Unknown

Dataset Information

0

Photonic ququart logic assisted by the cavity-QED system.


ABSTRACT: Universal quantum logic gates are important elements for a quantum computer. In contrast to previous constructions of qubit systems, we investigate the possibility of ququart systems (four-dimensional states) dependent on two DOFs of photon systems. We propose some useful one-parameter four-dimensional quantum transformations for the construction of universal ququart logic gates. The interface between the spin of a photon and an electron spin confined in a quantum dot embedded in a microcavity is applied to build universal ququart logic gates on the photon system with two freedoms. Our elementary controlled-ququart gates cost no more than 8 CNOT gates in a qubit system, which is far less than the 104 CNOT gates required for a general four-qubit logic gate. The ququart logic is also used to generate useful hyperentanglements and hyperentanglement-assisted quantum error-correcting code, which may be available in modern physical technology.

SUBMITTER: Luo MX 

PROVIDER: S-EPMC4536487 | biostudies-other | 2015

REPOSITORIES: biostudies-other

Similar Datasets

| S-EPMC8924263 | biostudies-literature
| S-EPMC4853727 | biostudies-literature
| S-EPMC5509682 | biostudies-other
| S-EPMC3144677 | biostudies-literature
| S-EPMC4753464 | biostudies-other
| S-EPMC8626434 | biostudies-literature
| S-EPMC6610622 | biostudies-literature
| S-EPMC4913889 | biostudies-literature
| S-EPMC4518300 | biostudies-literature
| S-EPMC7195421 | biostudies-literature