High-fidelity ion-trap quantum computing with hyperfine clock states Export

@article{citeulike:1937386, abstract = {We propose the implementation of a geometric-phase gate on magnetic-field-insensitive qubits with z-dependent forces for trapped ion quantum computing. The force is exerted by two laser beams in a Raman configuration. Qubit-state dependency is achieved by a small frequency detuning from the virtually excited state. Ion species with excited states of long radiative lifetimes are used to reduce the chance of a spontaneous photon emission to less than 10\−8\ \ per gate run. This eliminates the main source of gate infidelity in previous implementations. With this scheme it seems possible to reach the fault-tolerant threshold.}, author = {Aolita, L. and Kim, K. and Benhelm, J. and Roos, C. F. and H\"affner, H.}, citeulike-article-id = {1937386}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000076000004040303000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRA/v76/e040303}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevA.76.040303}, doi = {10.1103/PhysRevA.76.040303}, journal = {Physical Review A (Atomic, Molecular, and Optical Physics)}, keywords = {fidelity, ion-trap}, number = {4}, posted-at = {2007-11-19 10:50:40}, priority = {2}, publisher = {APS}, title = {High-fidelity ion-trap quantum computing with hyperfine clock states}, url = {http://dx.doi.org/10.1103/PhysRevA.76.040303}, volume = {76}, year = {2007} }

TY - JOUR ID - citeulike:1937386 L3 - citeulike-article-id:1937386 N2 - We propose the implementation of a geometric-phase gate on magnetic-field-insensitive qubits with z-dependent forces for trapped ion quantum computing. The force is exerted by two laser beams in a Raman configuration. Qubit-state dependency is achieved by a small frequency detuning from the virtually excited state. Ion species with excited states of long radiative lifetimes are used to reduce the chance of a spontaneous photon emission to less than 10−8  per gate run. This eliminates the main source of gate infidelity in previous implementations. With this scheme it seems possible to reach the fault-tolerant threshold. IS - 4 JF - Physical Review A (Atomic, Molecular, and Optical Physics) TI - High-fidelity ion-trap quantum computing with hyperfine clock states PB - APS VL - 76 KW - fidelity KW - ion-trap AU - Aolita, L AU - Kim, K AU - Benhelm, J AU - Roos, CF AU - H\"affner, H PY - 2007/// UR - http://dx.doi.org/10.1103/PhysRevA.76.040303 ER -