dorsal/arxiv
View SchemaOptimal strategy for a single-qubit gate and trade-off between opposite types of decoherence
| Authors | Robert Alicki, Michal Horodecki, Pawel Horodecki, Ryszard Horodecki, Lucjan Jacak, Pawel Machnikowski |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0302058 |
| URL | https://arxiv.org/abs/quant-ph/0302058 |
| DOI | 10.1103/PhysRevA.70.010501 |
| Journal | Phys. Rev. A 70, 010501(R) (2004) |
Abstract
We study reliable quantum information processing (QIP) under two different types of environment. First type is Markovian exponential decay, and the appropriate elementary strategy of protection of qubit is to apply fast gates. The second one is strongly non-Markovian and occurs solely during operations on the qubit. The best strategy is then to work with slow gates. If the two types are both present, one has to optimize the speed of gate. We show that such a trade-off is present for a single-qubit operation in a semiconductor quantum dot implementation of QIP, where recombination of exciton (qubit) is Markovian, while phonon dressing gives rise to the non-Markovian contribution.
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"abstract": "We study reliable quantum information processing (QIP) under two different\ntypes of environment. First type is Markovian exponential decay, and the\nappropriate elementary strategy of protection of qubit is to apply fast gates.\nThe second one is strongly non-Markovian and occurs solely during operations on\nthe qubit. The best strategy is then to work with slow gates. If the two types\nare both present, one has to optimize the speed of gate. We show that such a\ntrade-off is present for a single-qubit operation in a semiconductor quantum\ndot implementation of QIP, where recombination of exciton (qubit) is Markovian,\nwhile phonon dressing gives rise to the non-Markovian contribution.",
"arxiv_id": "quant-ph/0302058",
"authors": [
"Robert Alicki",
"Michal Horodecki",
"Pawel Horodecki",
"Ryszard Horodecki",
"Lucjan Jacak",
"Pawel Machnikowski"
],
"categories": [
"quant-ph",
"cond-mat"
],
"doi": "10.1103/PhysRevA.70.010501",
"journal_ref": "Phys. Rev. A 70, 010501(R) (2004)",
"title": "Optimal strategy for a single-qubit gate and trade-off between opposite types of decoherence",
"url": "https://arxiv.org/abs/quant-ph/0302058"
},
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