dorsal/arxiv
View SchemaNon-Markovian Quantum Error Deterrence by Dynamical Decoupling in a General Environment
| Authors | K. Shiokawa, B. L. Hu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0507177 |
| URL | https://arxiv.org/abs/quant-ph/0507177 |
Abstract
A dynamical decoupling scheme for the deterrence of errors in the non-Markovian (usually corresponding to low temperature, short time, and strong coupling) regimes suitable for qubits constructed out of a multilevel structure is studied. We use the effective spin-boson model (ESBM) introduced recently [K. Shiokawa and B. L. Hu, Phys. Rev. A70, 062106 (2004)] as a low temperature limit of the quantum Brownian oscillator model, where one can obtain exact solutions for a general environment with colored noises. In our decoupling scheme a train of pairs of strong pulses are used to evolve the interaction Hamiltonian instantaneously. Using this scheme we show that the dynamical decoupling method can suppress $1/f$ noise with slower and hence more accessible pulses than previously studied, but it still fails to decouple super-Ohmic types of environments.
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"abstract": "A dynamical decoupling scheme for the deterrence of errors in the\nnon-Markovian (usually corresponding to low temperature, short time, and strong\ncoupling) regimes suitable for qubits constructed out of a multilevel structure\nis studied. We use the effective spin-boson model (ESBM) introduced recently\n[K. Shiokawa and B. L. Hu, Phys. Rev. A70, 062106 (2004)] as a low temperature\nlimit of the quantum Brownian oscillator model, where one can obtain exact\nsolutions for a general environment with colored noises. In our decoupling\nscheme a train of pairs of strong pulses are used to evolve the interaction\nHamiltonian instantaneously. Using this scheme we show that the dynamical\ndecoupling method can suppress $1/f$ noise with slower and hence more\naccessible pulses than previously studied, but it still fails to decouple\nsuper-Ohmic types of environments.",
"arxiv_id": "quant-ph/0507177",
"authors": [
"K. Shiokawa",
"B. L. Hu"
],
"categories": [
"quant-ph"
],
"title": "Non-Markovian Quantum Error Deterrence by Dynamical Decoupling in a General Environment",
"url": "https://arxiv.org/abs/quant-ph/0507177"
},
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