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Autor:
Kreuter, A., Becher, C., Lancaster, G. P. T., Mundt, A. B., Russo, C., Häffner, H., Roos, C., Hänsel, W., Schmidt-Kaler, F., Blatt, R., Safronova, M. S.
We report measurements of the lifetimes of the 3d $^2$D$_{5/2}$ and 3d $^2$D$_{3/2}$ metastable states of a single laser-cooled $^{40}$Ca$^+$ ion in a linear Paul trap. We introduce a new measurement technique based on high-efficiency quantum state d
Externí odkaz:
http://arxiv.org/abs/physics/0409038
Autor:
Schmidt-Kaler, F., Häffner, H., Riebe, M., Lancaster, G. P. T., Deuschle, T., Becher, C., Hänsel, W., Eschner, J., Roos, C. F., Blatt, R.
Publikováno v:
Appl. Phys. B: Lasers and Optics 77, 789 - 796 (2003)
We report the realization of an elementary quantum processor based on a linear crystal of trapped ions. Each ion serves as a quantum bit (qubit) to store the quantum information in long lived electronic states. We present the realization of single-qu
Externí odkaz:
http://arxiv.org/abs/quant-ph/0312162
Autor:
Schmidt-Kaler, F., Haeffner, H., Gulde, S., Riebe, M., Lancaster, G., Eschner, J., Becher, C., Blatt, R.
A single 40Ca+ ion is trapped and laser cooled to its motional ground state. Laser radiation which couples off-resonantly to a motional sideband of the ion's S1/2 to D5/2 transition causes a phase shift proportional to the ion's motional quantum stat
Externí odkaz:
http://arxiv.org/abs/quant-ph/0307211
Autor:
Roos, C. F., Lancaster, G. P. T., Riebe, M., Haeffner, H., Haensel, W., Gulde, S., Becher, C., Eschner, J., Schmidt-Kaler, F., Blatt, R.
We report on tomographic means to study the stability of a qubit register based on a string of trapped ions. In our experiment, two ions are held in a linear Paul trap and are entangled deterministically by laser pulses that couple their electronic a
Externí odkaz:
http://arxiv.org/abs/quant-ph/0307210
Autor:
Haeffner, H., Gulde, S., Riebe, M., Lancaster, G., Becher, C., Eschner, J., Schmidt-Kaler, F., Blatt, R.
Publikováno v:
Phys.Rev.Lett.90:143602,2003
Using optical Ramsey interferometry, we precisely measure the laser-induced AC-stark shift on the $S_{1/2}$ -- $D_{5/2}$ "quantum bit" transition near 729 nm in a single trapped $^{40}$Ca$^+$ ion. We cancel this shift using an additional laser field.
Externí odkaz:
http://arxiv.org/abs/physics/0212040
Autor:
Schmidt-Kaler, F., Gulde, S., Riebe, M., Deuschle, T., Kreuter, A., Lancaster, G., Becher, C., Eschner, J., Haeffner, H., Blatt, R.
Two-level ionic systems, where quantum information is encoded in long lived states (qubits), are discussed extensively for quantum information processing. We present a collection of measurements which characterize the stability of a qubit based on th
Externí odkaz:
http://arxiv.org/abs/quant-ph/0211059
Publikováno v:
Cell Stress & Chaperones, 2004 Oct 01. 9(3), 276-280.
Externí odkaz:
https://www.jstor.org/stable/1602015
Autor:
Gulde, S., Häffner, H., Riebe, M., Lancaster, G., Becher, C., Eschner, J., Schmidt-Kaler, F., Chuang, I. L., Blatt, R.
Publikováno v:
Philosophical Transactions: Mathematical, Physical and Engineering Sciences, 2003 Jul . 361(1808), 1363-1374.
Externí odkaz:
https://www.jstor.org/stable/3559244