Issue |
EPL
Volume 96, Number 4, November 2011
|
|
---|---|---|
Article Number | 44001 | |
Number of page(s) | 6 | |
Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
DOI | https://doi.org/10.1209/0295-5075/96/44001 | |
Published online | 08 November 2011 |
Stochastic Schrödinger equation for a non-Markovian dissipative qubit-qutrit system
1
Center for Controlled Quantum Systems, and the Department of Physics and Engineering Physics Stevens Institute of Technology - Hoboken, NJ 07030, USA
2
Department of Physics, Shanghai University - Shanghai 200444, China
a
Jun.Jing@stevens.edu
b
Ting.Yu@stevens.edu
Received:
7
June
2011
Accepted:
23
September
2011
We investigate the non-Markovian quantum dynamics of a hybrid open system consisting of one qubit and one qutrit by employing a stochastic Schrödinger equation to generate diffusive quantum trajectories. We have established an exact quantum state diffusion (QSD) equation for the dissipative qubit-qutrit system coupled to a bosonic heat bath at zero temperature. As an important application, the non-Markovian QSD equation is employed to simulate the entanglement decay and generation measured by negativity. Finally, some steady-state properties of the hybrid system are also discussed.
PACS: 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps / 03.65.Yz – Decoherence; open systems; quantum statistical methods / 05.30.-d – Quantum statistical mechanics
© EPLA, 2011
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