Düsseldorf 2007 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 57: Quanteninformation (Quantencomputer II)
Q 57.3: Talk
Thursday, March 22, 2007, 14:45–15:00, 5L
Experimental realization of quantum search algorithm using hyper-entanglement — •Kai Chen1, Cheming Li1, Qiang Zhang1, Alois Mair1, Yu-Ao Chen1, Alexander Goebel1, Shuai Chen1, Joerg Schmiedmayer1, and Jian-Wei Pan1,2 — 1Physikalisches Institut der Universitaet Heidelberg, Philosophenweg 12, Heidelberg 69120, Germany — 2Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
We present the first experimental demonstration of an one-way implementation of Grover search algorithm by exploiting optical hyper-entangled cluster states. This is realized by developing a bright two photon hyper-entangled source with both polarizing and spacial degrees of freedom, which achieves the fastest quantum search utilizing measurement-based quantum computation in currently available optical setups. The two qubit algorithm is succeeded within one single step, in wonderful agreement with theoretical predictions. This highlights ultra-fastness and simplicity of one-way quantum computing using optical hyper-entangled cluster states.