Cavity-QED-based quantum phase gate

被引：93

作者：

Zubairy, MS ^{[1
]}

Kim, M

Scully, MO

机构：

[1] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[2] Texas A&M Univ, Inst Quantum Studies, College Stn, TX 77843 USA

[3] Quaid I Azam Univ, Dept Elect, Islamabad, Pakistan

[4] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.68.033820

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe a quantum phase gate in which the two qubits are represented by the photons in the two modes of the cavity field. The gate is implemented by passing a three-level atom in a cascade configuration through the cavity. The upper levels of the atom are resonant with one of the cavity modes whereas the lower levels are appropriately detuned from the other mode of the cavity. A pi phase shift is introduced when there is one photon each in the two modes and the atom is initially in the ground state. We also discuss the one-bit unitary gate in such a system and discuss potential applications.

引用

页数：6

共 19 条

[1]

[Anonymous], 2009, Quantum computation and quantum information, DOI DOI 10.1119/1.1463744

[2] COMMUNICATION VIA ONE-PARTICLE AND 2-PARTICLE OPERATORS ON EINSTEIN-PODOLSKY-ROSEN STATES [J].