Open AccessFast CNOT gate between two spatially separated atoms via shortcuts to adiabatic passage
Author(s) -
Yan Liang,
Chong Song,
Xin Ji,
Shou Zhang
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.023798
Subject(s) - controlled not gate , physics , quantum gate , quantum computer , qubit , quantum mechanics , quantum circuit , quantum decoherence , adiabatic process , quantum error correction , quantum , topology (electrical circuits) , mathematics , combinatorics
Quantum logic gate is indispensable to quantum computation. One of the important qubit operations is the quantum controlled-not (CNOT) gate that performs a NOT operation on a target qubit depending on the state of the control qubit. In this paper we present a scheme to realize the quantum CNOT gate between two spatially separated atoms via shortcuts to adiabatic passage. The influence of various decoherence processes on the fidelity is discussed. The strict numerical simulation results show that the fidelity for the CNOT gate is relatively high.