The coherence of qubits based on single Ca$^+$ ions

by: F Schmidt-Kaler, S Gulde, M Riebe, T Deuschle, A Kreuter, G Lancaster, C Becher, J Eschner, H Haeffner, R Blatt

Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 36, No. 3. (2003), pp. 623-636.

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摘要

Two-level ionic systems, where quantum information is encoded in long-lived states (quantum bits, qubits), are discussed extensively for quantum information processing. We present a collection of measurements which characterize the stability of a qubit based on the S$_1/2$ – D$_5/2$ transition of single $^40$ Ca $^+$ ions in a linear Paul trap. We find coherence times of &simeq; 1 ms, discuss the main technical limitations and outline possible improvements.

@article{fsk-decoherence, abstract = {Two-level ionic systems, where quantum information is encoded in long-lived states (quantum bits, qubits), are discussed extensively for quantum information processing. We present a collection of measurements which characterize the stability of a qubit based on the S\$\_1/2\$ – D\$\_5/2\$ transition of single \$^40\$ Ca \$^\+\$ ions in a linear Paul trap. We find coherence times of \&simeq; 1 ms, discuss the main technical limitations and outline possible improvements.}, author = {Schmidt-Kaler, F. and Gulde, S. and Riebe, M. and Deuschle, T. and Kreuter, A. and Lancaster, G. and Becher, C. and Eschner, J. and Haeffner, H. and Blatt, R. }, citeulike-article-id = {1355041}, doi = {http://dx.doi.org/10.1088/0953-4075/36/3/319}, journal = {Journal of Physics B: Atomic, Molecular and Optical Physics}, keywords = {blatt, ion}, number = {3}, pages = {623--636}, posted-at = {2007-06-01 12:07:53}, priority = {2}, title = {The coherence of qubits based on single Ca\$^+\$ ions}, url = {http://dx.doi.org/10.1088/0953-4075/36/3/319}, volume = {36}, year = {2003} }

RIS record

TY - JOUR ID - fsk-decoherence L3 - citeulike-article-id:1355041 N2 - Two-level ionic systems, where quantum information is encoded in long-lived states (quantum bits, qubits), are discussed extensively for quantum information processing. We present a collection of measurements which characterize the stability of a qubit based on the S$_1/2$ – D$_5/2$ transition of single $^40$ Ca $^+$ ions in a linear Paul trap. We find coherence times of &simeq; 1 ms, discuss the main technical limitations and outline possible improvements. IS - 3 JF - Journal of Physics B: Atomic, Molecular and Optical Physics EP - 636 TI - The coherence of qubits based on single Ca$^+$ ions VL - 36 SP - 623 KW - blatt KW - ion AU - Schmidt-Kaler, F AU - Gulde, S AU - Riebe, M AU - Deuschle, T AU - Kreuter, A AU - Lancaster, G AU - Becher, C AU - Eschner, J AU - Haeffner, H AU - Blatt, R PY - 2003/// UR - http://dx.doi.org/10.1088/0953-4075/36/3/319 ER -

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