TY  - JOUR
A1  - Negretti, Antonio
A1  - Calarco, T.
A1  - Cirone, M. A.
A1  - Recati, A.
T1  - Performance of quantum phase gates with cold trapped atoms
N2  - We examine the performance of a quantum phase gate implemented with cold neutral atoms in microtraps, when anharmonic traps are employed and the effects of finite temperature are also taken into account. Both the anharmonicity and the temperature are found to pose limitations to the performance of the quantum gate. We present a quantitative analysis of the problem and show that the phase gate has a high quality performance for the experimental values that are presently or in the near future achievable in the laboratory
Y1  - 2005
ER  - 
TY  - JOUR
A1  - Cirone, M. A.
A1  - Negretti, Antonio
A1  - Calarco, T.
A1  - Krüger, P.
A1  - Schmiedmayer, Jörg
T1  - A simple quantum gate with atom chips
N2  - We present a simple scheme for implementing an atomic phase gate using two degrees of freedom for each atom and discuss its realization with cold rubidium atoms on atom chips. We investigate the performance of this collisional phase gate and show that gate operations with high fidelity can be realized in magnetic traps that are currently available on atom chips
Y1  - 2005
ER  -