:fgwl7edhurghnfa6lz72wlumve
Efficient entanglement purification for polarization logic Bell state with the photonic Faraday rotation
[article]
2016
arXiv
pre-print
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During the protocol, we only require to measure the atom states, and it is useful for improving the entanglement of photon systems in future large-scale quantum networks. ...
to the photon-atom interaction in low-quality (Q) cavity and atomic state measurement. ...
With the help of the photonic Faraday rotation effect and the atomic state and photon state measurement, they can finally distill new mixed photon state. ...
arXiv:1601.05980v1
fatcat:6x7ffqy37ndtxl52zzekvd4eja
Quantum repeaters free of polarization disturbance and phase noise
2009
Physical Review A. Atomic, Molecular, and Optical Physics
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2009 pre-print arXiv:0902.4498v1 fatcat:zbudmgcrurayfc5wp476bd5b3i
Through single-atom cavity-QED technology and linear optics, this scheme can be implemented easily. ...
Fortunately, two-photon interference type quantum repeaters can be immune to phase noise of the channel. ...
This heralded entanglement generation is also a built-in entanglement purification process [6] . ...
doi:10.1103/physreva.79.044302
fatcat:e25m4j5ggbc4dos36tos37xem4
Quantum interface between light and atomic ensembles
2010
Reviews of Modern Physics
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2009 pre-print arXiv:0807.3358v4 fatcat:lelf6zlhvvhe7eua5e42fys7uiOther Versions
light, quantum entanglement between atomic ensembles and light, and quantum teleportation with atomic ensembles. ...
We discuss various mechanisms used for the quantum interface, including quantum nondemolition or Faraday interaction, quantum measurement and feedback, Raman interaction and electromagnetically induced ...
purification and error correction . ...
doi:10.1103/revmodphys.82.1041
fatcat:zfm7hvcncrbinbs7eydlrocnbi
Concurrence Measurement for the Two-Qubit Optical and Atomic States
2015
Entropy
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Concurrence provides us an effective approach to quantify entanglement, which is quite important in quantum information processing applications. ...
Third, we introduce some protocols for measuring the concurrence of the atomic entanglement system. ...
F = φ − φ 0 is defined as the photonic Faraday rotation. ...
doi:10.3390/e17064293
fatcat:3bzdp6qkknaipassw7zqnnpkk4
Generation, characterization and use of atom-resonant indistinguishable photon pairs
[article]
2015
arXiv
pre-print
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We describe the generation of atom-resonant indistinguishable photon pairs using nonlinear optical techniques, their spectral purification using atomic filters, characterization using multi-photon interference ...
The emission from these frequency-degenerate modes is separated from other cavity emission using ultra-narrow atomic frequency filters, either a Faraday anomalous dispersion optical filter (FADOF) with ...
Aephraim Steinberg was essential to getting the photon pair research started. The contributions of Zehui Zhai, Yannick de Icaza Astiz and Gianvito Lucivero are also much appreciated. ...
arXiv:1502.07615v1
fatcat:vjx7e4oz5fcrlmxkfsgp2pekyu
Towards quantum networks of single spins: analysis of a quantum memory with an optical interface in diamond
2015
Faraday discussions
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Initial experiments on trapped atoms and ions as well as defects in diamond have demonstrated entanglement between two nodes over several meters. ...
Such memories allow for entanglement distillation, purification and quantum repeater protocols that extend the size, speed and distance of the network. ...
Loretz for useful discussions. ...
doi:10.1039/c5fd00113g
pmid:26411802
fatcat:x3mgzf63ffdknieobeb2jjymom
Fault-tolerant quantum repeaters with minimal physical resources and implementations based on single-photon emitters
2005
Physical Review A. Atomic, Molecular, and Optical Physics
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Furthermore, the coupled electron and nuclear spins can be used to efficiently implement entanglement swapping and purification. ...
discuss its implementation using realistic photon emitters and photonic channels. ...
Another physical implementation for quantum repeaters uses atomic ensembles as a long-lived memory for photons [15] . ...
doi:10.1103/physreva.72.052330
fatcat:j6rz7rtsnzhbbgesdfosvo5r5a
Towards Quantum Repeaters with Solid-State Qubits: Spin-Photon Entanglement Generation Using Self-assembled Quantum Dots
[chapter]
2015
Engineering the Atom-Photon Interaction
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2015 pre-print arXiv:1501.03535v1 fatcat:i7eql5w72jddhjgj27vbfgzp4y
entanglement between a quantum memory (electron spin qubit) and a flying qubit (polarization- or frequency-encoded photonic qubit). ...
We also place this experimental work in context by providing an overview of quantum repeaters, their potential uses, and the challenges in implementing them. ...
We would like to thank especially Yoshihisa Yamamoto (who supervised these works), Thaddeus Ladd, Christian Schneider and Cody Jones for numerous conversations about the place and use of quantum dots in ...
doi:10.1007/978-3-319-19231-4_14
fatcat:o6fouv6k2fau3kydmy7oat56fq
Entanglement concentration for two atomic ensembles using an effective atom-light beamsplitter
2011
Journal of Physics B: Atomic, Molecular and Optical Physics
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The entanglement concentration protocol itself uses the procrustean method, similar to that first devised for light by Browne et al [2003 Phys Rev A 67 062320] and includes photon counting after the interaction ...
We present a protocol for increasing the entanglement between two atomic ensembles based on applying an approximate atom-light beamsplitter transformation to both ensembles. ...
A double pass scheme [17] can be used for the generation of polarization squeezed light by optical Faraday rotation. ...
doi:10.1088/0953-4075/44/17/175506
fatcat:y53py34pmndzrkqrtadjfaapqy
Entanglement between remote continuous-variable quantum systems: Effects of transmission loss
2006
Physical Review A. Atomic, Molecular, and Optical Physics
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We study the effects of losses on the entanglement created between two separate atomic gases by optical probing and homodyne detection of the transmitted light. ...
In an asymmetric setup where light is only sent one way through the atomic samples, we find that the logarithmic negativity of entanglement attains a constant value − log 2 (N ) with N = 1/3 irrespectively ...
In theory [8] and experiment [2] , entanglement between two trapped atomic gases is generated when the atoms are probed by off-resonant light (effective Faraday rotation interaction), and the transmitted ...
doi:10.1103/physreva.74.012320
fatcat:jd2tlbseubbabexrwfvtivuwfa
Entanglement between remote continuous variable quantum systems: effects of transmission loss
[article]
2006
arXiv
pre-print
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We study the effects of losses on the entanglement created between two separate atomic gases by optical probing and homodyne detection of the transmitted light. ...
In an asymmetric setup where light is only sent one way through the atomic samples, we find that the logarithmic negativity of entanglement attains a constant value -_2(N) with N=1/3 irrespectively of ...
In theory [8] and experiment [2] , entanglement between two trapped atomic gases is generated when the atoms are probed by off-resonant light (effective Faraday rotation interaction), and the transmitted ...
arXiv:quant-ph/0603265v1
fatcat:juwgkbeagzccpk3khgnzolriza
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