dorsal/arxiv
View SchemaA quantum computer using a trapped-ion spin molecule and microwave radiation
| Authors | D. Mc Hugh, J. Twamley |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0310015 |
| URL | https://arxiv.org/abs/quant-ph/0310015 |
| DOI | 10.1103/PhysRevA.71.012315 |
Abstract
We propose a new design for a quantum information processor where qubits are encoded into Hyperfine states of ions held in a linear array of individually tailored microtraps and sitting in a spatially varying magnetic field. The magnetic field gradient introduces spatially dependent qubit transition frequencies and a type of spin-spin interaction between qubits. Single and multi-qubit manipulation is achieved via resonant microwave pulses as in liquid-NMR quantum computation while the qubit readout and reset is achieved through trapped-ion fluorescence shelving techniques. By adjusting the microtrap configurations we can tailor, in hardware, the qubit resonance frequencies and coupling strengths. We show the system possesses a side-band transition structure which does not scale with the size of the processor allowing scalable frequency discrimination between qubits. By using large magnetic field gradients, one can readout and reset the qubits in the ion chain via frequency selective optical pulses avoiding the need for many tightly focused laser beams for spatial qubit addressing.
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"abstract": "We propose a new design for a quantum information processor where qubits are\nencoded into Hyperfine states of ions held in a linear array of individually\ntailored microtraps and sitting in a spatially varying magnetic field. The\nmagnetic field gradient introduces spatially dependent qubit transition\nfrequencies and a type of spin-spin interaction between qubits. Single and\nmulti-qubit manipulation is achieved via resonant microwave pulses as in\nliquid-NMR quantum computation while the qubit readout and reset is achieved\nthrough trapped-ion fluorescence shelving techniques. By adjusting the\nmicrotrap configurations we can tailor, in hardware, the qubit resonance\nfrequencies and coupling strengths. We show the system possesses a side-band\ntransition structure which does not scale with the size of the processor\nallowing scalable frequency discrimination between qubits. By using large\nmagnetic field gradients, one can readout and reset the qubits in the ion chain\nvia frequency selective optical pulses avoiding the need for many tightly\nfocused laser beams for spatial qubit addressing.",
"arxiv_id": "quant-ph/0310015",
"authors": [
"D. Mc Hugh",
"J. Twamley"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.012315",
"title": "A quantum computer using a trapped-ion spin molecule and microwave radiation",
"url": "https://arxiv.org/abs/quant-ph/0310015"
},
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