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http://hdl.handle.net/2289/3286| Title: | Phase-diffusion pattern in quantum-nondemolition systems |
| Authors: | Banerjee, Subhashish Ghosh, Joyee Ghosh, R. |
| Issue Date: | 2007 |
| Publisher: | American Physical Society |
| Citation: | Physical Review A, 2007, Vol.75, p062106 |
| Abstract: | We quantitatively analyze the dynamics of the quantum phase distribution associated with the reduced density matrix of a system, as the system evolves under the influence of its environment with an energy-preserving quantum nondemolition (QND) type of coupling. We take the system to be either an oscillator (harmonic or anharmonic) or a two-level atom (or equivalently, a spin-1/2 system), and model the environment as a bath of harmonic oscillators, initially in a general squeezed thermal state. The impact of the different environmental parameters is explicitly brought out as the system starts out in various initial states. The results are applicable to a variety of physical systems now studied experimentally with QND measurements. |
| Description: | Open Access. |
| URI: | http://hdl.handle.net/2289/3286 |
| ISSN: | 1050-2947 1094-1622 (online) |
| Alternative Location: | http://link.aps.org/abstract/PRA/v75/e062106 http://dx.doi.org/10.1103/PhysRevA.75.062106 |
| Copyright: | 2007 American Physical Society |
| Appears in Collections: | Research Papers (TP) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2007 PR-A V75 p062106.pdf Restricted Access | Open Access | 238.59 kB | Adobe PDF | View/Open Request a copy |
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