



01512nas a2200157   4500008004100000245008700041210006900128260001500197300001100212490000700223520099300230100002501223700001401248700001901262856007301281       2016                        eng d00aSerialized Quantum Error Correction Protocol for High-Bandwidth Quantum  Repeaters0 aSerialized Quantum Error Correction Protocol for HighBandwidth Q  c2016/09/02  a0930080 v183 a<p>Advances in single photon creation, transmission, and detection suggest that sending quantum information over optical fibers may have losses low enough to be correctable using a quantum error correcting code. Such error-corrected communication is equivalent to a novel quantum repeater scheme, but crucial questions regarding implementation and system requirements remain open. Here we show that long range entangled bit generation with rates approaching $10^8$ ebits/s may be possible using a completely serialized protocol, in which photons are generated, entangled, and error corrected via sequential, one-way interactions with a minimal number of matter qubits. Provided loss and error rates of the required elements are below the threshold for quantum error correction, this scheme demonstrates improved performance over transmission of single photons. We find improvement in ebit rates at large distances using this serial protocol and various quantum error correcting codes.</p>1 aGlaudell, Andrew, N.1 aWaks, Edo1 aTaylor, J., M.  uhttp://iopscience.iop.org/article/10.1088/1367-2630/18/9/093008/meta01474nas a2200133   4500008004100000245009500041210006900136260001500205490000700220520103800227100001401265700002401279856003701303       2009                        eng d00aProtocol for Hybrid Entanglement Between a Trapped Atom and a  Semiconductor Quantum Dot
0 aProtocol for Hybrid Entanglement Between a Trapped Atom and a Se  c2009/12/300 v803 a  We propose a quantum optical interface between an atomic and solid state
system. We show that quantum states in a single trapped atom can be entangled
with the states of a semiconductor quantum dot through their common interaction
with a classical laser field. The interference and detection of the resulting
scattered photons can then herald the entanglement of the disparate atomic and
solid-state quantum bits. We develop a protocol that can succeed despite a
significant mismatch in the radiative characteristics of the two matter-based
qubits. We study in detail a particular case of this interface applied to a
single trapped \Yb ion and a cavity-coupled InGaAs semiconductor quantum dot.
Entanglement fidelity and success rates are found to be robust to a broad range
of experimental nonideal effects such as dispersion mismatch, atom recoil, and
multi-photon scattering. We conclude that it should be possible to produce
highly entangled states of these complementary qubit systems under realistic
experimental conditions.
1 aWaks, Edo1 aMonroe, Christopher  uhttp://arxiv.org/abs/0907.0444v1