Institute for Quantum information processing
- 1:
Research lines.- 1.1:
Theory of quantum information processing. - 1.2: Archiv.
- 1.2.1:
Solid state quantum computer. - 1.2.2: Electron quantum computing.
- 1.2.3: Micro ion traps for scalable QIPC.
- 1.2.1:
- 1.1:
- 2: Publications.
- 3: Öffentlichkeit.
- 4: Teaching.
- 5: Colloquia and seminars.
- 6: Members.
- 7: Open positions.
- 8: funding.
Single electron quantum computing
Single Electrons in planar Penning traps
We investigate mesoscopic and microscopic planar Penning traps at temperaturs of 10-100mK to confine and cool electrons and uses them for QIPC [1,2]. The Spin of the electrons in the magnetic fieldof the Penning trap allows encoding the qubit and can be coherently manipulated with microwave pulses. The electron spins interact, for two qubit gates, either directly or via an electric coupling of the central electrode of the Penning trap. The foto shows the mesoscopic planar trap with concentric electrodes which is placed inside the 3He/4He-delution refrigerator. We have successfully trapped a cold cloud of electrons with storage times of several hours [3].
[1] S. Stahl et al, Eur. Phys. J. D 32, 139 (2005)
[2] I. Marzoli, et al, arXiv:0810.4408
[3] Bushev et al, The European Physical Journal D, in print | 
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The research is funded be the european comission within QUELE.
We plan to integrate superconducting elements in the trap design and to investigate the interaction of ingle electrons with these devices. Here, we collaborate with R. Kleiner und D. Kölle (Uni Tübingen) within the SFB-TR21.