dorsal/arxiv
View SchemaDecoherence and relaxation of a qubit coupled to an Ohmic bath directly and via an intermediate harmonic oscillator
| Authors | Xian-Ting Liang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0703233 |
| URL | https://arxiv.org/abs/quant-ph/0703233 |
| DOI | 10.1016/j.cplett.2007.10.074 |
| Journal | Chem. Phys. Lett. 449 (2007) 296-303 |
Abstract
Using the numerical path integral method we investigate the decoherence and relaxation of qubits coupled to an Ohmic bath directly and via an intermediate harmonic oscillator (IHO). Here, we suppose the oscillation frequencies of the bath modes are higher than the IHO's. When we choose suitable parameters the qubits in the two models may have almost same decoherence and relaxation times. However, the decoherence and relaxation times of the qubit in the qubit-IHO-bath model can be modulated through changing the coupling coefficients of the qubit-IHO and IHO-bath and the oscillation frequency of the IHO.
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"abstract": "Using the numerical path integral method we investigate the decoherence and\nrelaxation of qubits coupled to an Ohmic bath directly and via an intermediate\nharmonic oscillator (IHO). Here, we suppose the oscillation frequencies of the\nbath modes are higher than the IHO\u0027s. When we choose suitable parameters the\nqubits in the two models may have almost same decoherence and relaxation times.\nHowever, the decoherence and relaxation times of the qubit in the\nqubit-IHO-bath model can be modulated through changing the coupling\ncoefficients of the qubit-IHO and IHO-bath and the oscillation frequency of the\nIHO.",
"arxiv_id": "quant-ph/0703233",
"authors": [
"Xian-Ting Liang"
],
"categories": [
"quant-ph"
],
"doi": "10.1016/j.cplett.2007.10.074",
"journal_ref": "Chem. Phys. Lett. 449 (2007) 296-303",
"title": "Decoherence and relaxation of a qubit coupled to an Ohmic bath directly and via an intermediate harmonic oscillator",
"url": "https://arxiv.org/abs/quant-ph/0703233"
},
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