TY  - JOUR
AU  - Hinarejos, M.
AU  - Bañuls, M. C.
AU  - Perez, A.
PY  - 2013
DA  - 2013//
TI  - A Study of Wigner Functions for Discrete-Time Quantum Walks
T2  - J. Comput. Theor. Nanosci.
JO  - Journal of Computational and Theoretical Nanoscience
SP  - 1626
EP  - 1633
VL  - 10
IS  - 7
PB  - Amer Scientific Publishers
KW  - Quantum Walk
KW  - Wigner Function
KW  - Negativity
AB  - We perform a systematic study of the discrete time Quantum Walk on one dimension using Wigner functions, which are generalized to include the chirality (or coin) degree of freedom. In particular, we analyze the evolution of the negative volume in phase space, as a function of time, for different initial states. This negativity can be used to quantify the degree of departure of the system from a classical state. We also relate this quantity to the entanglement between the coin and walker subspaces.
SN  - 1546-1955
UR  - http://arxiv.org/abs/1204.1050
UR  - https://doi.org/10.1166/jctn.2013.3101
DO  - 10.1166/jctn.2013.3101
LA  - English
N1  - WOS:000322605800014
ID  - Hinarejos_etal2013
ER  -