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Two-qubit conditional phase gate in laser-excited semiconductor quantum dots using the quantum Zeno effect.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Huang, Yanping Moore, Michael Glen Piermarocchi, Carlo |
| Copyright Year | 2009 |
| Abstract | We propose a scheme for a two-qubit conditional quantum Zeno phase gate for semiconductor quantum dots. The proposed system consists of two charged dots and one ancillary neutral dot driven by a laser pulse tuned to the exciton resonance. The primary decoherence mechanism is phonon-assisted exciton relaxation, which can be viewed as continuous monitoring by the environment. Because of the Zeno effect, a strong possibility of emission is sufficient to strongly modify the coherent dynamics, with negligible probability of actual emission. We solve analytically the master equation and simulate the dynamics of the system using a realistic set of parameters. In contrast to standard schemes, larger phonon relaxation rates increase the fidelity of the operations. |
| Starting Page | 037401 |
| Ending Page | 037401 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1103/PhysRevLett.103.037401 |
| PubMed reference number | 19659314 |
| Journal | Medline |
| Volume Number | 103 |
| Issue Number | 3 |
| Alternate Webpage(s) | http://www.pa.msu.edu/~mmoore/XuHuaMoo09.pdf |
| Alternate Webpage(s) | http://www.pa.msu.edu/people/mmoore/XuHuaMoo09.pdf |
| Journal | Physical review letters |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
