Frankfurt 2006 – scientific programme

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SYQT: Quantum Computing with Trapped Electrons

SYQT 1: Quantum Computing with Trapped Electrons

SYQT 1.1: Invited Talk

Monday, March 13, 2006, 10:40–11:10, HV

Towards a quantum computer with trapped electrons — •Irene Marzoli — Università di Camerino, Dipartimento di Fisica, Camerino (Italy)

We present a theoretical proposal to implement a quantum processor based on trapped electrons, stored in planar Penning traps. Qubits are encoded in the particle spin, that precesses around the strong homogeneous magnetic field of the trap. The typical precession frequency lies in the microwave range. The use of long-wavelength radiation for single qubit operations requires an additional magnetic field gradient to selectively manipulate the qubits via frequency addressing. The same magnetic gradient, mediated by the Coulomb interaction, realizes an effective coupling between the spin qubits of different particles. The resulting system can be regarded as an artificial molecule, suitable for nuclear magnetic resonance (NMR) quantum computation. Therefore, conditional dynamics is performed by means of well established techniques already successfully demonstrated with NMR quantum computing. The system lends itself to scalability, since the same substrate can accomodate an arbitrary number of traps. Moreover, the spin-spin coupling strength is tunable and under experimental control. To predict the performances of such a quantum processor, we take into account a realistic setting within the reach of present technology.