Transport of quantum states and separation of ions in a dual RF ion trap
Quantum Information & Computation
Quantum computer architecture for fast entropy extraction
Quantum Information & Computation
How to build a 300 bit, 1 Giga-operation quantum computer
Quantum Information & Computation
Scalable, efficient ion-photon coupling with phase fresnel lenses for large-scale quantum computing
Quantum Information & Computation
On the transport of atomic ions in linear and multidimensional ion trap arrays
Quantum Information & Computation
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We study the problem of designing electrode structures that allow pairs of ions to bebrought together and separated rapidly in an array of linear Paul traps. We show thatit is desirable for the electrode structure to produce a d.c. octupole moment with ana.c. radial quadrupole. For the case where electrical breakdown limits the voltagesthat can be applied, we show that the octupole is more demanding than the quadrupolewhen the characteristic distance scale of the structure is larger than 1 to 10 microns (fortypical materials). We present a variety of approaches and optimizations of structuresconsisting of one to three layers of electrodes. The three-layer structures allow the fastestoperation at given distance ρ from the trap centres to the nearest electrode surface, butwhen the total thickness w of the structure is constrained, leading to w