|
| related topics |
| {time, decoherence, evolution} |
| {equation, function, exp} |
| {qubit, qubits, gate} |
| {temperature, thermal, energy} |
| {phase, path, phys} |
| {level, atom, field} |
| {entanglement, phys, rev} |
| {force, casimir, field} |
| {cos, sin, state} |
| {state, phys, rev} |
|
Decoherence of Josephson charge qubit
Xian-Ting Liang
abstract: In this paper we investigate decoherence time of superconducting Josephson
charge qubit (JCQ). Two kinds of methods, iterative tensor multiplication (ITM)
method derived from the qusiadiabatic propagator path integral (QUAPI) and
Bloch equations method are used. Using the non-Markovian ITM method we correct
the decoherence time predicted by Bloch equations method. By comparing the
exact theoretical result with the experimental data we suggest that the Ohmic
noise plays the central role to the decoherence of the JCQ.
- oai_identifier:
- oai:arXiv.org:quant-ph/0506044
- categories:
- quant-ph
- comments:
- 5 pages, 2 figures
- doi:
- 10.1016/j.physc.2006.03.035
- arxiv_id:
- quant-ph/0506044
- journal_ref:
- Physica C 442 (2006) 79-83
- created:
- 2005-06-06
- updated:
- 2006-04-24
Full article ▸
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