Rinner, S. and Walther, H. and Werner, E. (2004) How to measure the decoherence of a micromaser field under well controlled conditions. PHYSICAL REVIEW LETTERS, 93 (16): 160407. ISSN 0031-9007,
Full text not available from this repository.Abstract
We discuss a possible realization of a quantum register with controllable decoherence in terms of \0> and \1> photon number states of a micromaser field. It is shown how to create in the Jaynes-Cummings model a superposition state of \0> and \1> photon number states inside a closed micromaser cavity. The loss of phase coherence between these two states can subsequently be measured by a second probe atom monitoring the decoherence of the field. A technique is proposed for forming the superposition of number states \0> and \1> using the time structure of the Rabi oscillation. The proposed method avoids problems with stray fields at the cavity holes, which disturb the coherence of the atomic superposition, and offers a way to study how the coupling strength to the environment influences the decoherence rate, displaying the robustness of physical qubits and the fidelity of quantum computations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTUM; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Jun 2021 04:53 |
| Last Modified: | 28 Jun 2021 04:53 |
| URI: | https://pred.uni-regensburg.de/id/eprint/37082 |
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