BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3571
DTSTART:20150109T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T153959Z
LAST-MODIFIED:20150106T174028Z
LOCATION:5310 Chamberlin
SUMMARY:Modular Quantum Information Processing\, Atomic Physics Semina
 r\, David Hucul \, University of Maryland
DESCRIPTION:Trapped ions are qubit standards in quantum information sc
 ience because of their long coherence times and high fidelity entangli
 ng gates controlled with external fields. Scaling to very large dimens
 ions may require the use of a modular architecture where trapped ions 
 in separate ion trap modules are entangled using a photonic interface 
 while ions in the same module are entangled using a phonon bus. We rep
 ort the successful combination of these types of entanglement within a
 nd between two modules. We use fast optics to generate heralded remote
  entanglement between modules at rates exceeding 4 per second\, faster
  than the experimentally measured decoherence rate of the remote entan
 gled state. The resource scaling in such a modular architecture is sup
 er-exponential in the ratio of the mean remote entanglement time to th
 e entangled qubit coherence time\, and trapped ions are the only exper
 imental system to date where this ratio is small and the overhead is n
 ot forbidding.<br><br>
\n<br><br>
\nModular quantum networks may invol
 ve the use of different types of qubits to create a large scale networ
 k. Heralded entanglement between qubits using photon interference is a
  powerful tool to create entanglement within heterogeneous quantum sys
 tems. We experimentally demonstrate the entanglement of non-identical 
 qubits by interfering distinguishable photons emitted from distinguish
 able trapped ions without significant loss of remote entanglement rate
  or fidelity. 
URL:https://www.physics.wisc.edu/events/?id=3571
END:VEVENT
END:VCALENDAR