|
| related topics |
| {time, decoherence, evolution} |
| {temperature, thermal, energy} |
| {qubit, qubits, gate} |
| {entanglement, phys, rev} |
| {state, states, coherent} |
| {operator, operators, space} |
| {cos, sin, state} |
| {let, theorem, proof} |
| {energy, state, states} |
|
Short-time decoherence of Josephson charge qubits
Xian-Ting Liang
abstract: In this paper we investigate the short-time decoherence of single Josephson
charge qubit (JCQ). The measure of decoherence is chosen as the maximum norm of
the deviation density operator. It is shown that when the temperature low
enough (for example T=30mK), within the elementary gate-operation time
tau{g}~12.7ps, the decoherence is smaller than 0.0001 at present setup of JCQ.
The Josephson charge qubit is suitable to take the blocks for quantum
computations according to the DiVincenzo low decoherence criterion.
- oai_identifier:
- oai:arXiv.org:quant-ph/0405188
- categories:
- quant-ph
- comments:
- 5pages 2figures
- doi:
- 10.1016/j.physb.2005.02.016
- arxiv_id:
- quant-ph/0405188
- journal_ref:
- Physica B 362 (2005) 243-248
- created:
- 2004-05-31
- updated:
- 2004-08-25
Full article ▸
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